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Ember Data, API rev 12, build: 5fd6d65 (2013-03-28 01:13:50 +0100),
Raw
ember-data.js
// Last commit: 5fd6d65 (2013-03-28 01:13:50 +0100)
(function() {
window.DS = Ember.Namespace.create({
// this one goes past 11
CURRENT_API_REVISION: 12
});
})();
(function() {
var DeferredMixin = Ember.DeferredMixin, // ember-runtime/mixins/deferred
Evented = Ember.Evented, // ember-runtime/mixins/evented
run = Ember.run, // ember-metal/run-loop
get = Ember.get; // ember-metal/accessors
var LoadPromise = Ember.Mixin.create(Evented, DeferredMixin, {
init: function() {
this._super.apply(this, arguments);
this.one('didLoad', function() {
run(this, 'resolve', this);
});
if (get(this, 'isLoaded')) {
this.trigger('didLoad');
}
}
});
DS.LoadPromise = LoadPromise;
})();
(function() {
var get = Ember.get, set = Ember.set;
var LoadPromise = DS.LoadPromise; // system/mixins/load_promise
/**
A record array is an array that contains records of a certain type. The record
array materializes records as needed when they are retrieved for the first
time. You should not create record arrays yourself. Instead, an instance of
DS.RecordArray or its subclasses will be returned by your application's store
in response to queries.
*/
DS.RecordArray = Ember.ArrayProxy.extend(Ember.Evented, LoadPromise, {
/**
The model type contained by this record array.
@type DS.Model
*/
type: null,
// The array of client ids backing the record array. When a
// record is requested from the record array, the record
// for the client id at the same index is materialized, if
// necessary, by the store.
content: null,
isLoaded: false,
isUpdating: false,
// The store that created this record array.
store: null,
objectAtContent: function(index) {
var content = get(this, 'content'),
reference = content.objectAt(index),
store = get(this, 'store');
if (reference) {
return store.recordForReference(reference);
}
},
materializedObjectAt: function(index) {
var reference = get(this, 'content').objectAt(index);
if (!reference) { return; }
if (get(this, 'store').recordIsMaterialized(reference)) {
return this.objectAt(index);
}
},
update: function() {
if (get(this, 'isUpdating')) { return; }
var store = get(this, 'store'),
type = get(this, 'type');
store.fetchAll(type, this);
},
addReference: function(reference) {
get(this, 'content').addObject(reference);
},
removeReference: function(reference) {
get(this, 'content').removeObject(reference);
}
});
})();
(function() {
var get = Ember.get;
DS.FilteredRecordArray = DS.RecordArray.extend({
filterFunction: null,
isLoaded: true,
replace: function() {
var type = get(this, 'type').toString();
throw new Error("The result of a client-side filter (on " + type + ") is immutable.");
},
updateFilter: Ember.observer(function() {
var store = get(this, 'store');
store.updateRecordArrayFilter(this, get(this, 'type'), get(this, 'filterFunction'));
}, 'filterFunction')
});
})();
(function() {
var get = Ember.get, set = Ember.set;
DS.AdapterPopulatedRecordArray = DS.RecordArray.extend({
query: null,
replace: function() {
var type = get(this, 'type').toString();
throw new Error("The result of a server query (on " + type + ") is immutable.");
},
load: function(references) {
var store = get(this, 'store'), type = get(this, 'type');
this.beginPropertyChanges();
set(this, 'content', Ember.A(references));
set(this, 'isLoaded', true);
this.endPropertyChanges();
var self = this;
// TODO: does triggering didLoad event should be the last action of the runLoop?
Ember.run.once(function() {
self.trigger('didLoad');
});
}
});
})();
(function() {
var get = Ember.get, set = Ember.set;
/**
A ManyArray is a RecordArray that represents the contents of a has-many
relationship.
The ManyArray is instantiated lazily the first time the relationship is
requested.
### Inverses
Often, the relationships in Ember Data applications will have
an inverse. For example, imagine the following models are
defined:
App.Post = DS.Model.extend({
comments: DS.hasMany('App.Comment')
});
App.Comment = DS.Model.extend({
post: DS.belongsTo('App.Post')
});
If you created a new instance of `App.Post` and added
a `App.Comment` record to its `comments` has-many
relationship, you would expect the comment's `post`
property to be set to the post that contained
the has-many.
We call the record to which a relationship belongs the
relationship's _owner_.
*/
DS.ManyArray = DS.RecordArray.extend({
init: function() {
this._super.apply(this, arguments);
this._changesToSync = Ember.OrderedSet.create();
},
/**
@private
The record to which this relationship belongs.
@property {DS.Model}
*/
owner: null,
// LOADING STATE
isLoaded: false,
loadingRecordsCount: function(count) {
this.loadingRecordsCount = count;
},
loadedRecord: function() {
this.loadingRecordsCount--;
if (this.loadingRecordsCount === 0) {
set(this, 'isLoaded', true);
this.trigger('didLoad');
}
},
fetch: function() {
var references = get(this, 'content'),
store = get(this, 'store'),
type = get(this, 'type'),
owner = get(this, 'owner');
store.fetchUnloadedReferences(type, references, owner);
},
// Overrides Ember.Array's replace method to implement
replaceContent: function(index, removed, added) {
// Map the array of record objects into an array of client ids.
added = added.map(function(record) {
Ember.assert("You can only add records of " + (get(this, 'type') && get(this, 'type').toString()) + " to this relationship.", !get(this, 'type') || (get(this, 'type') === record.constructor));
return get(record, '_reference');
}, this);
this._super(index, removed, added);
},
arrangedContentDidChange: function() {
this.fetch();
},
arrayContentWillChange: function(index, removed, added) {
var owner = get(this, 'owner'),
name = get(this, 'name');
if (!owner._suspendedRelationships) {
// This code is the first half of code that continues inside
// of arrayContentDidChange. It gets or creates a change from
// the child object, adds the current owner as the old
// parent if this is the first time the object was removed
// from a ManyArray, and sets `newParent` to null.
//
// Later, if the object is added to another ManyArray,
// the `arrayContentDidChange` will set `newParent` on
// the change.
for (var i=index; i<index+removed; i++) {
var reference = get(this, 'content').objectAt(i);
var change = DS.RelationshipChange.createChange(owner.get('_reference'), reference, get(this, 'store'), {
parentType: owner.constructor,
changeType: "remove",
kind: "hasMany",
key: name
});
this._changesToSync.add(change);
}
}
return this._super.apply(this, arguments);
},
arrayContentDidChange: function(index, removed, added) {
this._super.apply(this, arguments);
var owner = get(this, 'owner'),
name = get(this, 'name'),
store = get(this, 'store');
if (!owner._suspendedRelationships) {
// This code is the second half of code that started in
// `arrayContentWillChange`. It gets or creates a change
// from the child object, and adds the current owner as
// the new parent.
for (var i=index; i<index+added; i++) {
var reference = get(this, 'content').objectAt(i);
var change = DS.RelationshipChange.createChange(owner.get('_reference'), reference, store, {
parentType: owner.constructor,
changeType: "add",
kind:"hasMany",
key: name
});
change.hasManyName = name;
this._changesToSync.add(change);
}
// We wait until the array has finished being
// mutated before syncing the OneToManyChanges created
// in arrayContentWillChange, so that the array
// membership test in the sync() logic operates
// on the final results.
this._changesToSync.forEach(function(change) {
change.sync();
});
DS.OneToManyChange.ensureSameTransaction(this._changesToSync, store);
this._changesToSync.clear();
}
},
// Create a child record within the owner
createRecord: function(hash, transaction) {
var owner = get(this, 'owner'),
store = get(owner, 'store'),
type = get(this, 'type'),
record;
transaction = transaction || get(owner, 'transaction');
record = store.createRecord.call(store, type, hash, transaction);
this.pushObject(record);
return record;
}
});
})();
(function() {
})();
(function() {
var get = Ember.get, set = Ember.set, fmt = Ember.String.fmt,
removeObject = Ember.EnumerableUtils.removeObject, forEach = Ember.EnumerableUtils.forEach;
/**
A transaction allows you to collect multiple records into a unit of work
that can be committed or rolled back as a group.
For example, if a record has local modifications that have not yet
been saved, calling `commit()` on its transaction will cause those
modifications to be sent to the adapter to be saved. Calling
`rollback()` on its transaction would cause all of the modifications to
be discarded and the record to return to the last known state before
changes were made.
If a newly created record's transaction is rolled back, it will
immediately transition to the deleted state.
If you do not explicitly create a transaction, a record is assigned to
an implicit transaction called the default transaction. In these cases,
you can treat your application's instance of `DS.Store` as a transaction
and call the `commit()` and `rollback()` methods on the store itself.
Once a record has been successfully committed or rolled back, it will
be moved back to the implicit transaction. Because it will now be in
a clean state, it can be moved to a new transaction if you wish.
### Creating a Transaction
To create a new transaction, call the `transaction()` method of your
application's `DS.Store` instance:
var transaction = App.store.transaction();
This will return a new instance of `DS.Transaction` with no records
yet assigned to it.
### Adding Existing Records
Add records to a transaction using the `add()` method:
record = App.store.find(App.Person, 1);
transaction.add(record);
Note that only records whose `isDirty` flag is `false` may be added
to a transaction. Once modifications to a record have been made
(its `isDirty` flag is `true`), it is not longer able to be added to
a transaction.
### Creating New Records
Because newly created records are dirty from the time they are created,
and because dirty records can not be added to a transaction, you must
use the `createRecord()` method to assign new records to a transaction.
For example, instead of this:
var transaction = store.transaction();
var person = App.Person.createRecord({ name: "Steve" });
// won't work because person is dirty
transaction.add(person);
Call `createRecord()` on the transaction directly:
var transaction = store.transaction();
transaction.createRecord(App.Person, { name: "Steve" });
### Asynchronous Commits
Typically, all of the records in a transaction will be committed
together. However, new records that have a dependency on other new
records need to wait for their parent record to be saved and assigned an
ID. In that case, the child record will continue to live in the
transaction until its parent is saved, at which time the transaction will
attempt to commit again.
For this reason, you should not re-use transactions once you have committed
them. Always make a new transaction and move the desired records to it before
calling commit.
*/
var arrayDefault = function() { return []; };
DS.Transaction = Ember.Object.extend({
/**
@private
Creates the bucket data structure used to segregate records by
type.
*/
init: function() {
set(this, 'buckets', {
clean: Ember.OrderedSet.create(),
created: Ember.OrderedSet.create(),
updated: Ember.OrderedSet.create(),
deleted: Ember.OrderedSet.create(),
inflight: Ember.OrderedSet.create()
});
set(this, 'relationships', Ember.OrderedSet.create());
},
/**
Creates a new record of the given type and assigns it to the transaction
on which the method was called.
This is useful as only clean records can be added to a transaction and
new records created using other methods immediately become dirty.
@param {DS.Model} type the model type to create
@param {Object} hash the data hash to assign the new record
*/
createRecord: function(type, hash) {
var store = get(this, 'store');
return store.createRecord(type, hash, this);
},
isEqualOrDefault: function(other) {
if (this === other || other === get(this, 'store.defaultTransaction')) {
return true;
}
},
isDefault: Ember.computed(function() {
return this === get(this, 'store.defaultTransaction');
}),
/**
Adds an existing record to this transaction. Only records without
modficiations (i.e., records whose `isDirty` property is `false`)
can be added to a transaction.
@param {DS.Model} record the record to add to the transaction
*/
add: function(record) {
Ember.assert("You must pass a record into transaction.add()", record instanceof DS.Model);
var recordTransaction = get(record, 'transaction'),
defaultTransaction = get(this, 'store.defaultTransaction');
// Make `add` idempotent
if (recordTransaction === this) { return; }
// XXX it should be possible to move a dirty transaction from the default transaction
// we could probably make this work if someone has a valid use case. Do you?
Ember.assert("Once a record has changed, you cannot move it into a different transaction", !get(record, 'isDirty'));
Ember.assert("Models cannot belong to more than one transaction at a time.", recordTransaction === defaultTransaction);
this.adoptRecord(record);
},
relationshipBecameDirty: function(relationship) {
get(this, 'relationships').add(relationship);
},
relationshipBecameClean: function(relationship) {
get(this, 'relationships').remove(relationship);
},
/**
Commits the transaction, which causes all of the modified records that
belong to the transaction to be sent to the adapter to be saved.
Once you call `commit()` on a transaction, you should not re-use it.
When a record is saved, it will be removed from this transaction and
moved back to the store's default transaction.
*/
commit: function() {
var store = get(this, 'store');
var adapter = get(store, '_adapter');
var defaultTransaction = get(store, 'defaultTransaction');
var iterate = function(records) {
var set = records.copy();
set.forEach(function (record) {
record.send('willCommit');
});
return set;
};
var relationships = get(this, 'relationships');
var commitDetails = {
created: iterate(this.bucketForType('created')),
updated: iterate(this.bucketForType('updated')),
deleted: iterate(this.bucketForType('deleted')),
relationships: relationships
};
if (this === defaultTransaction) {
set(store, 'defaultTransaction', store.transaction());
}
this.removeCleanRecords();
if (!commitDetails.created.isEmpty() || !commitDetails.updated.isEmpty() || !commitDetails.deleted.isEmpty() || !relationships.isEmpty()) {
if (adapter && adapter.commit) { adapter.commit(store, commitDetails); }
else { throw fmt("Adapter is either null or does not implement `commit` method", this); }
}
// Once we've committed the transaction, there is no need to
// keep the OneToManyChanges around. Destroy them so they
// can be garbage collected.
relationships.forEach(function(relationship) {
relationship.destroy();
});
},
/**
Rolling back a transaction resets the records that belong to
that transaction.
Updated records have their properties reset to the last known
value from the persistence layer. Deleted records are reverted
to a clean, non-deleted state. Newly created records immediately
become deleted, and are not sent to the adapter to be persisted.
After the transaction is rolled back, any records that belong
to it will return to the store's default transaction, and the
current transaction should not be used again.
*/
rollback: function() {
// Loop through all of the records in each of the dirty states
// and initiate a rollback on them. As a side effect of telling
// the record to roll back, it should also move itself out of
// the dirty bucket and into the clean bucket.
['created', 'updated', 'deleted', 'inflight'].forEach(function(bucketType) {
var records = this.bucketForType(bucketType);
forEach(records, function(record) {
record.send('rollback');
});
records.clear();
}, this);
// Now that all records in the transaction are guaranteed to be
// clean, migrate them all to the store's default transaction.
this.removeCleanRecords();
},
/**
@private
Removes a record from this transaction and back to the store's
default transaction.
Note: This method is private for now, but should probably be exposed
in the future once we have stricter error checking (for example, in the
case of the record being dirty).
@param {DS.Model} record
*/
remove: function(record) {
var defaultTransaction = get(this, 'store.defaultTransaction');
defaultTransaction.adoptRecord(record);
},
/**
@private
Removes all of the records in the transaction's clean bucket.
*/
removeCleanRecords: function() {
var clean = this.bucketForType('clean');
clean.forEach(function(record) {
this.remove(record);
}, this);
clean.clear();
},
/**
@private
Returns the bucket for the given bucket type. For example, you might call
`this.bucketForType('updated')` to get the `Ember.Map` that contains all
of the records that have changes pending.
@param {String} bucketType the type of bucket
@returns Ember.Map
*/
bucketForType: function(bucketType) {
var buckets = get(this, 'buckets');
return get(buckets, bucketType);
},
/**
@private
This method moves a record into a different transaction without the normal
checks that ensure that the user is not doing something weird, like moving
a dirty record into a new transaction.
It is designed for internal use, such as when we are moving a clean record
into a new transaction when the transaction is committed.
This method must not be called unless the record is clean.
@param {DS.Model} record
*/
adoptRecord: function(record) {
var oldTransaction = get(record, 'transaction');
if (oldTransaction) {
oldTransaction.removeFromBucket('clean', record);
}
this.addToBucket('clean', record);
set(record, 'transaction', this);
},
/**
@private
Adds a record to the named bucket.
@param {String} bucketType one of `clean`, `created`, `updated`, or `deleted`
*/
addToBucket: function(bucketType, record) {
this.bucketForType(bucketType).add(record);
},
/**
@private
Removes a record from the named bucket.
@param {String} bucketType one of `clean`, `created`, `updated`, or `deleted`
*/
removeFromBucket: function(bucketType, record) {
this.bucketForType(bucketType).remove(record);
},
/**
@private
Called by a record's state manager to indicate that the record has entered
a dirty state. The record will be moved from the `clean` bucket and into
the appropriate dirty bucket.
@param {String} bucketType one of `created`, `updated`, or `deleted`
*/
recordBecameDirty: function(bucketType, record) {
this.removeFromBucket('clean', record);
this.addToBucket(bucketType, record);
},
/**
@private
Called by a record's state manager to indicate that the record has entered
inflight state. The record will be moved from its current dirty bucket and into
the `inflight` bucket.
@param {String} bucketType one of `created`, `updated`, or `deleted`
*/
recordBecameInFlight: function(kind, record) {
this.removeFromBucket(kind, record);
this.addToBucket('inflight', record);
},
recordIsMoving: function(kind, record) {
this.removeFromBucket(kind, record);
this.addToBucket('clean', record);
},
/**
@private
Called by a record's state manager to indicate that the record has entered
a clean state. The record will be moved from its current dirty or inflight bucket and into
the `clean` bucket.
@param {String} bucketType one of `created`, `updated`, or `deleted`
*/
recordBecameClean: function(kind, record) {
this.removeFromBucket(kind, record);
this.remove(record);
}
});
})();
(function() {
var classify = Ember.String.classify, get = Ember.get;
/**
@private
The Mappable mixin is designed for classes that would like to
behave as a map for configuration purposes.
For example, the DS.Adapter class can behave like a map, with
more semantic API, via the `map` API:
DS.Adapter.map('App.Person', { firstName: { key: 'FIRST' } });
Class configuration via a map-like API has a few common requirements
that differentiate it from the standard Ember.Map implementation.
First, values often are provided as strings that should be normalized
into classes the first time the configuration options are used.
Second, the values configured on parent classes should also be taken
into account.
Finally, setting the value of a key sometimes should merge with the
previous value, rather than replacing it.
This mixin provides a instance method, `createInstanceMapFor`, that
will reify all of the configuration options set on an instance's
constructor and provide it for the instance to use.
Classes can implement certain hooks that allow them to customize
the requirements listed above:
* `resolveMapConflict` - called when a value is set for an existing
value
* `transformMapKey` - allows a key name (for example, a global path
to a class) to be normalized
* `transformMapValue` - allows a value (for example, a class that
should be instantiated) to be normalized
Classes that implement this mixin should also implement a class
method built using the `generateMapFunctionFor` method:
DS.Adapter.reopenClass({
map: DS.Mappable.generateMapFunctionFor('attributes', function(key, newValue, map) {
var existingValue = map.get(key);
for (var prop in newValue) {
if (!newValue.hasOwnProperty(prop)) { continue; }
existingValue[prop] = newValue[prop];
}
})
});
The function passed to `generateMapFunctionFor` is invoked every time a
new value is added to the map.
**/
var resolveMapConflict = function(oldValue, newValue, mappingsKey) {
return oldValue;
};
var transformMapKey = function(key, value) {
return key;
};
var transformMapValue = function(key, value) {
return value;
};
DS._Mappable = Ember.Mixin.create({
createInstanceMapFor: function(mapName) {
var instanceMeta = Ember.metaPath(this, ['DS.Mappable'], true);
instanceMeta.values = instanceMeta.values || {};
if (instanceMeta.values[mapName]) { return instanceMeta.values[mapName]; }
var instanceMap = instanceMeta.values[mapName] = new Ember.Map();
var klass = this.constructor;
while (klass && klass !== DS.Store) {
this._copyMap(mapName, klass, instanceMap);
klass = klass.superclass;
}
instanceMeta.values[mapName] = instanceMap;
return instanceMap;
},
_copyMap: function(mapName, klass, instanceMap) {
var classMeta = Ember.metaPath(klass, ['DS.Mappable'], true);
var classMap = classMeta[mapName];
if (classMap) {
classMap.forEach(eachMap, this);
}
function eachMap(key, value) {
var transformedKey = (klass.transformMapKey || transformMapKey)(key, value);
var transformedValue = (klass.transformMapValue || transformMapValue)(key, value);
var oldValue = instanceMap.get(transformedKey);
var newValue = transformedValue;
if (oldValue) {
newValue = (this.constructor.resolveMapConflict || resolveMapConflict)(oldValue, newValue, mapName);
}
instanceMap.set(transformedKey, newValue);
}
}
});
DS._Mappable.generateMapFunctionFor = function(mapName, transform) {
return function(key, value) {
var meta = Ember.metaPath(this, ['DS.Mappable'], true);
var map = meta[mapName] || Ember.MapWithDefault.create({
defaultValue: function() { return {}; }
});
transform.call(this, key, value, map);
meta[mapName] = map;
};
};
})();
(function() {
/*globals Ember*/
/*jshint eqnull:true*/
var get = Ember.get, set = Ember.set, fmt = Ember.String.fmt, once = Ember.run.once;
var forEach = Ember.EnumerableUtils.forEach;
// These values are used in the data cache when clientIds are
// needed but the underlying data has not yet been loaded by
// the server.
var UNLOADED = 'unloaded';
var LOADING = 'loading';
var MATERIALIZED = { materialized: true };
var CREATED = { created: true };
// Implementors Note:
//
// The variables in this file are consistently named according to the following
// scheme:
//
// * +id+ means an identifier managed by an external source, provided inside
// the data provided by that source.
// * +clientId+ means a transient numerical identifier generated at runtime by
// the data store. It is important primarily because newly created objects may
// not yet have an externally generated id.
// * +type+ means a subclass of DS.Model.
// Used by the store to normalize IDs entering the store. Despite the fact
// that developers may provide IDs as numbers (e.g., `store.find(Person, 1)`),
// it is important that internally we use strings, since IDs may be serialized
// and lose type information. For example, Ember's router may put a record's
// ID into the URL, and if we later try to deserialize that URL and find the
// corresponding record, we will not know if it is a string or a number.
var coerceId = function(id) {
return id == null ? null : id+'';
};
var map = Ember.EnumerableUtils.map;
/**
The store contains all of the data for records loaded from the server.
It is also responsible for creating instances of DS.Model that wraps
the individual data for a record, so that they can be bound to in your
Handlebars templates.
Create a new store like this:
MyApp.store = DS.Store.create();
You can retrieve DS.Model instances from the store in several ways. To retrieve
a record for a specific id, use the `find()` method:
var record = MyApp.store.find(MyApp.Contact, 123);
By default, the store will talk to your backend using a standard REST mechanism.
You can customize how the store talks to your backend by specifying a custom adapter:
MyApp.store = DS.Store.create({
adapter: 'MyApp.CustomAdapter'
});
You can learn more about writing a custom adapter by reading the `DS.Adapter`
documentation.
*/
DS.Store = Ember.Object.extend(DS._Mappable, {
/**
Many methods can be invoked without specifying which store should be used.
In those cases, the first store created will be used as the default. If
an application has multiple stores, it should specify which store to use
when performing actions, such as finding records by id.
The init method registers this store as the default if none is specified.
*/
init: function() {
// Enforce API revisioning. See BREAKING_CHANGES.md for more.
var revision = get(this, 'revision');
if (revision !== DS.CURRENT_API_REVISION && !Ember.ENV.TESTING) {
throw new Error("Error: The Ember Data library has had breaking API changes since the last time you updated the library. Please review the list of breaking changes at https://github.com/emberjs/data/blob/master/BREAKING_CHANGES.md, then update your store's `revision` property to " + DS.CURRENT_API_REVISION);
}
if (!get(DS, 'defaultStore') || get(this, 'isDefaultStore')) {
set(DS, 'defaultStore', this);
}
// internal bookkeeping; not observable
this.typeMaps = {};
this.recordCache = [];
this.clientIdToId = {};
this.clientIdToType = {};
this.clientIdToData = {};
this.clientIdToPrematerializedData = {};
this.recordArraysByClientId = {};
this.relationshipChanges = {};
this.recordReferences = {};
// Internally, we maintain a map of all unloaded IDs requested by
// a ManyArray. As the adapter loads data into the store, the
// store notifies any interested ManyArrays. When the ManyArray's
// total number of loading records drops to zero, it becomes
// `isLoaded` and fires a `didLoad` event.
this.loadingRecordArrays = {};
this._recordsToSave = Ember.OrderedSet.create();
set(this, 'defaultTransaction', this.transaction());
},
/**
Returns a new transaction scoped to this store. This delegates
responsibility for invoking the adapter's commit mechanism to
a transaction.
Transaction are responsible for tracking changes to records
added to them, and supporting `commit` and `rollback`
functionality. Committing a transaction invokes the store's
adapter, while rolling back a transaction reverses all
changes made to records added to the transaction.
A store has an implicit (default) transaction, which tracks changes
made to records not explicitly added to a transaction.
@see {DS.Transaction}
@returns DS.Transaction
*/
transaction: function() {
return DS.Transaction.create({ store: this });
},
ensureSameTransaction: function(records){
var transactions = Ember.A();
forEach( records, function(record){
if (record){ transactions.pushObject(get(record, 'transaction')); }
});
var transaction = transactions.reduce(function(prev, t) {
if (!get(t, 'isDefault')) {
if (prev === null) { return t; }
Ember.assert("All records in a changed relationship must be in the same transaction. You tried to change the relationship between records when one is in " + t + " and the other is in " + prev, t === prev);
}
return prev;
}, null);
if (transaction) {
forEach( records, function(record){
if (record){ transaction.add(record); }
});
} else {
transaction = transactions.objectAt(0);
}
return transaction;
},
/**
@private
Instructs the store to materialize the data for a given record.
To materialize a record, the store first retrieves the opaque data that was
passed to either `load()` or `loadMany()`. Then, the data and the record
are passed to the adapter's `materialize()` method, which allows the adapter
to translate arbitrary data structures from the adapter into the normalized
form the record expects.
The adapter's `materialize()` method will invoke `materializeAttribute()`,
`materializeHasMany()` and `materializeBelongsTo()` on the record to
populate it with normalized values.
@param {DS.Model} record
*/
materializeData: function(record) {
var clientId = get(record, 'clientId'),
cidToData = this.clientIdToData,
adapter = this.adapterForType(record.constructor),
data = cidToData[clientId];
cidToData[clientId] = MATERIALIZED;
var prematerialized = this.clientIdToPrematerializedData[clientId];
// Ensures the record's data structures are setup
// before being populated by the adapter.
record.setupData();
if (data !== CREATED) {
// Instructs the adapter to extract information from the
// opaque data and materialize the record's attributes and
// relationships.
adapter.materialize(record, data, prematerialized);
}
},
/**
@private
Returns true if there is already a record for this clientId.
This is used to determine whether cleanup is required, so that
"changes" to unmaterialized records do not trigger mass
materialization.
For example, if a parent record in a relationship with a large
number of children is deleted, we want to avoid materializing
those children.
@param {Object} reference
@return {Boolean}
*/
recordIsMaterialized: function(reference) {
return !!this.recordCache[reference.clientId];
},
/**
The adapter to use to communicate to a backend server or other persistence layer.
This can be specified as an instance, a class, or a property path that specifies
where the adapter can be located.
@property {DS.Adapter|String}
*/
adapter: 'DS.RESTAdapter',
/**
@private
Returns a JSON representation of the record using the adapter's
serialization strategy. This method exists primarily to enable
a record, which has access to its store (but not the store's
adapter) to provide a `serialize()` convenience.
The available options are:
* `includeId`: `true` if the record's ID should be included in
the JSON representation
@param {DS.Model} record the record to serialize
@param {Object} options an options hash
*/
serialize: function(record, options) {
return this.adapterForType(record.constructor).serialize(record, options);
},
/**
@private
This property returns the adapter, after resolving a possible
property path.
If the supplied `adapter` was a class, or a String property
path resolved to a class, this property will instantiate the
class.
This property is cacheable, so the same instance of a specified
adapter class should be used for the lifetime of the store.
@returns DS.Adapter
*/
_adapter: Ember.computed(function() {
var adapter = get(this, 'adapter');
if (typeof adapter === 'string') {
adapter = get(this, adapter, false) || get(Ember.lookup, adapter);
}
if (DS.Adapter.detect(adapter)) {
adapter = adapter.create();
}
return adapter;
}).property('adapter'),
/**
@private
A monotonically increasing number to be used to uniquely identify
data and records.
It starts at 1 so other parts of the code can test for truthiness
when provided a `clientId` instead of having to explicitly test
for undefined.
*/
clientIdCounter: 1,
// .....................
// . CREATE NEW RECORD .
// .....................
/**
Create a new record in the current store. The properties passed
to this method are set on the newly created record.
Note: The third `transaction` property is for internal use only.
If you want to create a record inside of a given transaction,
use `transaction.createRecord()` instead of `store.createRecord()`.
@param {subclass of DS.Model} type
@param {Object} properties a hash of properties to set on the
newly created record.
@returns DS.Model
*/
createRecord: function(type, properties, transaction) {
properties = properties || {};
// Create a new instance of the model `type` and put it
// into the specified `transaction`. If no transaction is
// specified, the default transaction will be used.
var record = type._create({
store: this
});
transaction = transaction || get(this, 'defaultTransaction');
// adoptRecord is an internal API that allows records to move
// into a transaction without assertions designed for app
// code. It is used here to ensure that regardless of new
// restrictions on the use of the public `transaction.add()`
// API, we will always be able to insert new records into
// their transaction.
transaction.adoptRecord(record);
// `id` is a special property that may not be a `DS.attr`
var id = properties.id;
// If the passed properties do not include a primary key,
// give the adapter an opportunity to generate one. Typically,
// client-side ID generators will use something like uuid.js
// to avoid conflicts.
var adapter;
if (Ember.isNone(id)) {
adapter = this.adapterForType(type);
if (adapter && adapter.generateIdForRecord) {
id = coerceId(adapter.generateIdForRecord(this, record));
properties.id = id;
}
}
id = coerceId(id);
// Create a new `clientId` and associate it with the
// specified (or generated) `id`. Since we don't have
// any data for the server yet (by definition), store
// the sentinel value CREATED as the data for this
// clientId. If we see this value later, we will skip
// materialization.
var clientId = this.pushData(CREATED, id, type);
// Now that we have a clientId, attach it to the record we
// just created.
set(record, 'clientId', clientId);
// Move the record out of its initial `empty` state into
// the `loaded` state.
record.loadedData();
// Make sure the data is set up so the record doesn't
// try to materialize its nonexistent data.
record.setupData();
// Store the record we just created in the record cache for
// this clientId.
this.recordCache[clientId] = record;
// Set the properties specified on the record.
record.setProperties(properties);
// Resolve record promise
Ember.run(record, 'resolve', record);
return record;
},
// .................
// . DELETE RECORD .
// .................
/**
For symmetry, a record can be deleted via the store.
@param {DS.Model} record
*/
deleteRecord: function(record) {
record.deleteRecord();
},
/**
For symmetry, a record can be unloaded via the store.
@param {DS.Model} record
*/
unloadRecord: function(record) {
record.unloadRecord();
},
// ................
// . FIND RECORDS .
// ................
/**
This is the main entry point into finding records. The first parameter to
this method is always a subclass of `DS.Model`.
You can use the `find` method on a subclass of `DS.Model` directly if your
application only has one store. For example, instead of
`store.find(App.Person, 1)`, you could say `App.Person.find(1)`.
---
To find a record by ID, pass the `id` as the second parameter:
store.find(App.Person, 1);
App.Person.find(1);
If the record with that `id` had not previously been loaded, the store will
return an empty record immediately and ask the adapter to find the data by
calling the adapter's `find` method.
The `find` method will always return the same object for a given type and
`id`. To check whether the adapter has populated a record, you can check
its `isLoaded` property.
---
To find all records for a type, call `find` with no additional parameters:
store.find(App.Person);
App.Person.find();
This will return a `RecordArray` representing all known records for the
given type and kick off a request to the adapter's `findAll` method to load
any additional records for the type.
The `RecordArray` returned by `find()` is live. If any more records for the
type are added at a later time through any mechanism, it will automatically
update to reflect the change.
---
To find a record by a query, call `find` with a hash as the second
parameter:
store.find(App.Person, { page: 1 });
App.Person.find({ page: 1 });
This will return a `RecordArray` immediately, but it will always be an
empty `RecordArray` at first. It will call the adapter's `findQuery`
method, which will populate the `RecordArray` once the server has returned
results.
You can check whether a query results `RecordArray` has loaded by checking
its `isLoaded` property.
*/
find: function(type, id) {
if (id === undefined) {
return this.findAll(type);
}
// We are passed a query instead of an id.
if (Ember.typeOf(id) === 'object') {
return this.findQuery(type, id);
}
return this.findById(type, coerceId(id));
},
/**
@private
This method returns a record for a given type and id combination.
If the store has never seen this combination of type and id before, it
creates a new `clientId` with the LOADING sentinel and asks the adapter to
load the data.
If the store has seen the combination, this method delegates to
`getByReference`.
*/
findById: function(type, id) {
var clientId = this.typeMapFor(type).idToCid[id];
if (clientId) {
return this.findByClientId(type, clientId);
}
clientId = this.pushData(LOADING, id, type);
// create a new instance of the model type in the
// 'isLoading' state
var record = this.materializeRecord(type, clientId, id);
// let the adapter set the data, possibly async
var adapter = this.adapterForType(type);
if (adapter && adapter.find) { adapter.find(this, type, id); }
else { throw "Adapter is either null or does not implement `find` method"; }
return record;
},
reloadRecord: function(record) {
var type = record.constructor,
adapter = this.adapterForType(type),
id = get(record, 'id');
Ember.assert("You cannot update a record without an ID", id);
Ember.assert("You tried to update a record but you have no adapter (for " + type + ")", adapter);
Ember.assert("You tried to update a record but your adapter does not implement `find`", adapter.find);
adapter.find(this, type, id);
},
/**
@private
This method returns a record for a given clientId.
If there is no record object yet for the clientId, this method materializes
a new record object. This allows adapters to eagerly load large amounts of
data into the store, and avoid incurring the cost to create the objects
until they are requested.
Several parts of Ember Data call this method:
* findById, if a clientId already exists for a given type and
id combination
* OneToManyChange, which is backed by clientIds, when getChild,
getOldParent or getNewParent are called
* RecordArray, which is backed by clientIds, when an object at
a particular index is looked up
In short, it's a convenient way to get a record for a known
clientId, materializing it if necessary.
@param {Class} type
@param {Number|String} clientId
*/
findByClientId: function(type, clientId) {
var cidToData, record, id;
record = this.recordCache[clientId];
if (!record) {
// create a new instance of the model type in the
// 'isLoading' state
id = this.clientIdToId[clientId];
record = this.materializeRecord(type, clientId, id);
cidToData = this.clientIdToData;
if (typeof cidToData[clientId] === 'object') {
record.loadedData();
}
}
return record;
},
/**
@private
Given a type and array of `clientId`s, determines which of those
`clientId`s has not yet been loaded.
In preparation for loading, this method also marks any unloaded
`clientId`s as loading.
*/
neededReferences: function(type, references) {
var neededReferences = [],
cidToData = this.clientIdToData,
reference;
for (var i=0, l=references.length; i<l; i++) {
reference = references[i];
if (cidToData[reference.clientId] === UNLOADED) {
neededReferences.push(reference);
cidToData[reference.clientId] = LOADING;
}
}
return neededReferences;
},
/**
@private
This method is the entry point that relationships use to update
themselves when their underlying data changes.
First, it determines which of its `clientId`s are still unloaded,
then converts the needed `clientId`s to IDs and invokes `findMany`
on the adapter.
*/
fetchUnloadedReferences: function(type, references, owner) {
var neededReferences = this.neededReferences(type, references);
this.fetchMany(type, neededReferences, owner);
},
/**
@private
This method takes a type and list of `clientId`s, converts the
`clientId`s into IDs, and then invokes the adapter's `findMany`
method.
It is used both by a brand new relationship (via the `findMany`
method) or when the data underlying an existing relationship
changes (via the `fetchUnloadedReferences` method).
*/
fetchMany: function(type, references, owner) {
if (!references.length) { return; }
var ids = map(references, function(reference) {
return reference.id;
});
var adapter = this.adapterForType(type);
if (adapter && adapter.findMany) { adapter.findMany(this, type, ids, owner); }
else { throw "Adapter is either null or does not implement `findMany` method"; }
},
referenceForId: function(type, id) {
var clientId = this.clientIdForId(type, id);
return this.referenceForClientId(clientId);
},
referenceForClientId: function(clientId) {
var references = this.recordReferences;
if (references[clientId]) {
return references[clientId];
}
var type = this.clientIdToType[clientId];
return references[clientId] = {
id: this.idForClientId(clientId),
clientId: clientId,
type: type
};
},
recordForReference: function(reference) {
return this.findByClientId(reference.type, reference.clientId);
},
/**
@private
`findMany` is the entry point that relationships use to generate a
new `ManyArray` for the list of IDs specified by the server for
the relationship.
Its responsibilities are:
* convert the IDs into clientIds
* determine which of the clientIds still need to be loaded
* create a new ManyArray whose content is *all* of the clientIds
* notify the ManyArray of the number of its elements that are
already loaded
* insert the unloaded clientIds into the `loadingRecordArrays`
bookkeeping structure, which will allow the `ManyArray` to know
when all of its loading elements are loaded from the server.
* ask the adapter to load the unloaded elements, by invoking
findMany with the still-unloaded IDs.
*/
findMany: function(type, ids, record, relationship) {
// 1. Convert ids to client ids
// 2. Determine which of the client ids need to be loaded
// 3. Create a new ManyArray whose content is ALL of the clientIds
// 4. Decrement the ManyArray's counter by the number of loaded clientIds
// 5. Put the ManyArray into our bookkeeping data structure, keyed on
// the needed clientIds
// 6. Ask the adapter to load the records for the unloaded clientIds (but
// convert them back to ids)
if (!Ember.isArray(ids)) {
var adapter = this.adapterForType(type);
if (adapter && adapter.findHasMany) { adapter.findHasMany(this, record, relationship, ids); }
else if (ids !== undefined) { throw fmt("Adapter is either null or does not implement `findHasMany` method", this); }
return this.createManyArray(type, Ember.A());
}
// Coerce server IDs into Record Reference
var references = map(ids, function(reference) {
if (typeof reference !== 'object' && reference !== null) {
return this.referenceForId(type, reference);
}
return reference;
}, this);
var neededReferences = this.neededReferences(type, references),
manyArray = this.createManyArray(type, Ember.A(references)),
loadingRecordArrays = this.loadingRecordArrays,
reference, clientId, i, l;
// Start the decrementing counter on the ManyArray at the number of
// records we need to load from the adapter
manyArray.loadingRecordsCount(neededReferences.length);
if (neededReferences.length) {
for (i=0, l=neededReferences.length; i<l; i++) {
reference = neededReferences[i];
clientId = reference.clientId;
// keep track of the record arrays that a given loading record
// is part of. This way, if the same record is in multiple
// ManyArrays, all of their loading records counters will be
// decremented when the adapter provides the data.
if (loadingRecordArrays[clientId]) {
loadingRecordArrays[clientId].push(manyArray);
} else {
this.loadingRecordArrays[clientId] = [ manyArray ];
}
}
this.fetchMany(type, neededReferences, record);
} else {
// all requested records are available
manyArray.set('isLoaded', true);
Ember.run.once(function() {
manyArray.trigger('didLoad');
});
}
return manyArray;
},
/**
@private
This method delegates a query to the adapter. This is the one place where
adapter-level semantics are exposed to the application.
Exposing queries this way seems preferable to creating an abstract query
language for all server-side queries, and then require all adapters to
implement them.
@param {Class} type
@param {Object} query an opaque query to be used by the adapter
@return {DS.AdapterPopulatedRecordArray}
*/
findQuery: function(type, query) {
var array = DS.AdapterPopulatedRecordArray.create({ type: type, query: query, content: Ember.A([]), store: this });
var adapter = this.adapterForType(type);
if (adapter && adapter.findQuery) { adapter.findQuery(this, type, query, array); }
else { throw "Adapter is either null or does not implement `findQuery` method"; }
return array;
},
/**
@private
This method returns an array of all records adapter can find.
It triggers the adapter's `findAll` method to give it an opportunity to populate
the array with records of that type.
@param {Class} type
@return {DS.AdapterPopulatedRecordArray}
*/
findAll: function(type) {
var array = this.all(type);
this.fetchAll(type, array);
return array;
},
/**
@private
*/
fetchAll: function(type, array) {
var sinceToken = this.typeMapFor(type).sinceToken,
adapter = this.adapterForType(type);
set(array, 'isUpdating', true);
if (adapter && adapter.findAll) { adapter.findAll(this, type, sinceToken); }
else { throw "Adapter is either null or does not implement `findAll` method"; }
},
/**
*/
sinceForType: function(type, sinceToken) {
this.typeMapFor(type).sinceToken = sinceToken;
},
/**
*/
didUpdateAll: function(type) {
var findAllCache = this.typeMapFor(type).findAllCache;
set(findAllCache, 'isUpdating', false);
},
/**
This method returns a filtered array that contains all of the known records
for a given type.
Note that because it's just a filter, it will have any locally
created records of the type.
Also note that multiple calls to `all` for a given type will always
return the same RecordArray.
@param {Class} type
@return {DS.RecordArray}
*/
all: function(type) {
var typeMap = this.typeMapFor(type),
findAllCache = typeMap.findAllCache;
if (findAllCache) { return findAllCache; }
var array = DS.RecordArray.create({ type: type, content: Ember.A([]), store: this, isLoaded: true });
this.registerRecordArray(array, type);
typeMap.findAllCache = array;
return array;
},
/**
Takes a type and filter function, and returns a live RecordArray that
remains up to date as new records are loaded into the store or created
locally.
The callback function takes a materialized record, and returns true
if the record should be included in the filter and false if it should
not.
The filter function is called once on all records for the type when
it is created, and then once on each newly loaded or created record.
If any of a record's properties change, or if it changes state, the
filter function will be invoked again to determine whether it should
still be in the array.
Note that the existence of a filter on a type will trigger immediate
materialization of all loaded data for a given type, so you might
not want to use filters for a type if you are loading many records
into the store, many of which are not active at any given time.
In this scenario, you might want to consider filtering the raw
data before loading it into the store.
@param {Class} type
@param {Function} filter
@return {DS.FilteredRecordArray}
*/
filter: function(type, query, filter) {
// allow an optional server query
if (arguments.length === 3) {
this.findQuery(type, query);
} else if (arguments.length === 2) {
filter = query;
}
var array = DS.FilteredRecordArray.create({ type: type, content: Ember.A([]), store: this, filterFunction: filter });
this.registerRecordArray(array, type, filter);
return array;
},
/**
This method returns if a certain record is already loaded
in the store. Use this function to know beforehand if a find()
will result in a request or that it will be a cache hit.
@param {Class} type
@param {string} id
@return {boolean}
*/
recordIsLoaded: function(type, id) {
return !Ember.isNone(this.typeMapFor(type).idToCid[id]);
},
// ............
// . UPDATING .
// ............
/**
@private
If the adapter updates attributes or acknowledges creation
or deletion, the record will notify the store to update its
membership in any filters.
To avoid thrashing, this method is invoked only once per
run loop per record.
@param {Class} type
@param {Number|String} clientId
@param {DS.Model} record
*/
dataWasUpdated: function(type, reference, record) {
// Because data updates are invoked at the end of the run loop,
// it is possible that a record might be deleted after its data
// has been modified and this method was scheduled to be called.
//
// If that's the case, the record would have already been removed
// from all record arrays; calling updateRecordArrays would just
// add it back. If the record is deleted, just bail. It shouldn't
// give us any more trouble after this.
if (get(record, 'isDeleted')) { return; }
var cidToData = this.clientIdToData,
clientId = reference.clientId,
data = cidToData[clientId];
if (typeof data === "object") {
this.updateRecordArrays(type, clientId);
}
},
// .................
// . BASIC ADAPTER .
// .................
scheduleSave: function(record) {
this._recordsToSave.add(record);
Ember.run.once(this, 'flushSavedRecords');
},
flushSavedRecords: function() {
var created = Ember.OrderedSet.create();
var updated = Ember.OrderedSet.create();
var deleted = Ember.OrderedSet.create();
this._recordsToSave.forEach(function(record) {
if (get(record, 'isNew')) {
created.add(record);
} else if (get(record, 'isDeleted')) {
deleted.add(record);
} else {
updated.add(record);
}
});
this._recordsToSave.clear();
get(this, '_adapter').commit(this, {
created: created,
updated: updated,
deleted: deleted
});
},
// ..............
// . PERSISTING .
// ..............
/**
This method delegates committing to the store's implicit
transaction.
Calling this method is essentially a request to persist
any changes to records that were not explicitly added to
a transaction.
*/
commit: function() {
get(this, 'defaultTransaction').commit();
},
/**
Adapters should call this method if they would like to acknowledge
that all changes related to a record (other than relationship
changes) have persisted.
Because relationship changes affect multiple records, the adapter
is responsible for acknowledging the change to the relationship
directly (using `store.didUpdateRelationship`) when all aspects
of the relationship change have persisted.
It can be called for created, deleted or updated records.
If the adapter supplies new data, that data will become the new
canonical data for the record. That will result in blowing away
all local changes and rematerializing the record with the new
data (the "sledgehammer" approach).
Alternatively, if the adapter does not supply new data, the record
will collapse all local changes into its saved data. Subsequent
rollbacks of the record will roll back to this point.
If an adapter is acknowledging receipt of a newly created record
that did not generate an id in the client, it *must* either
provide data or explicitly invoke `store.didReceiveId` with
the server-provided id.
Note that an adapter may not supply new data when acknowledging
a deleted record.
@see DS.Store#didUpdateRelationship
@param {DS.Model} record the in-flight record
@param {Object} data optional data (see above)
*/
didSaveRecord: function(record, data) {
record.adapterDidCommit();
if (data) {
this.updateId(record, data);
this.updateRecordData(record, data);
} else {
this.didUpdateAttributes(record);
}
},
/**
For convenience, if an adapter is performing a bulk commit, it can also
acknowledge all of the records at once.
If the adapter supplies an array of data, they must be in the same order as
the array of records passed in as the first parameter.
@param {#forEach} list a list of records whose changes the
adapter is acknowledging. You can pass any object that
has an ES5-like `forEach` method, including the
`OrderedSet` objects passed into the adapter at commit
time.
@param {Array[Object]} dataList an Array of data. This
parameter must be an integer-indexed Array-like.
*/
didSaveRecords: function(list, dataList) {
var i = 0;
list.forEach(function(record) {
this.didSaveRecord(record, dataList && dataList[i++]);
}, this);
},
/**
This method allows the adapter to specify that a record
could not be saved because it had backend-supplied validation
errors.
The errors object must have keys that correspond to the
attribute names. Once each of the specified attributes have
changed, the record will automatically move out of the
invalid state and be ready to commit again.
TODO: We should probably automate the process of converting
server names to attribute names using the existing serializer
infrastructure.
@param {DS.Model} record
@param {Object} errors
*/
recordWasInvalid: function(record, errors) {
record.adapterDidInvalidate(errors);
},
/**
This method allows the adapter to specify that a record
could not be saved because the server returned an unhandled
error.
@param {DS.Model} record
*/
recordWasError: function(record) {
record.adapterDidError();
},
/**
This is a lower-level API than `didSaveRecord` that allows an
adapter to acknowledge the persistence of a single attribute.
This is useful if an adapter needs to make multiple asynchronous
calls to fully persist a record. The record will keep track of
which attributes and relationships are still outstanding and
automatically move into the `saved` state once the adapter has
acknowledged everything.
If a value is provided, it clobbers the locally specified value.
Otherwise, the local value becomes the record's last known
saved value (which is used when rolling back a record).
Note that the specified attributeName is the normalized name
specified in the definition of the `DS.Model`, not a key in
the server-provided data.
Also note that the adapter is responsible for performing any
transformations on the value using the serializer API.
@param {DS.Model} record
@param {String} attributeName
@param {Object} value
*/
didUpdateAttribute: function(record, attributeName, value) {
record.adapterDidUpdateAttribute(attributeName, value);
},
/**
This method allows an adapter to acknowledge persistence
of all attributes of a record but not relationships or
other factors.
It loops through the record's defined attributes and
notifies the record that they are all acknowledged.
This method does not take optional values, because
the adapter is unlikely to have a hash of normalized
keys and transformed values, and instead of building
one up, it should just call `didUpdateAttribute` as
needed.
This method is intended as a middle-ground between
`didSaveRecord`, which acknowledges all changes to
a record, and `didUpdateAttribute`, which allows an
adapter fine-grained control over updates.
@param {DS.Model} record
*/
didUpdateAttributes: function(record) {
record.eachAttribute(function(attributeName) {
this.didUpdateAttribute(record, attributeName);
}, this);
},
/**
This allows an adapter to acknowledge that it has saved all
necessary aspects of a relationship change.
This is separated from acknowledging the record itself
(via `didSaveRecord`) because a relationship change can
involve as many as three separate records. Records should
only move out of the in-flight state once the server has
acknowledged all of their relationships, and this differs
based upon the adapter's semantics.
There are three basic scenarios by which an adapter can
save a relationship.
### Foreign Key
An adapter can save all relationship changes by updating
a foreign key on the child record. If it does this, it
should acknowledge the changes when the child record is
saved.
record.eachRelationship(function(name, meta) {
if (meta.kind === 'belongsTo') {
store.didUpdateRelationship(record, name);
}
});
store.didSaveRecord(record, data);
### Embedded in Parent
An adapter can save one-to-many relationships by embedding
IDs (or records) in the parent object. In this case, the
relationship is not considered acknowledged until both the
old parent and new parent have acknowledged the change.
In this case, the adapter should keep track of the old
parent and new parent, and acknowledge the relationship
change once both have acknowledged. If one of the two
sides does not exist (e.g. the new parent does not exist
because of nulling out the belongs-to relationship),
the adapter should acknowledge the relationship once
the other side has acknowledged.
### Separate Entity
An adapter can save relationships as separate entities
on the server. In this case, they should acknowledge
the relationship as saved once the server has
acknowledged the entity.
@see DS.Store#didSaveRecord
@param {DS.Model} record
@param {DS.Model} relationshipName
*/
didUpdateRelationship: function(record, relationshipName) {
var relationship = this.relationshipChangeFor(get(record, 'clientId'), relationshipName);
//TODO(Igor)
if (relationship) { relationship.adapterDidUpdate(); }
},
/**
This allows an adapter to acknowledge all relationship changes
for a given record.
Like `didUpdateAttributes`, this is intended as a middle ground
between `didSaveRecord` and fine-grained control via the
`didUpdateRelationship` API.
*/
didUpdateRelationships: function(record) {
var changes = this.relationshipChangesFor(get(record, '_reference'));
for (var name in changes) {
if (!changes.hasOwnProperty(name)) { continue; }
changes[name].adapterDidUpdate();
}
},
/**
When acknowledging the creation of a locally created record,
adapters must supply an id (if they did not implement
`generateIdForRecord` to generate an id locally).
If an adapter does not use `didSaveRecord` and supply a hash
(for example, if it needs to make multiple HTTP requests to
create and then update the record), it will need to invoke
`didReceiveId` with the backend-supplied id.
When not using `didSaveRecord`, an adapter will need to
invoke:
* didReceiveId (unless the id was generated locally)
* didCreateRecord
* didUpdateAttribute(s)
* didUpdateRelationship(s)
@param {DS.Model} record
@param {Number|String} id
*/
didReceiveId: function(record, id) {
var typeMap = this.typeMapFor(record.constructor),
clientId = get(record, 'clientId'),
oldId = get(record, 'id');
Ember.assert("An adapter cannot assign a new id to a record that already has an id. " + record + " had id: " + oldId + " and you tried to update it with " + id + ". This likely happened because your server returned data in response to a find or update that had a different id than the one you sent.", oldId === undefined || id === oldId);
typeMap.idToCid[id] = clientId;
this.clientIdToId[clientId] = id;
},
/**
@private
This method re-indexes the data by its clientId in the store
and then notifies the record that it should rematerialize
itself.
@param {DS.Model} record
@param {Object} data
*/
updateRecordData: function(record, data) {
var clientId = get(record, 'clientId'),
cidToData = this.clientIdToData;
cidToData[clientId] = data;
record.didChangeData();
},
/**
@private
If an adapter invokes `didSaveRecord` with data, this method
extracts the id from the supplied data (using the adapter's
`extractId()` method) and indexes the clientId with that id.
@param {DS.Model} record
@param {Object} data
*/
updateId: function(record, data) {
var typeMap = this.typeMapFor(record.constructor),
clientId = get(record, 'clientId'),
oldId = get(record, 'id'),
type = record.constructor,
id = this.preprocessData(type, data);
Ember.assert("An adapter cannot assign a new id to a record that already has an id. " + record + " had id: " + oldId + " and you tried to update it with " + id + ". This likely happened because your server returned data in response to a find or update that had a different id than the one you sent.", oldId === null || id === oldId);
typeMap.idToCid[id] = clientId;
this.clientIdToId[clientId] = id;
this.referenceForClientId(clientId).id = id;
},
/**
@private
This method receives opaque data provided by the adapter and
preprocesses it, returning an ID.
The actual preprocessing takes place in the adapter. If you would
like to change the default behavior, you should override the
appropriate hooks in `DS.Serializer`.
@see {DS.Serializer}
@return {String} id the id represented by the data
*/
preprocessData: function(type, data) {
return this.adapterForType(type).extractId(type, data);
},
// .................
// . RECORD ARRAYS .
// .................
/**
@private
Register a RecordArray for a given type to be backed by
a filter function. This will cause the array to update
automatically when records of that type change attribute
values or states.
@param {DS.RecordArray} array
@param {Class} type
@param {Function} filter
*/
registerRecordArray: function(array, type, filter) {
var recordArrays = this.typeMapFor(type).recordArrays;
recordArrays.push(array);
this.updateRecordArrayFilter(array, type, filter);
},
/**
@private
Create a `DS.ManyArray` for a type and list of clientIds
and index the `ManyArray` under each clientId. This allows
us to efficiently remove records from `ManyArray`s when
they are deleted.
@param {Class} type
@param {Array} clientIds
@return {DS.ManyArray}
*/
createManyArray: function(type, clientIds) {
var array = DS.ManyArray.create({ type: type, content: clientIds, store: this });
clientIds.forEach(function(clientId) {
var recordArrays = this.recordArraysForClientId(clientId);
recordArrays.add(array);
}, this);
return array;
},
/**
@private
This method is invoked if the `filterFunction` property is
changed on a `DS.FilteredRecordArray`.
It essentially re-runs the filter from scratch. This same
method is invoked when the filter is created in th first place.
*/
updateRecordArrayFilter: function(array, type, filter) {
var typeMap = this.typeMapFor(type),
cidToData = this.clientIdToData,
clientIds = typeMap.clientIds,
clientId, data, shouldFilter, record;
for (var i=0, l=clientIds.length; i<l; i++) {
clientId = clientIds[i];
shouldFilter = false;
data = cidToData[clientId];
if (typeof data === 'object') {
if (record = this.recordCache[clientId]) {
if (!get(record, 'isDeleted')) { shouldFilter = true; }
} else {
shouldFilter = true;
}
if (shouldFilter) {
this.updateRecordArray(array, filter, type, clientId);
}
}
}
},
updateRecordArraysLater: function(type, clientId) {
Ember.run.once(this, function() {
this.updateRecordArrays(type, clientId);
});
},
/**
@private
This method is invoked whenever data is loaded into the store
by the adapter or updated by the adapter, or when an attribute
changes on a record.
It updates all filters that a record belongs to.
To avoid thrashing, it only runs once per run loop per record.
@param {Class} type
@param {Number|String} clientId
*/
updateRecordArrays: function(type, clientId) {
var recordArrays = this.typeMapFor(type).recordArrays,
filter;
recordArrays.forEach(function(array) {
filter = get(array, 'filterFunction');
this.updateRecordArray(array, filter, type, clientId);
}, this);
// loop through all manyArrays containing an unloaded copy of this
// clientId and notify them that the record was loaded.
var manyArrays = this.loadingRecordArrays[clientId];
if (manyArrays) {
for (var i=0, l=manyArrays.length; i<l; i++) {
manyArrays[i].loadedRecord();
}
this.loadingRecordArrays[clientId] = null;
}
},
/**
@private
Update an individual filter.
@param {DS.FilteredRecordArray} array
@param {Function} filter
@param {Class} type
@param {Number|String} clientId
*/
updateRecordArray: function(array, filter, type, clientId) {
var shouldBeInArray, record;
if (!filter) {
shouldBeInArray = true;
} else {
record = this.findByClientId(type, clientId);
shouldBeInArray = filter(record);
}
var content = get(array, 'content');
var recordArrays = this.recordArraysForClientId(clientId);
var reference = this.referenceForClientId(clientId);
if (shouldBeInArray) {
recordArrays.add(array);
array.addReference(reference);
} else if (!shouldBeInArray) {
recordArrays.remove(array);
array.removeReference(reference);
}
},
/**
@private
When a record is deleted, it is removed from all its
record arrays.
@param {DS.Model} record
*/
removeFromRecordArrays: function(record) {
var reference = get(record, '_reference');
var recordArrays = this.recordArraysForClientId(reference.clientId);
recordArrays.forEach(function(array) {
array.removeReference(reference);
});
},
// ............
// . INDEXING .
// ............
/**
@private
Return a list of all `DS.RecordArray`s a clientId is
part of.
@return {Object(clientId: Ember.OrderedSet)}
*/
recordArraysForClientId: function(clientId) {
var recordArrays = get(this, 'recordArraysByClientId');
var ret = recordArrays[clientId];
if (!ret) {
ret = recordArrays[clientId] = Ember.OrderedSet.create();
}
return ret;
},
typeMapFor: function(type) {
var typeMaps = get(this, 'typeMaps');
var guidForType = Ember.guidFor(type);
var typeMap = typeMaps[guidForType];
if (typeMap) {
return typeMap;
} else {
return (typeMaps[guidForType] =
{
idToCid: {},
clientIds: [],
recordArrays: []
});
}
},
/** @private
For a given type and id combination, returns the client id used by the store.
If no client id has been assigned yet, one will be created and returned.
@param {DS.Model} type
@param {String|Number} id
*/
clientIdForId: function(type, id) {
id = coerceId(id);
var clientId = this.typeMapFor(type).idToCid[id];
if (clientId !== undefined) { return clientId; }
return this.pushData(UNLOADED, id, type);
},
/**
@private
This method works exactly like `clientIdForId`, but does not
require looking up the `typeMap` for every `clientId` and
invoking a method per `clientId`.
*/
clientIdsForIds: function(type, ids) {
var typeMap = this.typeMapFor(type),
idToClientIdMap = typeMap.idToCid;
return map(ids, function(id) {
id = coerceId(id);
var clientId = idToClientIdMap[id];
if (clientId) { return clientId; }
return this.pushData(UNLOADED, id, type);
}, this);
},
typeForClientId: function(clientId) {
return this.clientIdToType[clientId];
},
idForClientId: function(clientId) {
return this.clientIdToId[clientId];
},
// ................
// . LOADING DATA .
// ................
/**
Load new data into the store for a given id and type combination.
If data for that record had been loaded previously, the new information
overwrites the old.
If the record you are loading data for has outstanding changes that have not
yet been saved, an exception will be thrown.
@param {DS.Model} type
@param {String|Number} id
@param {Object} data the data to load
*/
load: function(type, data, prematerialized) {
var id;
if (typeof data === 'number' || typeof data === 'string') {
id = data;
data = prematerialized;
prematerialized = null;
}
if (prematerialized && prematerialized.id) {
id = prematerialized.id;
} else if (id === undefined) {
id = this.preprocessData(type, data);
}
id = coerceId(id);
var typeMap = this.typeMapFor(type),
cidToData = this.clientIdToData,
clientId = typeMap.idToCid[id],
cidToPrematerialized = this.clientIdToPrematerializedData;
if (clientId !== undefined) {
cidToData[clientId] = data;
cidToPrematerialized[clientId] = prematerialized;
var record = this.recordCache[clientId];
if (record) {
once(record, 'loadedData');
}
} else {
clientId = this.pushData(data, id, type);
cidToPrematerialized[clientId] = prematerialized;
}
this.updateRecordArraysLater(type, clientId);
return this.referenceForClientId(clientId);
},
prematerialize: function(reference, prematerialized) {
this.clientIdToPrematerializedData[reference.clientId] = prematerialized;
},
loadMany: function(type, ids, dataList) {
if (dataList === undefined) {
dataList = ids;
ids = map(dataList, function(data) {
return this.preprocessData(type, data);
}, this);
}
return map(ids, function(id, i) {
return this.load(type, id, dataList[i]);
}, this);
},
loadHasMany: function(record, key, ids) {
record.materializeHasMany(key, ids);
// Update any existing many arrays that use the previous IDs,
// if necessary.
record.hasManyDidChange(key);
var relationship = record.cacheFor(key);
// TODO (tomdale) this assumes that loadHasMany *always* means
// that the records for the provided IDs are loaded.
if (relationship) {
set(relationship, 'isLoaded', true);
relationship.trigger('didLoad');
}
},
/** @private
Stores data for the specified type and id combination and returns
the client id.
@param {Object} data
@param {String|Number} id
@param {DS.Model} type
@returns {Number}
*/
pushData: function(data, id, type) {
var typeMap = this.typeMapFor(type);
var idToClientIdMap = typeMap.idToCid,
clientIdToIdMap = this.clientIdToId,
clientIdToTypeMap = this.clientIdToType,
clientIds = typeMap.clientIds,
cidToData = this.clientIdToData;
Ember.assert('The id ' + id + ' has already been used with another record of type ' + type.toString() + '.', !id || !idToClientIdMap[id]);
var clientId = ++this.clientIdCounter;
cidToData[clientId] = data;
clientIdToTypeMap[clientId] = type;
// if we're creating an item, this process will be done
// later, once the object has been persisted.
if (id) {
idToClientIdMap[id] = clientId;
clientIdToIdMap[clientId] = id;
}
clientIds.push(clientId);
return clientId;
},
// ..........................
// . RECORD MATERIALIZATION .
// ..........................
materializeRecord: function(type, clientId, id) {
var record;
this.recordCache[clientId] = record = type._create({
store: this,
clientId: clientId
});
set(record, 'id', id);
get(this, 'defaultTransaction').adoptRecord(record);
record.loadingData();
return record;
},
dematerializeRecord: function(record) {
var id = get(record, 'id'),
clientId = get(record, 'clientId'),
type = this.typeForClientId(clientId),
typeMap = this.typeMapFor(type);
record.updateRecordArrays();
delete this.recordCache[clientId];
delete this.clientIdToId[clientId];
delete this.clientIdToType[clientId];
delete this.clientIdToData[clientId];
delete this.recordArraysByClientId[clientId];
if (id) { delete typeMap.idToCid[id]; }
},
willDestroy: function() {
if (get(DS, 'defaultStore') === this) {
set(DS, 'defaultStore', null);
}
},
// ........................
// . RELATIONSHIP CHANGES .
// ........................
addRelationshipChangeFor: function(clientReference, childKey, parentReference, parentKey, change) {
var clientId = clientReference.clientId,
parentClientId = parentReference ? parentReference.clientId : parentReference;
var key = childKey + parentKey;
var changes = this.relationshipChanges;
if (!(clientId in changes)) {
changes[clientId] = {};
}
if (!(parentClientId in changes[clientId])) {
changes[clientId][parentClientId] = {};
}
if (!(key in changes[clientId][parentClientId])) {
changes[clientId][parentClientId][key] = {};
}
changes[clientId][parentClientId][key][change.changeType] = change;
},
removeRelationshipChangeFor: function(clientReference, childKey, parentReference, parentKey, type) {
var clientId = clientReference.clientId,
parentClientId = parentReference ? parentReference.clientId : parentReference;
var changes = this.relationshipChanges;
var key = childKey + parentKey;
if (!(clientId in changes) || !(parentClientId in changes[clientId]) || !(key in changes[clientId][parentClientId])){
return;
}
delete changes[clientId][parentClientId][key][type];
},
relationshipChangeFor: function(clientId, childKey, parentClientId, parentKey, type) {
var changes = this.relationshipChanges;
var key = childKey + parentKey;
if (!(clientId in changes) || !(parentClientId in changes[clientId])){
return;
}
if(type){
return changes[clientId][parentClientId][key][type];
}
else{
//TODO(Igor) what if both present
return changes[clientId][parentClientId][key]["add"] || changes[clientId][parentClientId][key]["remove"];
}
},
relationshipChangePairsFor: function(reference){
var toReturn = [];
if( !reference ) { return toReturn; }
//TODO(Igor) What about the other side
var changesObject = this.relationshipChanges[reference.clientId];
for (var objKey in changesObject){
if(changesObject.hasOwnProperty(objKey)){
for (var changeKey in changesObject[objKey]){
if(changesObject[objKey].hasOwnProperty(changeKey)){
toReturn.push(changesObject[objKey][changeKey]);
}
}
}
}
return toReturn;
},
relationshipChangesFor: function(reference) {
var toReturn = [];
if( !reference ) { return toReturn; }
var relationshipPairs = this.relationshipChangePairsFor(reference);
forEach(relationshipPairs, function(pair){
var addedChange = pair["add"];
var removedChange = pair["remove"];
if(addedChange){
toReturn.push(addedChange);
}
if(removedChange){
toReturn.push(removedChange);
}
});
return toReturn;
},
// ......................
// . PER-TYPE ADAPTERS
// ......................
adapterForType: function(type) {
this._adaptersMap = this.createInstanceMapFor('adapters');
var adapter = this._adaptersMap.get(type);
if (adapter) { return adapter; }
return this.get('_adapter');
},
// ..............................
// . RECORD CHANGE NOTIFICATION .
// ..............................
recordAttributeDidChange: function(reference, attributeName, newValue, oldValue) {
var record = this.recordForReference(reference),
dirtySet = new Ember.OrderedSet(),
adapter = this.adapterForType(record.constructor);
if (adapter.dirtyRecordsForAttributeChange) {
adapter.dirtyRecordsForAttributeChange(dirtySet, record, attributeName, newValue, oldValue);
}
dirtySet.forEach(function(record) {
record.adapterDidDirty();
});
},
recordBelongsToDidChange: function(dirtySet, child, relationship) {
var adapter = this.adapterForType(child.constructor);
if (adapter.dirtyRecordsForBelongsToChange) {
adapter.dirtyRecordsForBelongsToChange(dirtySet, child, relationship);
}
// adapterDidDirty is called by the RelationshipChange that created
// the dirtySet.
},
recordHasManyDidChange: function(dirtySet, parent, relationship) {
var adapter = this.adapterForType(parent.constructor);
if (adapter.dirtyRecordsForHasManyChange) {
adapter.dirtyRecordsForHasManyChange(dirtySet, parent, relationship);
}
// adapterDidDirty is called by the RelationshipChange that created
// the dirtySet.
}
});
DS.Store.reopenClass({
registerAdapter: DS._Mappable.generateMapFunctionFor('adapters', function(type, adapter, map) {
map.set(type, adapter);
}),
transformMapKey: function(key) {
if (typeof key === 'string') {
var transformedKey;
transformedKey = get(Ember.lookup, key);
Ember.assert("Could not find model at path " + key, transformedKey);
return transformedKey;
} else {
return key;
}
},
transformMapValue: function(key, value) {
if (Ember.Object.detect(value)) {
return value.create();
}
return value;
}
});
})();
(function() {
var get = Ember.get, set = Ember.set,
once = Ember.run.once, arrayMap = Ember.ArrayPolyfills.map;
/**
This file encapsulates the various states that a record can transition
through during its lifecycle.
### State Manager
A record's state manager explicitly tracks what state a record is in
at any given time. For instance, if a record is newly created and has
not yet been sent to the adapter to be saved, it would be in the
`created.uncommitted` state. If a record has had local modifications
made to it that are in the process of being saved, the record would be
in the `updated.inFlight` state. (These state paths will be explained
in more detail below.)
Events are sent by the record or its store to the record's state manager.
How the state manager reacts to these events is dependent on which state
it is in. In some states, certain events will be invalid and will cause
an exception to be raised.
States are hierarchical. For example, a record can be in the
`deleted.start` state, then transition into the `deleted.inFlight` state.
If a child state does not implement an event handler, the state manager
will attempt to invoke the event on all parent states until the root state is
reached. The state hierarchy of a record is described in terms of a path
string. You can determine a record's current state by getting its manager's
current state path:
record.get('stateManager.currentPath');
//=> "created.uncommitted"
The `DS.Model` states are themselves stateless. What we mean is that,
though each instance of a record also has a unique instance of a
`DS.StateManager`, the hierarchical states that each of *those* points
to is a shared data structure. For performance reasons, instead of each
record getting its own copy of the hierarchy of states, each state
manager points to this global, immutable shared instance. How does a
state know which record it should be acting on? We pass a reference to
the current state manager as the first parameter to every method invoked
on a state.
The state manager passed as the first parameter is where you should stash
state about the record if needed; you should never store data on the state
object itself. If you need access to the record being acted on, you can
retrieve the state manager's `record` property. For example, if you had
an event handler `myEvent`:
myEvent: function(manager) {
var record = manager.get('record');
record.doSomething();
}
For more information about state managers in general, see the Ember.js
documentation on `Ember.StateManager`.
### Events, Flags, and Transitions
A state may implement zero or more events, flags, or transitions.
#### Events
Events are named functions that are invoked when sent to a record. The
state manager will first look for a method with the given name on the
current state. If no method is found, it will search the current state's
parent, and then its grandparent, and so on until reaching the top of
the hierarchy. If the root is reached without an event handler being found,
an exception will be raised. This can be very helpful when debugging new
features.
Here's an example implementation of a state with a `myEvent` event handler:
aState: DS.State.create({
myEvent: function(manager, param) {
console.log("Received myEvent with "+param);
}
})
To trigger this event:
record.send('myEvent', 'foo');
//=> "Received myEvent with foo"
Note that an optional parameter can be sent to a record's `send()` method,
which will be passed as the second parameter to the event handler.
Events should transition to a different state if appropriate. This can be
done by calling the state manager's `transitionTo()` method with a path to the
desired state. The state manager will attempt to resolve the state path
relative to the current state. If no state is found at that path, it will
attempt to resolve it relative to the current state's parent, and then its
parent, and so on until the root is reached. For example, imagine a hierarchy
like this:
* created
* start <-- currentState
* inFlight
* updated
* inFlight
If we are currently in the `start` state, calling
`transitionTo('inFlight')` would transition to the `created.inFlight` state,
while calling `transitionTo('updated.inFlight')` would transition to
the `updated.inFlight` state.
Remember that *only events* should ever cause a state transition. You should
never call `transitionTo()` from outside a state's event handler. If you are
tempted to do so, create a new event and send that to the state manager.
#### Flags
Flags are Boolean values that can be used to introspect a record's current
state in a more user-friendly way than examining its state path. For example,
instead of doing this:
var statePath = record.get('stateManager.currentPath');
if (statePath === 'created.inFlight') {
doSomething();
}
You can say:
if (record.get('isNew') && record.get('isSaving')) {
doSomething();
}
If your state does not set a value for a given flag, the value will
be inherited from its parent (or the first place in the state hierarchy
where it is defined).
The current set of flags are defined below. If you want to add a new flag,
in addition to the area below, you will also need to declare it in the
`DS.Model` class.
#### Transitions
Transitions are like event handlers but are called automatically upon
entering or exiting a state. To implement a transition, just call a method
either `enter` or `exit`:
myState: DS.State.create({
// Gets called automatically when entering
// this state.
enter: function(manager) {
console.log("Entered myState");
}
})
Note that enter and exit events are called once per transition. If the
current state changes, but changes to another child state of the parent,
the transition event on the parent will not be triggered.
*/
var stateProperty = Ember.computed(function(key) {
var parent = get(this, 'parentState');
if (parent) {
return get(parent, key);
}
}).property();
var hasDefinedProperties = function(object) {
for (var name in object) {
if (object.hasOwnProperty(name) && object[name]) { return true; }
}
return false;
};
var didChangeData = function(manager) {
var record = get(manager, 'record');
record.materializeData();
};
var willSetProperty = function(manager, context) {
context.oldValue = get(get(manager, 'record'), context.name);
var change = DS.AttributeChange.createChange(context);
get(manager, 'record')._changesToSync[context.attributeName] = change;
};
var didSetProperty = function(manager, context) {
var change = get(manager, 'record')._changesToSync[context.attributeName];
change.value = get(get(manager, 'record'), context.name);
change.sync();
};
DS.State = Ember.State.extend({
isLoaded: stateProperty,
isReloading: stateProperty,
isDirty: stateProperty,
isSaving: stateProperty,
isDeleted: stateProperty,
isError: stateProperty,
isNew: stateProperty,
isValid: stateProperty,
// For states that are substates of a
// DirtyState (updated or created), it is
// useful to be able to determine which
// type of dirty state it is.
dirtyType: stateProperty
});
// Implementation notes:
//
// Each state has a boolean value for all of the following flags:
//
// * isLoaded: The record has a populated `data` property. When a
// record is loaded via `store.find`, `isLoaded` is false
// until the adapter sets it. When a record is created locally,
// its `isLoaded` property is always true.
// * isDirty: The record has local changes that have not yet been
// saved by the adapter. This includes records that have been
// created (but not yet saved) or deleted.
// * isSaving: The record's transaction has been committed, but
// the adapter has not yet acknowledged that the changes have
// been persisted to the backend.
// * isDeleted: The record was marked for deletion. When `isDeleted`
// is true and `isDirty` is true, the record is deleted locally
// but the deletion was not yet persisted. When `isSaving` is
// true, the change is in-flight. When both `isDirty` and
// `isSaving` are false, the change has persisted.
// * isError: The adapter reported that it was unable to save
// local changes to the backend. This may also result in the
// record having its `isValid` property become false if the
// adapter reported that server-side validations failed.
// * isNew: The record was created on the client and the adapter
// did not yet report that it was successfully saved.
// * isValid: No client-side validations have failed and the
// adapter did not report any server-side validation failures.
// The dirty state is a abstract state whose functionality is
// shared between the `created` and `updated` states.
//
// The deleted state shares the `isDirty` flag with the
// subclasses of `DirtyState`, but with a very different
// implementation.
//
// Dirty states have three child states:
//
// `uncommitted`: the store has not yet handed off the record
// to be saved.
// `inFlight`: the store has handed off the record to be saved,
// but the adapter has not yet acknowledged success.
// `invalid`: the record has invalid information and cannot be
// send to the adapter yet.
var DirtyState = DS.State.extend({
initialState: 'uncommitted',
// FLAGS
isDirty: true,
// SUBSTATES
// When a record first becomes dirty, it is `uncommitted`.
// This means that there are local pending changes, but they
// have not yet begun to be saved, and are not invalid.
uncommitted: DS.State.extend({
// TRANSITIONS
enter: function(manager) {
var dirtyType = get(this, 'dirtyType'),
record = get(manager, 'record');
record.withTransaction(function (t) {
t.recordBecameDirty(dirtyType, record);
});
},
// EVENTS
willSetProperty: willSetProperty,
didSetProperty: didSetProperty,
becomeDirty: Ember.K,
willCommit: function(manager) {
manager.transitionTo('inFlight');
},
becameClean: function(manager) {
var record = get(manager, 'record'),
dirtyType = get(this, 'dirtyType');
record.withTransaction(function(t) {
t.recordBecameClean(dirtyType, record);
});
manager.transitionTo('loaded.materializing');
},
becameInvalid: function(manager) {
var dirtyType = get(this, 'dirtyType'),
record = get(manager, 'record');
record.withTransaction(function (t) {
t.recordBecameInFlight(dirtyType, record);
});
manager.transitionTo('invalid');
},
rollback: function(manager) {
get(manager, 'record').rollback();
}
}),
// Once a record has been handed off to the adapter to be
// saved, it is in the 'in flight' state. Changes to the
// record cannot be made during this window.
inFlight: DS.State.extend({
// FLAGS
isSaving: true,
// TRANSITIONS
enter: function(manager) {
var dirtyType = get(this, 'dirtyType'),
record = get(manager, 'record');
record.becameInFlight();
record.withTransaction(function (t) {
t.recordBecameInFlight(dirtyType, record);
});
},
// EVENTS
didCommit: function(manager) {
var dirtyType = get(this, 'dirtyType'),
record = get(manager, 'record');
record.withTransaction(function(t) {
t.recordBecameClean('inflight', record);
});
manager.transitionTo('saved');
manager.send('invokeLifecycleCallbacks', dirtyType);
},
becameInvalid: function(manager, errors) {
var record = get(manager, 'record');
set(record, 'errors', errors);
manager.transitionTo('invalid');
manager.send('invokeLifecycleCallbacks');
},
becameError: function(manager) {
manager.transitionTo('error');
manager.send('invokeLifecycleCallbacks');
}
}),
// A record is in the `invalid` state when its client-side
// invalidations have failed, or if the adapter has indicated
// the the record failed server-side invalidations.
invalid: DS.State.extend({
// FLAGS
isValid: false,
exit: function(manager) {
var record = get(manager, 'record');
record.withTransaction(function (t) {
t.recordBecameClean('inflight', record);
});
},
// EVENTS
deleteRecord: function(manager) {
manager.transitionTo('deleted');
get(manager, 'record').clearRelationships();
},
willSetProperty: willSetProperty,
didSetProperty: function(manager, context) {
var record = get(manager, 'record'),
errors = get(record, 'errors'),
key = context.name;
set(errors, key, null);
if (!hasDefinedProperties(errors)) {
manager.send('becameValid');
}
didSetProperty(manager, context);
},
becomeDirty: Ember.K,
rollback: function(manager) {
manager.send('becameValid');
manager.send('rollback');
},
becameValid: function(manager) {
manager.transitionTo('uncommitted');
},
invokeLifecycleCallbacks: function(manager) {
var record = get(manager, 'record');
record.trigger('becameInvalid', record);
}
})
});
// The created and updated states are created outside the state
// chart so we can reopen their substates and add mixins as
// necessary.
var createdState = DirtyState.create({
dirtyType: 'created',
// FLAGS
isNew: true
});
var updatedState = DirtyState.create({
dirtyType: 'updated'
});
createdState.states.uncommitted.reopen({
deleteRecord: function(manager) {
var record = get(manager, 'record');
record.withTransaction(function(t) {
t.recordIsMoving('created', record);
});
record.clearRelationships();
manager.transitionTo('deleted.saved');
}
});
createdState.states.uncommitted.reopen({
rollback: function(manager) {
this._super(manager);
manager.transitionTo('deleted.saved');
}
});
updatedState.states.uncommitted.reopen({
deleteRecord: function(manager) {
var record = get(manager, 'record');
record.withTransaction(function(t) {
t.recordIsMoving('updated', record);
});
manager.transitionTo('deleted');
get(manager, 'record').clearRelationships();
}
});
var states = {
rootState: Ember.State.create({
// FLAGS
isLoaded: false,
isReloading: false,
isDirty: false,
isSaving: false,
isDeleted: false,
isError: false,
isNew: false,
isValid: true,
// SUBSTATES
// A record begins its lifecycle in the `empty` state.
// If its data will come from the adapter, it will
// transition into the `loading` state. Otherwise, if
// the record is being created on the client, it will
// transition into the `created` state.
empty: DS.State.create({
// EVENTS
loadingData: function(manager) {
manager.transitionTo('loading');
},
loadedData: function(manager) {
manager.transitionTo('loaded.created');
}
}),
// A record enters this state when the store askes
// the adapter for its data. It remains in this state
// until the adapter provides the requested data.
//
// Usually, this process is asynchronous, using an
// XHR to retrieve the data.
loading: DS.State.create({
// EVENTS
loadedData: didChangeData,
materializingData: function(manager) {
manager.transitionTo('loaded.materializing.firstTime');
}
}),
// A record enters this state when its data is populated.
// Most of a record's lifecycle is spent inside substates
// of the `loaded` state.
loaded: DS.State.create({
initialState: 'saved',
// FLAGS
isLoaded: true,
// SUBSTATES
materializing: DS.State.create({
// FLAGS
isLoaded: false,
// EVENTS
willSetProperty: Ember.K,
didSetProperty: Ember.K,
didChangeData: didChangeData,
finishedMaterializing: function(manager) {
manager.transitionTo('loaded.saved');
},
// SUBSTATES
firstTime: DS.State.create({
exit: function(manager) {
var record = get(manager, 'record');
once(function() {
record.trigger('didLoad');
});
}
})
}),
reloading: DS.State.create({
// FLAGS
isReloading: true,
// TRANSITIONS
enter: function(manager) {
var record = get(manager, 'record'),
store = get(record, 'store');
store.reloadRecord(record);
},
exit: function(manager) {
var record = get(manager, 'record');
once(record, 'trigger', 'didReload');
},
// EVENTS
loadedData: didChangeData,
materializingData: function(manager) {
manager.transitionTo('loaded.materializing');
}
}),
// If there are no local changes to a record, it remains
// in the `saved` state.
saved: DS.State.create({
// EVENTS
willSetProperty: willSetProperty,
didSetProperty: didSetProperty,
didChangeData: didChangeData,
loadedData: didChangeData,
reloadRecord: function(manager) {
manager.transitionTo('loaded.reloading');
},
materializingData: function(manager) {
manager.transitionTo('loaded.materializing');
},
becomeDirty: function(manager) {
manager.transitionTo('updated');
},
deleteRecord: function(manager) {
manager.transitionTo('deleted');
get(manager, 'record').clearRelationships();
},
unloadRecord: function(manager) {
manager.transitionTo('deleted.saved');
get(manager, 'record').clearRelationships();
},
invokeLifecycleCallbacks: function(manager, dirtyType) {
var record = get(manager, 'record');
if (dirtyType === 'created') {
record.trigger('didCreate', record);
} else {
record.trigger('didUpdate', record);
}
}
}),
// A record is in this state after it has been locally
// created but before the adapter has indicated that
// it has been saved.
created: createdState,
// A record is in this state if it has already been
// saved to the server, but there are new local changes
// that have not yet been saved.
updated: updatedState
}),
// A record is in this state if it was deleted from the store.
deleted: DS.State.create({
initialState: 'uncommitted',
dirtyType: 'deleted',
// FLAGS
isDeleted: true,
isLoaded: true,
isDirty: true,
// TRANSITIONS
setup: function(manager) {
var record = get(manager, 'record'),
store = get(record, 'store');
store.removeFromRecordArrays(record);
},
// SUBSTATES
// When a record is deleted, it enters the `start`
// state. It will exit this state when the record's
// transaction starts to commit.
uncommitted: DS.State.create({
// TRANSITIONS
enter: function(manager) {
var record = get(manager, 'record');
record.withTransaction(function(t) {
t.recordBecameDirty('deleted', record);
});
},
// EVENTS
willCommit: function(manager) {
manager.transitionTo('inFlight');
},
rollback: function(manager) {
get(manager, 'record').rollback();
},
becomeDirty: Ember.K,
becameClean: function(manager) {
var record = get(manager, 'record');
record.withTransaction(function(t) {
t.recordBecameClean('deleted', record);
});
manager.transitionTo('loaded.materializing');
}
}),
// After a record's transaction is committing, but
// before the adapter indicates that the deletion
// has saved to the server, a record is in the
// `inFlight` substate of `deleted`.
inFlight: DS.State.create({
// FLAGS
isSaving: true,
// TRANSITIONS
enter: function(manager) {
var record = get(manager, 'record');
record.becameInFlight();
record.withTransaction(function (t) {
t.recordBecameInFlight('deleted', record);
});
},
// EVENTS
didCommit: function(manager) {
var record = get(manager, 'record');
record.withTransaction(function(t) {
t.recordBecameClean('inflight', record);
});
manager.transitionTo('saved');
manager.send('invokeLifecycleCallbacks');
}
}),
// Once the adapter indicates that the deletion has
// been saved, the record enters the `saved` substate
// of `deleted`.
saved: DS.State.create({
// FLAGS
isDirty: false,
setup: function(manager) {
var record = get(manager, 'record'),
store = get(record, 'store');
store.dematerializeRecord(record);
},
invokeLifecycleCallbacks: function(manager) {
var record = get(manager, 'record');
record.trigger('didDelete', record);
}
})
}),
// If the adapter indicates that there was an unknown
// error saving a record, the record enters the `error`
// state.
error: DS.State.create({
isError: true,
// EVENTS
invokeLifecycleCallbacks: function(manager) {
var record = get(manager, 'record');
record.trigger('becameError', record);
}
})
})
};
DS.StateManager = Ember.StateManager.extend({
record: null,
initialState: 'rootState',
states: states,
unhandledEvent: function(manager, originalEvent) {
var record = manager.get('record'),
contexts = [].slice.call(arguments, 2),
errorMessage;
errorMessage = "Attempted to handle event `" + originalEvent + "` ";
errorMessage += "on " + record.toString() + " while in state ";
errorMessage += get(manager, 'currentState.path') + ". Called with ";
errorMessage += arrayMap.call(contexts, function(context){
return Ember.inspect(context);
}).join(', ');
throw new Ember.Error(errorMessage);
}
});
})();
(function() {
var LoadPromise = DS.LoadPromise; // system/mixins/load_promise
var get = Ember.get, set = Ember.set, map = Ember.EnumerableUtils.map;
var retrieveFromCurrentState = Ember.computed(function(key, value) {
return get(get(this, 'stateManager.currentState'), key);
}).property('stateManager.currentState').readOnly();
DS.Model = Ember.Object.extend(Ember.Evented, LoadPromise, {
isLoaded: retrieveFromCurrentState,
isReloading: retrieveFromCurrentState,
isDirty: retrieveFromCurrentState,
isSaving: retrieveFromCurrentState,
isDeleted: retrieveFromCurrentState,
isError: retrieveFromCurrentState,
isNew: retrieveFromCurrentState,
isValid: retrieveFromCurrentState,
clientId: null,
id: null,
transaction: null,
stateManager: null,
errors: null,
/**
Create a JSON representation of the record, using the serialization
strategy of the store's adapter.
Available options:
* `includeId`: `true` if the record's ID should be included in the
JSON representation.
@param {Object} options
@returns {Object} an object whose values are primitive JSON values only
*/
serialize: function(options) {
var store = get(this, 'store');
return store.serialize(this, options);
},
toJSON: function(options) {
var serializer = DS.JSONSerializer.create();
return serializer.serialize(this, options);
},
didLoad: Ember.K,
didReload: Ember.K,
didUpdate: Ember.K,
didCreate: Ember.K,
didDelete: Ember.K,
becameInvalid: Ember.K,
becameError: Ember.K,
data: Ember.computed(function() {
if (!this._data) {
this.materializeData();
}
return this._data;
}).property(),
materializeData: function() {
this.send('materializingData');
get(this, 'store').materializeData(this);
this.suspendRelationshipObservers(function() {
this.notifyPropertyChange('data');
});
},
_data: null,
init: function() {
this._super();
var stateManager = DS.StateManager.create({ record: this });
set(this, 'stateManager', stateManager);
this._setup();
stateManager.goToState('empty');
},
_setup: function() {
this._relationshipChanges = {};
this._changesToSync = {};
},
send: function(name, context) {
return get(this, 'stateManager').send(name, context);
},
withTransaction: function(fn) {
var transaction = get(this, 'transaction');
if (transaction) { fn(transaction); }
},
loadingData: function() {
this.send('loadingData');
},
loadedData: function() {
this.send('loadedData');
},
didChangeData: function() {
this.send('didChangeData');
},
setProperty: function(key, value, oldValue) {
this.send('setProperty', { key: key, value: value, oldValue: oldValue });
},
/**
Reload the record from the adapter.
This will only work if the record has already finished loading
and has not yet been modified (`isLoaded` but not `isDirty`,
or `isSaving`).
*/
reload: function() {
this.send('reloadRecord');
},
deleteRecord: function() {
this.send('deleteRecord');
},
unloadRecord: function() {
Ember.assert("You can only unload a loaded, non-dirty record.", !get(this, 'isDirty'));
this.send('unloadRecord');
},
clearRelationships: function() {
this.eachRelationship(function(name, relationship) {
// if the relationship is unmaterialized, move on
if (this.cacheFor(name) === undefined) { return; }
if (relationship.kind === 'belongsTo') {
set(this, name, null);
} else if (relationship.kind === 'hasMany') {
get(this, name).clear();
}
}, this);
},
updateRecordArrays: function() {
var store = get(this, 'store');
if (store) {
store.dataWasUpdated(this.constructor, get(this, '_reference'), this);
}
},
/**
If the adapter did not return a hash in response to a commit,
merge the changed attributes and relationships into the existing
saved data.
*/
adapterDidCommit: function() {
var attributes = get(this, 'data').attributes;
get(this.constructor, 'attributes').forEach(function(name, meta) {
attributes[name] = get(this, name);
}, this);
this.send('didCommit');
this.updateRecordArraysLater();
},
adapterDidDirty: function() {
this.send('becomeDirty');
this.updateRecordArraysLater();
},
dataDidChange: Ember.observer(function() {
var relationships = get(this.constructor, 'relationshipsByName');
this.updateRecordArraysLater();
relationships.forEach(function(name, relationship) {
if (relationship.kind === 'hasMany') {
this.hasManyDidChange(relationship.key);
}
}, this);
this.send('finishedMaterializing');
}, 'data'),
hasManyDidChange: function(key) {
var cachedValue = this.cacheFor(key);
if (cachedValue) {
var type = get(this.constructor, 'relationshipsByName').get(key).type;
var store = get(this, 'store');
var ids = this._data.hasMany[key] || [];
var references = map(ids, function(id) {
// if it was already a reference, return the reference
if (typeof id === 'object') { return id; }
return store.referenceForId(type, id);
});
set(cachedValue, 'content', Ember.A(references));
}
},
updateRecordArraysLater: function() {
Ember.run.once(this, this.updateRecordArrays);
},
setupData: function(prematerialized) {
this._data = {
attributes: {},
belongsTo: {},
hasMany: {},
id: null
};
},
materializeId: function(id) {
set(this, 'id', id);
},
materializeAttributes: function(attributes) {
Ember.assert("Must pass a hash of attributes to materializeAttributes", !!attributes);
this._data.attributes = attributes;
},
materializeAttribute: function(name, value) {
this._data.attributes[name] = value;
},
materializeHasMany: function(name, ids) {
this._data.hasMany[name] = ids;
},
materializeBelongsTo: function(name, id) {
this._data.belongsTo[name] = id;
},
rollback: function() {
this._setup();
this.send('becameClean');
this.suspendRelationshipObservers(function() {
this.notifyPropertyChange('data');
});
},
toStringExtension: function() {
return get(this, 'id');
},
/**
@private
The goal of this method is to temporarily disable specific observers
that take action in response to application changes.
This allows the system to make changes (such as materialization and
rollback) that should not trigger secondary behavior (such as setting an
inverse relationship or marking records as dirty).
The specific implementation will likely change as Ember proper provides
better infrastructure for suspending groups of observers, and if Array
observation becomes more unified with regular observers.
*/
suspendRelationshipObservers: function(callback, binding) {
var observers = get(this.constructor, 'relationshipNames').belongsTo;
var self = this;
try {
this._suspendedRelationships = true;
Ember._suspendObservers(self, observers, null, 'belongsToDidChange', function() {
Ember._suspendBeforeObservers(self, observers, null, 'belongsToWillChange', function() {
callback.call(binding || self);
});
});
} finally {
this._suspendedRelationships = false;
}
},
becameInFlight: function() {
},
// FOR USE BY THE BASIC ADAPTER
save: function() {
this.get('store').scheduleSave(this);
},
// FOR USE DURING COMMIT PROCESS
adapterDidUpdateAttribute: function(attributeName, value) {
// If a value is passed in, update the internal attributes and clear
// the attribute cache so it picks up the new value. Otherwise,
// collapse the current value into the internal attributes because
// the adapter has acknowledged it.
if (value !== undefined) {
get(this, 'data.attributes')[attributeName] = value;
this.notifyPropertyChange(attributeName);
} else {
value = get(this, attributeName);
get(this, 'data.attributes')[attributeName] = value;
}
this.updateRecordArraysLater();
},
_reference: Ember.computed(function() {
return get(this, 'store').referenceForClientId(get(this, 'clientId'));
}),
adapterDidInvalidate: function(errors) {
this.send('becameInvalid', errors);
},
adapterDidError: function() {
this.send('becameError');
},
/**
@private
Override the default event firing from Ember.Evented to
also call methods with the given name.
*/
trigger: function(name) {
Ember.tryInvoke(this, name, [].slice.call(arguments, 1));
this._super.apply(this, arguments);
}
});
// Helper function to generate store aliases.
// This returns a function that invokes the named alias
// on the default store, but injects the class as the
// first parameter.
var storeAlias = function(methodName) {
return function() {
var store = get(DS, 'defaultStore'),
args = [].slice.call(arguments);
args.unshift(this);
Ember.assert("Your application does not have a 'Store' property defined. Attempts to call '" + methodName + "' on model classes will fail. Please provide one as with 'YourAppName.Store = DS.Store.extend()'", !!store);
return store[methodName].apply(store, args);
};
};
DS.Model.reopenClass({
isLoaded: storeAlias('recordIsLoaded'),
find: storeAlias('find'),
all: storeAlias('all'),
query: storeAlias('findQuery'),
filter: storeAlias('filter'),
_create: DS.Model.create,
create: function() {
throw new Ember.Error("You should not call `create` on a model. Instead, call `createRecord` with the attributes you would like to set.");
},
createRecord: storeAlias('createRecord')
});
})();
(function() {
var get = Ember.get;
DS.Model.reopenClass({
attributes: Ember.computed(function() {
var map = Ember.Map.create();
this.eachComputedProperty(function(name, meta) {
if (meta.isAttribute) {
Ember.assert("You may not set `id` as an attribute on your model. Please remove any lines that look like: `id: DS.attr('<type>')` from " + this.toString(), name !== 'id');
meta.name = name;
map.set(name, meta);
}
});
return map;
})
});
var AttributeChange = DS.AttributeChange = function(options) {
this.reference = options.reference;
this.store = options.store;
this.name = options.name;
this.oldValue = options.oldValue;
};
AttributeChange.createChange = function(options) {
return new AttributeChange(options);
};
AttributeChange.prototype = {
sync: function() {
this.store.recordAttributeDidChange(this.reference, this.name, this.value, this.oldValue);
// TODO: Use this object in the commit process
this.destroy();
},
destroy: function() {
delete this.store.recordForReference(this.reference)._changesToSync[this.name];
}
};
DS.Model.reopen({
eachAttribute: function(callback, binding) {
get(this.constructor, 'attributes').forEach(function(name, meta) {
callback.call(binding, name, meta);
}, binding);
},
attributeWillChange: Ember.beforeObserver(function(record, key) {
var reference = get(record, '_reference'),
store = get(record, 'store');
record.send('willSetProperty', { reference: reference, store: store, name: key });
}),
attributeDidChange: Ember.observer(function(record, key) {
record.send('didSetProperty', { name: key });
})
});
function getAttr(record, options, key) {
var attributes = get(record, 'data').attributes;
var value = attributes[key];
if (value === undefined) {
value = options.defaultValue;
}
return value;
}
DS.attr = function(type, options) {
options = options || {};
var meta = {
type: type,
isAttribute: true,
options: options
};
return Ember.computed(function(key, value, oldValue) {
if (arguments.length > 1) {
Ember.assert("You may not set `id` as an attribute on your model. Please remove any lines that look like: `id: DS.attr('<type>')` from " + this.constructor.toString(), key !== 'id');
} else {
value = getAttr(this, options, key);
}
return value;
// `data` is never set directly. However, it may be
// invalidated from the state manager's setData
// event.
}).property('data').meta(meta);
};
})();
(function() {
})();
(function() {
var get = Ember.get, set = Ember.set,
none = Ember.isNone;
DS.belongsTo = function(type, options) {
Ember.assert("The first argument DS.belongsTo must be a model type or string, like DS.belongsTo(App.Person)", !!type && (typeof type === 'string' || DS.Model.detect(type)));
options = options || {};
var meta = { type: type, isRelationship: true, options: options, kind: 'belongsTo' };
return Ember.computed(function(key, value) {
if (arguments.length === 2) {
return value === undefined ? null : value;
}
var data = get(this, 'data').belongsTo,
store = get(this, 'store'), id;
if (typeof type === 'string') {
type = get(this, type, false) || get(Ember.lookup, type);
}
id = data[key];
if(!id) {
return null;
} else if (typeof id === 'object') {
return store.recordForReference(id);
} else {
return store.find(type, id);
}
}).property('data').meta(meta);
};
/**
These observers observe all `belongsTo` relationships on the record. See
`relationships/ext` to see how these observers get their dependencies.
*/
DS.Model.reopen({
/** @private */
belongsToWillChange: Ember.beforeObserver(function(record, key) {
if (get(record, 'isLoaded')) {
var oldParent = get(record, key);
var childReference = get(record, '_reference'),
store = get(record, 'store');
if (oldParent){
var change = DS.RelationshipChange.createChange(childReference, get(oldParent, '_reference'), store, { key: key, kind:"belongsTo", changeType: "remove" });
change.sync();
this._changesToSync[key] = change;
}
}
}),
/** @private */
belongsToDidChange: Ember.immediateObserver(function(record, key) {
if (get(record, 'isLoaded')) {
var newParent = get(record, key);
if(newParent){
var childReference = get(record, '_reference'),
store = get(record, 'store');
var change = DS.RelationshipChange.createChange(childReference, get(newParent, '_reference'), store, { key: key, kind:"belongsTo", changeType: "add" });
change.sync();
if(this._changesToSync[key]){
DS.OneToManyChange.ensureSameTransaction([change, this._changesToSync[key]], store);
}
}
}
delete this._changesToSync[key];
})
});
})();
(function() {
var get = Ember.get, set = Ember.set;
var hasRelationship = function(type, options) {
options = options || {};
var meta = { type: type, isRelationship: true, options: options, kind: 'hasMany' };
return Ember.computed(function(key, value) {
var data = get(this, 'data').hasMany,
store = get(this, 'store'),
ids, relationship;
if (typeof type === 'string') {
type = get(this, type, false) || get(Ember.lookup, type);
}
ids = data[key];
relationship = store.findMany(type, ids, this, meta);
set(relationship, 'owner', this);
set(relationship, 'name', key);
return relationship;
}).property().meta(meta);
};
DS.hasMany = function(type, options) {
Ember.assert("The type passed to DS.hasMany must be defined", !!type);
return hasRelationship(type, options);
};
})();
(function() {
var get = Ember.get, set = Ember.set;
/**
@private
This file defines several extensions to the base `DS.Model` class that
add support for one-to-many relationships.
*/
DS.Model.reopen({
// This Ember.js hook allows an object to be notified when a property
// is defined.
//
// In this case, we use it to be notified when an Ember Data user defines a
// belongs-to relationship. In that case, we need to set up observers for
// each one, allowing us to track relationship changes and automatically
// reflect changes in the inverse has-many array.
//
// This hook passes the class being set up, as well as the key and value
// being defined. So, for example, when the user does this:
//
// DS.Model.extend({
// parent: DS.belongsTo(App.User)
// });
//
// This hook would be called with "parent" as the key and the computed
// property returned by `DS.belongsTo` as the value.
didDefineProperty: function(proto, key, value) {
// Check if the value being set is a computed property.
if (value instanceof Ember.Descriptor) {
// If it is, get the metadata for the relationship. This is
// populated by the `DS.belongsTo` helper when it is creating
// the computed property.
var meta = value.meta();
if (meta.isRelationship && meta.kind === 'belongsTo') {
Ember.addObserver(proto, key, null, 'belongsToDidChange');
Ember.addBeforeObserver(proto, key, null, 'belongsToWillChange');
}
if (meta.isAttribute) {
Ember.addObserver(proto, key, null, 'attributeDidChange');
Ember.addBeforeObserver(proto, key, null, 'attributeWillChange');
}
meta.parentType = proto.constructor;
}
}
});
/**
These DS.Model extensions add class methods that provide relationship
introspection abilities about relationships.
A note about the computed properties contained here:
**These properties are effectively sealed once called for the first time.**
To avoid repeatedly doing expensive iteration over a model's fields, these
values are computed once and then cached for the remainder of the runtime of
your application.
If your application needs to modify a class after its initial definition
(for example, using `reopen()` to add additional attributes), make sure you
do it before using your model with the store, which uses these properties
extensively.
*/
DS.Model.reopenClass({
/**
For a given relationship name, returns the model type of the relationship.
For example, if you define a model like this:
App.Post = DS.Model.extend({
comments: DS.hasMany(App.Comment)
});
Calling `App.Post.typeForRelationship('comments')` will return `App.Comment`.
@param {String} name the name of the relationship
@return {subclass of DS.Model} the type of the relationship, or undefined
*/
typeForRelationship: function(name) {
var relationship = get(this, 'relationshipsByName').get(name);
return relationship && relationship.type;
},
/**
The model's relationships as a map, keyed on the type of the
relationship. The value of each entry is an array containing a descriptor
for each relationship with that type, describing the name of the relationship
as well as the type.
For example, given the following model definition:
App.Blog = DS.Model.extend({
users: DS.hasMany(App.User),
owner: DS.belongsTo(App.User),
posts: DS.hasMany(App.Post)
});
This computed property would return a map describing these
relationships, like this:
var relationships = Ember.get(App.Blog, 'relationships');
associatons.get(App.User);
//=> [ { name: 'users', kind: 'hasMany' },
// { name: 'owner', kind: 'belongsTo' } ]
relationships.get(App.Post);
//=> [ { name: 'posts', kind: 'hasMany' } ]
@type Ember.Map
@readOnly
*/
relationships: Ember.computed(function() {
var map = new Ember.MapWithDefault({
defaultValue: function() { return []; }
});
// Loop through each computed property on the class
this.eachComputedProperty(function(name, meta) {
// If the computed property is a relationship, add
// it to the map.
if (meta.isRelationship) {
if (typeof meta.type === 'string') {
meta.type = Ember.get(Ember.lookup, meta.type);
}
var relationshipsForType = map.get(meta.type);
relationshipsForType.push({ name: name, kind: meta.kind });
}
});
return map;
}),
/**
A hash containing lists of the model's relationships, grouped
by the relationship kind. For example, given a model with this
definition:
App.Blog = DS.Model.extend({
users: DS.hasMany(App.User),
owner: DS.belongsTo(App.User),
posts: DS.hasMany(App.Post)
});
This property would contain the following:
var relationshipNames = Ember.get(App.Blog, 'relationshipNames');
relationshipNames.hasMany;
//=> ['users', 'posts']
relationshipNames.belongsTo;
//=> ['owner']
@type Object
@readOnly
*/
relationshipNames: Ember.computed(function() {
var names = { hasMany: [], belongsTo: [] };
this.eachComputedProperty(function(name, meta) {
if (meta.isRelationship) {
names[meta.kind].push(name);
}
});
return names;
}),
/**
An array of types directly related to a model. Each type will be
included once, regardless of the number of relationships it has with
the model.
For example, given a model with this definition:
App.Blog = DS.Model.extend({
users: DS.hasMany(App.User),
owner: DS.belongsTo(App.User),
posts: DS.hasMany(App.Post)
});
This property would contain the following:
var relatedTypes = Ember.get(App.Blog, 'relatedTypes');
//=> [ App.User, App.Post ]
@type Ember.Array
@readOnly
*/
relatedTypes: Ember.computed(function() {
var type,
types = Ember.A([]);
// Loop through each computed property on the class,
// and create an array of the unique types involved
// in relationships
this.eachComputedProperty(function(name, meta) {
if (meta.isRelationship) {
type = meta.type;
if (typeof type === 'string') {
type = get(this, type, false) || get(Ember.lookup, type);
}
if (!types.contains(type)) {
Ember.assert("Trying to sideload " + name + " on " + this.toString() + " but the type doesn't exist.", !!type);
types.push(type);
}
}
});
return types;
}),
/**
A map whose keys are the relationships of a model and whose values are
relationship descriptors.
For example, given a model with this
definition:
App.Blog = DS.Model.extend({
users: DS.hasMany(App.User),
owner: DS.belongsTo(App.User),
posts: DS.hasMany(App.Post)
});
This property would contain the following:
var relationshipsByName = Ember.get(App.Blog, 'relationshipsByName');
relationshipsByName.get('users');
//=> { key: 'users', kind: 'hasMany', type: App.User }
relationshipsByName.get('owner');
//=> { key: 'owner', kind: 'belongsTo', type: App.User }
@type Ember.Map
@readOnly
*/
relationshipsByName: Ember.computed(function() {
var map = Ember.Map.create(), type;
this.eachComputedProperty(function(name, meta) {
if (meta.isRelationship) {
meta.key = name;
type = meta.type;
if (typeof type === 'string') {
type = get(this, type, false) || get(Ember.lookup, type);
meta.type = type;
}
map.set(name, meta);
}
});
return map;
}),
/**
A map whose keys are the fields of the model and whose values are strings
describing the kind of the field. A model's fields are the union of all of its
attributes and relationships.
For example:
App.Blog = DS.Model.extend({
users: DS.hasMany(App.User),
owner: DS.belongsTo(App.User),
posts: DS.hasMany(App.Post),
title: DS.attr('string')
});
var fields = Ember.get(App.Blog, 'fields');
fields.forEach(function(field, kind) {
console.log(field, kind);
});
// prints:
// users, hasMany
// owner, belongsTo
// posts, hasMany
// title, attribute
@type Ember.Map
@readOnly
*/
fields: Ember.computed(function() {
var map = Ember.Map.create(), type;
this.eachComputedProperty(function(name, meta) {
if (meta.isRelationship) {
map.set(name, meta.kind);
} else if (meta.isAttribute) {
map.set(name, 'attribute');
}
});
return map;
}),
/**
Given a callback, iterates over each of the relationships in the model,
invoking the callback with the name of each relationship and its relationship
descriptor.
@param {Function} callback the callback to invoke
@param {any} binding the value to which the callback's `this` should be bound
*/
eachRelationship: function(callback, binding) {
get(this, 'relationshipsByName').forEach(function(name, relationship) {
callback.call(binding, name, relationship);
});
},
/**
Given a callback, iterates over each of the types related to a model,
invoking the callback with the related type's class. Each type will be
returned just once, regardless of how many different relationships it has
with a model.
@param {Function} callback the callback to invoke
@param {any} binding the value to which the callback's `this` should be bound
*/
eachRelatedType: function(callback, binding) {
get(this, 'relatedTypes').forEach(function(type) {
callback.call(binding, type);
});
}
});
DS.Model.reopen({
/**
Given a callback, iterates over each of the relationships in the model,
invoking the callback with the name of each relationship and its relationship
descriptor.
@param {Function} callback the callback to invoke
@param {any} binding the value to which the callback's `this` should be bound
*/
eachRelationship: function(callback, binding) {
this.constructor.eachRelationship(callback, binding);
}
});
/**
@private
Helper method to look up the name of the inverse of a relationship.
In a has-many relationship, there are always two sides: the `belongsTo` side
and the `hasMany` side. When one side changes, the other side should be updated
automatically.
Given a model, the model of the inverse, and the kind of the relationship, this
helper returns the name of the relationship on the inverse.
For example, imagine the following two associated models:
App.Post = DS.Model.extend({
comments: DS.hasMany('App.Comment')
});
App.Comment = DS.Model.extend({
post: DS.belongsTo('App.Post')
});
If the `post` property of a `Comment` was modified, Ember Data would invoke
this helper like this:
DS._inverseNameFor(App.Comment, App.Post, 'hasMany');
//=> 'comments'
Ember Data uses the name of the relationship returned to reflect the changed
relationship on the other side.
*/
DS._inverseRelationshipFor = function(modelType, inverseModelType) {
var relationshipMap = get(modelType, 'relationships'),
possibleRelationships = relationshipMap.get(inverseModelType),
possible, actual, oldValue;
if (!possibleRelationships) { return; }
if (possibleRelationships.length > 1) { return; }
return possibleRelationships[0];
};
/**
@private
Given a model and a relationship name, returns the model type of
the named relationship.
App.Post = DS.Model.extend({
comments: DS.hasMany('App.Comment')
});
DS._inverseTypeFor(App.Post, 'comments');
//=> App.Comment
@param {DS.Model class} modelType
@param {String} relationshipName
@return {DS.Model class}
*/
DS._inverseTypeFor = function(modelType, relationshipName) {
var relationships = get(modelType, 'relationshipsByName'),
relationship = relationships.get(relationshipName);
if (relationship) { return relationship.type; }
};
})();
(function() {
var get = Ember.get, set = Ember.set;
var forEach = Ember.EnumerableUtils.forEach;
DS.RelationshipChange = function(options) {
this.parentReference = options.parentReference;
this.childReference = options.childReference;
this.firstRecordReference = options.firstRecordReference;
this.firstRecordKind = options.firstRecordKind;
this.firstRecordName = options.firstRecordName;
this.secondRecordReference = options.secondRecordReference;
this.secondRecordKind = options.secondRecordKind;
this.secondRecordName = options.secondRecordName;
this.store = options.store;
this.committed = {};
this.changeType = options.changeType;
};
DS.RelationshipChangeAdd = function(options){
DS.RelationshipChange.call(this, options);
};
DS.RelationshipChangeRemove = function(options){
DS.RelationshipChange.call(this, options);
};
/** @private */
DS.RelationshipChange.create = function(options) {
return new DS.RelationshipChange(options);
};
/** @private */
DS.RelationshipChangeAdd.create = function(options) {
return new DS.RelationshipChangeAdd(options);
};
/** @private */
DS.RelationshipChangeRemove.create = function(options) {
return new DS.RelationshipChangeRemove(options);
};
DS.OneToManyChange = {};
DS.OneToNoneChange = {};
DS.ManyToNoneChange = {};
DS.OneToOneChange = {};
DS.ManyToManyChange = {};
DS.RelationshipChange._createChange = function(options){
if(options.changeType === "add"){
return DS.RelationshipChangeAdd.create(options);
}
if(options.changeType === "remove"){
return DS.RelationshipChangeRemove.create(options);
}
};
DS.RelationshipChange.determineRelationshipType = function(recordType, knownSide){
var knownKey = knownSide.key, key, type, otherContainerType,assoc;
var knownContainerType = knownSide.kind;
var options = recordType.metaForProperty(knownKey).options;
var otherType = DS._inverseTypeFor(recordType, knownKey);
if(options.inverse){
key = options.inverse;
otherContainerType = get(otherType, 'relationshipsByName').get(key).kind;
}
else if(assoc = DS._inverseRelationshipFor(otherType, recordType)){
key = assoc.name;
otherContainerType = assoc.kind;
}
if(!key){
return knownContainerType === "belongsTo" ? "oneToNone" : "manyToNone";
}
else{
if(otherContainerType === "belongsTo"){
return knownContainerType === "belongsTo" ? "oneToOne" : "manyToOne";
}
else{
return knownContainerType === "belongsTo" ? "oneToMany" : "manyToMany";
}
}
};
DS.RelationshipChange.createChange = function(firstRecordReference, secondRecordReference, store, options){
// Get the type of the child based on the child's client ID
var firstRecordType = firstRecordReference.type, key, changeType;
changeType = DS.RelationshipChange.determineRelationshipType(firstRecordType, options);
if (changeType === "oneToMany"){
return DS.OneToManyChange.createChange(firstRecordReference, secondRecordReference, store, options);
}
else if (changeType === "manyToOne"){
return DS.OneToManyChange.createChange(secondRecordReference, firstRecordReference, store, options);
}
else if (changeType === "oneToNone"){
return DS.OneToNoneChange.createChange(firstRecordReference, secondRecordReference, store, options);
}
else if (changeType === "manyToNone"){
return DS.ManyToNoneChange.createChange(firstRecordReference, secondRecordReference, store, options);
}
else if (changeType === "oneToOne"){
return DS.OneToOneChange.createChange(firstRecordReference, secondRecordReference, store, options);
}
else if (changeType === "manyToMany"){
return DS.ManyToManyChange.createChange(firstRecordReference, secondRecordReference, store, options);
}
};
/** @private */
DS.OneToNoneChange.createChange = function(childReference, parentReference, store, options) {
var key = options.key;
var change = DS.RelationshipChange._createChange({
parentReference: parentReference,
childReference: childReference,
firstRecordReference: childReference,
store: store,
changeType: options.changeType,
firstRecordName: key,
firstRecordKind: "belongsTo"
});
store.addRelationshipChangeFor(childReference, key, parentReference, null, change);
return change;
};
/** @private */
DS.ManyToNoneChange.createChange = function(childReference, parentReference, store, options) {
var key = options.key;
var change = DS.RelationshipChange._createChange({
parentReference: childReference,
childReference: parentReference,
secondRecordReference: childReference,
store: store,
changeType: options.changeType,
secondRecordName: options.key,
secondRecordKind: "hasMany"
});
store.addRelationshipChangeFor(childReference, key, parentReference, null, change);
return change;
};
/** @private */
DS.ManyToManyChange.createChange = function(childReference, parentReference, store, options) {
// Get the type of the child based on the child's client ID
var childType = childReference.type, key;
// If the name of the belongsTo side of the relationship is specified,
// use that
// If the type of the parent is specified, look it up on the child's type
// definition.
key = options.key;
var change = DS.RelationshipChange._createChange({
parentReference: parentReference,
childReference: childReference,
firstRecordReference: childReference,
secondRecordReference: parentReference,
firstRecordKind: "hasMany",
secondRecordKind: "hasMany",
store: store,
changeType: options.changeType,
firstRecordName: key
});
store.addRelationshipChangeFor(childReference, key, parentReference, null, change);
return change;
};
/** @private */
DS.OneToOneChange.createChange = function(childReference, parentReference, store, options) {
// Get the type of the child based on the child's client ID
var childType = childReference.type, key;
// If the name of the belongsTo side of the relationship is specified,
// use that
// If the type of the parent is specified, look it up on the child's type
// definition.
if (options.parentType) {
key = inverseBelongsToName(options.parentType, childType, options.key);
//DS.OneToOneChange.maintainInvariant( options, store, childReference, key );
} else if (options.key) {
key = options.key;
} else {
Ember.assert("You must pass either a parentType or belongsToName option to OneToManyChange.forChildAndParent", false);
}
var change = DS.RelationshipChange._createChange({
parentReference: parentReference,
childReference: childReference,
firstRecordReference: childReference,
secondRecordReference: parentReference,
firstRecordKind: "belongsTo",
secondRecordKind: "belongsTo",
store: store,
changeType: options.changeType,
firstRecordName: key
});
store.addRelationshipChangeFor(childReference, key, parentReference, null, change);
return change;
};
DS.OneToOneChange.maintainInvariant = function(options, store, childReference, key){
if (options.changeType === "add" && store.recordIsMaterialized(childReference)) {
var child = store.recordForReference(childReference);
var oldParent = get(child, key);
if (oldParent){
var correspondingChange = DS.OneToOneChange.createChange(childReference, oldParent.get('_reference'), store, {
parentType: options.parentType,
hasManyName: options.hasManyName,
changeType: "remove",
key: options.key
});
store.addRelationshipChangeFor(childReference, key, options.parentReference , null, correspondingChange);
correspondingChange.sync();
}
}
};
/** @private */
DS.OneToManyChange.createChange = function(childReference, parentReference, store, options) {
// Get the type of the child based on the child's client ID
var childType = childReference.type, key;
// If the name of the belongsTo side of the relationship is specified,
// use that
// If the type of the parent is specified, look it up on the child's type
// definition.
if (options.parentType) {
key = inverseBelongsToName(options.parentType, childType, options.key);
DS.OneToManyChange.maintainInvariant( options, store, childReference, key );
} else if (options.key) {
key = options.key;
} else {
Ember.assert("You must pass either a parentType or belongsToName option to OneToManyChange.forChildAndParent", false);
}
var change = DS.RelationshipChange._createChange({
parentReference: parentReference,
childReference: childReference,
firstRecordReference: childReference,
secondRecordReference: parentReference,
firstRecordKind: "belongsTo",
secondRecordKind: "hasMany",
store: store,
changeType: options.changeType,
firstRecordName: key
});
store.addRelationshipChangeFor(childReference, key, parentReference, null, change);
return change;
};
DS.OneToManyChange.maintainInvariant = function(options, store, childReference, key){
if (options.changeType === "add" && store.recordIsMaterialized(childReference)) {
var child = store.recordForReference(childReference);
var oldParent = get(child, key);
if (oldParent){
var correspondingChange = DS.OneToManyChange.createChange(childReference, oldParent.get('_reference'), store, {
parentType: options.parentType,
hasManyName: options.hasManyName,
changeType: "remove",
key: options.key
});
store.addRelationshipChangeFor(childReference, key, options.parentReference , null, correspondingChange);
correspondingChange.sync();
}
}
};
DS.OneToManyChange.ensureSameTransaction = function(changes, store){
var records = Ember.A();
forEach(changes, function(change){
records.addObject(change.getSecondRecord());
records.addObject(change.getFirstRecord());
});
var transaction = store.ensureSameTransaction(records);
forEach(changes, function(change){
change.transaction = transaction;
});
};
DS.RelationshipChange.prototype = {
getSecondRecordName: function() {
var name = this.secondRecordName, store = this.store, parent;
if (!name) {
parent = this.secondRecordReference;
if (!parent) { return; }
var childType = this.firstRecordReference.type;
var inverseType = DS._inverseTypeFor(childType, this.firstRecordName);
name = inverseHasManyName(inverseType, childType, this.firstRecordName);
this.secondRecordName = name;
}
return name;
},
/**
Get the name of the relationship on the belongsTo side.
@returns {String}
*/
getFirstRecordName: function() {
var name = this.firstRecordName, store = this.store, parent, child;
if (!name) {
parent = this.secondRecordReference;
child = this.firstRecordReference;
if (!(child && parent)) { return; }
name = DS._inverseRelationshipFor(child.type, parent.type).name;
this.firstRecordName = name;
}
return name;
},
/** @private */
destroy: function() {
var childReference = this.childReference,
belongsToName = this.getFirstRecordName(),
hasManyName = this.getSecondRecordName(),
store = this.store,
child, oldParent, newParent, lastParent, transaction;
store.removeRelationshipChangeFor(childReference, belongsToName, this.parentReference, hasManyName, this.changeType);
if (transaction = this.transaction) {
transaction.relationshipBecameClean(this);
}
},
/** @private */
getByReference: function(reference) {
var store = this.store;
// return null or undefined if the original reference was null or undefined
if (!reference) { return reference; }
if (store.recordIsMaterialized(reference)) {
return store.recordForReference(reference);
}
},
getSecondRecord: function(){
return this.getByReference(this.secondRecordReference);
},
/** @private */
getFirstRecord: function() {
return this.getByReference(this.firstRecordReference);
},
/**
@private
Make sure that all three parts of the relationship change are part of
the same transaction. If any of the three records is clean and in the
default transaction, and the rest are in a different transaction, move
them all into that transaction.
*/
ensureSameTransaction: function() {
var child = this.getFirstRecord(),
parentRecord = this.getSecondRecord();
var transaction = this.store.ensureSameTransaction([child, parentRecord]);
this.transaction = transaction;
return transaction;
},
callChangeEvents: function(){
var hasManyName = this.getSecondRecordName(),
belongsToName = this.getFirstRecordName(),
child = this.getFirstRecord(),
parentRecord = this.getSecondRecord();
var dirtySet = new Ember.OrderedSet();
// TODO: This implementation causes a race condition in key-value
// stores. The fix involves buffering changes that happen while
// a record is loading. A similar fix is required for other parts
// of ember-data, and should be done as new infrastructure, not
// a one-off hack. [tomhuda]
if (parentRecord && get(parentRecord, 'isLoaded')) {
this.store.recordHasManyDidChange(dirtySet, parentRecord, this);
}
if (child) {
this.store.recordBelongsToDidChange(dirtySet, child, this);
}
dirtySet.forEach(function(record) {
record.adapterDidDirty();
});
},
coalesce: function(){
var relationshipPairs = this.store.relationshipChangePairsFor(this.firstRecordReference);
forEach(relationshipPairs, function(pair){
var addedChange = pair["add"];
var removedChange = pair["remove"];
if(addedChange && removedChange) {
addedChange.destroy();
removedChange.destroy();
}
});
}
};
DS.RelationshipChangeAdd.prototype = Ember.create(DS.RelationshipChange.create({}));
DS.RelationshipChangeRemove.prototype = Ember.create(DS.RelationshipChange.create({}));
DS.RelationshipChangeAdd.prototype.changeType = "add";
DS.RelationshipChangeAdd.prototype.sync = function() {
var secondRecordName = this.getSecondRecordName(),
firstRecordName = this.getFirstRecordName(),
firstRecord = this.getFirstRecord(),
secondRecord = this.getSecondRecord();
//Ember.assert("You specified a hasMany (" + hasManyName + ") on " + (!belongsToName && (newParent || oldParent || this.lastParent).constructor) + " but did not specify an inverse belongsTo on " + child.constructor, belongsToName);
//Ember.assert("You specified a belongsTo (" + belongsToName + ") on " + child.constructor + " but did not specify an inverse hasMany on " + (!hasManyName && (newParent || oldParent || this.lastParentRecord).constructor), hasManyName);
var transaction = this.ensureSameTransaction();
transaction.relationshipBecameDirty(this);
this.callChangeEvents();
if (secondRecord && firstRecord) {
if(this.secondRecordKind === "belongsTo"){
secondRecord.suspendRelationshipObservers(function(){
set(secondRecord, secondRecordName, firstRecord);
});
}
else if(this.secondRecordKind === "hasMany"){
secondRecord.suspendRelationshipObservers(function(){
get(secondRecord, secondRecordName).addObject(firstRecord);
});
}
}
if (firstRecord && secondRecord && get(firstRecord, firstRecordName) !== secondRecord) {
if(this.firstRecordKind === "belongsTo"){
firstRecord.suspendRelationshipObservers(function(){
set(firstRecord, firstRecordName, secondRecord);
});
}
else if(this.firstdRecordKind === "hasMany"){
firstRecord.suspendRelationshipObservers(function(){
get(firstRecord, firstRecordName).addObject(secondRecord);
});
}
}
this.coalesce();
};
DS.RelationshipChangeRemove.prototype.changeType = "remove";
DS.RelationshipChangeRemove.prototype.sync = function() {
var secondRecordName = this.getSecondRecordName(),
firstRecordName = this.getFirstRecordName(),
firstRecord = this.getFirstRecord(),
secondRecord = this.getSecondRecord();
//Ember.assert("You specified a hasMany (" + hasManyName + ") on " + (!belongsToName && (newParent || oldParent || this.lastParent).constructor) + " but did not specify an inverse belongsTo on " + child.constructor, belongsToName);
//Ember.assert("You specified a belongsTo (" + belongsToName + ") on " + child.constructor + " but did not specify an inverse hasMany on " + (!hasManyName && (newParent || oldParent || this.lastParentRecord).constructor), hasManyName);
var transaction = this.ensureSameTransaction(firstRecord, secondRecord, secondRecordName, firstRecordName);
transaction.relationshipBecameDirty(this);
this.callChangeEvents();
if (secondRecord && firstRecord) {
if(this.secondRecordKind === "belongsTo"){
secondRecord.suspendRelationshipObservers(function(){
set(secondRecord, secondRecordName, null);
});
}
else if(this.secondRecordKind === "hasMany"){
secondRecord.suspendRelationshipObservers(function(){
get(secondRecord, secondRecordName).removeObject(firstRecord);
});
}
}
if (firstRecord && get(firstRecord, firstRecordName)) {
if(this.firstRecordKind === "belongsTo"){
firstRecord.suspendRelationshipObservers(function(){
set(firstRecord, firstRecordName, null);
});
}
else if(this.firstdRecordKind === "hasMany"){
firstRecord.suspendRelationshipObservers(function(){
get(firstRecord, firstRecordName).removeObject(secondRecord);
});
}
}
this.coalesce();
};
function inverseBelongsToName(parentType, childType, hasManyName) {
// Get the options passed to the parent's DS.hasMany()
var options = parentType.metaForProperty(hasManyName).options;
var belongsToName;
if (belongsToName = options.inverse) {
return belongsToName;
}
return DS._inverseRelationshipFor(childType, parentType).name;
}
function inverseHasManyName(parentType, childType, belongsToName) {
var options = childType.metaForProperty(belongsToName).options;
var hasManyName;
if (hasManyName = options.inverse) {
return hasManyName;
}
return DS._inverseRelationshipFor(parentType, childType).name;
}
})();
(function() {
})();
(function() {
var set = Ember.set;
/**
This code registers an injection for Ember.Application.
If an Ember.js developer defines a subclass of DS.Store on their application,
this code will automatically instantiate it and make it available on the
router.
Additionally, after an application's controllers have been injected, they will
each have the store made available to them.
For example, imagine an Ember.js application with the following classes:
App.Store = DS.Store.extend({
adapter: 'App.MyCustomAdapter'
});
App.PostsController = Ember.ArrayController.extend({
// ...
});
When the application is initialized, `App.Store` will automatically be
instantiated, and the instance of `App.PostsController` will have its `store`
property set to that instance.
Note that this code will only be run if the `ember-application` package is
loaded. If Ember Data is being used in an environment other than a
typical application (e.g., node.js where only `ember-runtime` is available),
this code will be ignored.
*/
Ember.onLoad('Ember.Application', function(Application) {
if (Application.registerInjection) {
Application.registerInjection({
name: "store",
before: "controllers",
// If a store subclass is defined, like App.Store,
// instantiate it and inject it into the router.
injection: function(app, stateManager, property) {
if (!stateManager) { return; }
if (property === 'Store') {
set(stateManager, 'store', app[property].create());
}
}
});
Application.registerInjection({
name: "giveStoreToControllers",
after: ['store','controllers'],
// For each controller, set its `store` property
// to the DS.Store instance we created above.
injection: function(app, stateManager, property) {
if (!stateManager) { return; }
if (/^[A-Z].*Controller$/.test(property)) {
var controllerName = property.charAt(0).toLowerCase() + property.substr(1);
var store = stateManager.get('store');
var controller = stateManager.get(controllerName);
if(!controller) { return; }
controller.set('store', store);
}
}
});
} else if (Application.initializer) {
Application.initializer({
name: "store",
initialize: function(container, application) {
application.register('store:main', application.Store);
// Eagerly generate the store so defaultStore is populated.
// TODO: Do this in a finisher hook
container.lookup('store:main');
}
});
Application.initializer({
name: "injectStore",
initialize: function(container, application) {
application.inject('controller', 'store', 'store:main');
application.inject('route', 'store', 'store:main');
}
});
}
});
})();
(function() {
var get = Ember.get, set = Ember.set, map = Ember.ArrayPolyfills.map, isNone = Ember.isNone;
function mustImplement(name) {
return function() {
throw new Ember.Error("Your serializer " + this.toString() + " does not implement the required method " + name);
};
}
/**
A serializer is responsible for serializing and deserializing a group of
records.
`DS.Serializer` is an abstract base class designed to help you build a
serializer that can read to and write from any serialized form. While most
applications will use `DS.JSONSerializer`, which reads and writes JSON, the
serializer architecture allows your adapter to transmit things like XML,
strings, or custom binary data.
Typically, your application's `DS.Adapter` is responsible for both creating a
serializer as well as calling the appropriate methods when it needs to
materialize data or serialize a record.
The serializer API is designed as a series of layered hooks that you can
override to customize any of the individual steps of serialization and
deserialization.
The hooks are organized by the three responsibilities of the serializer:
1. Determining naming conventions
2. Serializing records into a serialized form
3. Deserializing records from a serialized form
Because Ember Data lazily materializes records, the deserialization
step, and therefore the hooks you implement, are split into two phases:
1. Extraction, where the serialized forms for multiple records are
extracted from a single payload. The IDs of each record are also
extracted for indexing.
2. Materialization, where a newly-created record has its attributes
and relationships initialized based on the serialized form loaded
by the adapter.
Additionally, a serializer can convert values from their JavaScript
versions into their serialized versions via a declarative API.
## Naming Conventions
One of the most common uses of the serializer is to map attribute names
from the serialized form to your `DS.Model`. For example, in your model,
you may have an attribute called `firstName`:
```javascript
App.Person = DS.Model.extend({
firstName: DS.attr('string')
});
```
However, because the web API your adapter is communicating with is
legacy, it calls this attribute `FIRST_NAME`.
You can determine the attribute name used in the serialized form
by implementing `keyForAttributeName`:
```javascript
keyForAttributeName: function(type, name) {
return name.underscore.toUpperCase();
}
```
If your attribute names are not predictable, you can re-map them
one-by-one using the adapter's `map` API:
```javascript
App.Adapter.map('App.Person', {
firstName: { key: '*API_USER_FIRST_NAME*' }
});
```
This API will also work for relationships and primary keys. For
example:
```javascript
App.Adapter.map('App.Person', {
primaryKey: '_id'
});
```
## Serialization
During the serialization process, a record or records are converted
from Ember.js objects into their serialized form.
These methods are designed in layers, like a delicious 7-layer
cake (but with fewer layers).
The main entry point for serialization is the `serialize`
method, which takes the record and options.
The `serialize` method is responsible for:
* turning the record's attributes (`DS.attr`) into
attributes on the JSON object.
* optionally adding the record's ID onto the hash
* adding relationships (`DS.hasMany` and `DS.belongsTo`)
to the JSON object.
Depending on the backend, the serializer can choose
whether to include the `hasMany` or `belongsTo`
relationships on the JSON hash.
For very custom serialization, you can implement your
own `serialize` method. In general, however, you will want
to override the hooks described below.
### Adding the ID
The default `serialize` will optionally call your serializer's
`addId` method with the JSON hash it is creating, the
record's type, and the record's ID. The `serialize` method
will not call `addId` if the record's ID is undefined.
Your adapter must specifically request ID inclusion by
passing `{ includeId: true }` as an option to `serialize`.
NOTE: You may not want to include the ID when updating an
existing record, because your server will likely disallow
changing an ID after it is created, and the PUT request
itself will include the record's identification.
By default, `addId` will:
1. Get the primary key name for the record by calling
the serializer's `primaryKey` with the record's type.
Unless you override the `primaryKey` method, this
will be `'id'`.
2. Assign the record's ID to the primary key in the
JSON hash being built.
If your backend expects a JSON object with the primary
key at the root, you can just override the `primaryKey`
method on your serializer subclass.
Otherwise, you can override the `addId` method for
more specialized handling.
### Adding Attributes
By default, the serializer's `serialize` method will call
`addAttributes` with the JSON object it is creating
and the record to serialize.
The `addAttributes` method will then call `addAttribute`
in turn, with the JSON object, the record to serialize,
the attribute's name and its type.
Finally, the `addAttribute` method will serialize the
attribute:
1. It will call `keyForAttributeName` to determine
the key to use in the JSON hash.
2. It will get the value from the record.
3. It will call `serializeValue` with the attribute's
value and attribute type to convert it into a
JSON-compatible value. For example, it will convert a
Date into a String.
If your backend expects a JSON object with attributes as
keys at the root, you can just override the `serializeValue`
and `keyForAttributeName` methods in your serializer
subclass and let the base class do the heavy lifting.
If you need something more specialized, you can probably
override `addAttribute` and let the default `addAttributes`
handle the nitty gritty.
### Adding Relationships
By default, `serialize` will call your serializer's
`addRelationships` method with the JSON object that is
being built and the record being serialized. The default
implementation of this method is to loop over all of the
relationships defined on your record type and:
* If the relationship is a `DS.hasMany` relationship,
call `addHasMany` with the JSON object, the record
and a description of the relationship.
* If the relationship is a `DS.belongsTo` relationship,
call `addBelongsTo` with the JSON object, the record
and a description of the relationship.
The relationship description has the following keys:
* `type`: the class of the associated information (the
first parameter to `DS.hasMany` or `DS.belongsTo`)
* `kind`: either `hasMany` or `belongsTo`
The relationship description may get additional
information in the future if more capabilities or
relationship types are added. However, it will
remain backwards-compatible, so the mere existence
of new features should not break existing adapters.
*/
DS.Serializer = Ember.Object.extend({
init: function() {
this.mappings = Ember.Map.create();
this.configurations = Ember.Map.create();
this.globalConfigurations = {};
},
extract: mustImplement('extract'),
extractMany: mustImplement('extractMany'),
extractRecordRepresentation: function(loader, type, json, shouldSideload) {
var mapping = this.mappingForType(type);
var embeddedData, prematerialized = {}, reference;
if (shouldSideload) {
reference = loader.sideload(type, json);
} else {
reference = loader.load(type, json);
}
this.eachEmbeddedHasMany(type, function(name, relationship) {
var embeddedData = json[this.keyFor(relationship)];
if (!isNone(embeddedData)) {
this.extractEmbeddedHasMany(loader, relationship, embeddedData, reference, prematerialized);
}
}, this);
this.eachEmbeddedBelongsTo(type, function(name, relationship) {
var embeddedData = json[this.keyFor(relationship)];
if (!isNone(embeddedData)) {
this.extractEmbeddedBelongsTo(loader, relationship, embeddedData, reference, prematerialized);
}
}, this);
loader.prematerialize(reference, prematerialized);
return reference;
},
extractEmbeddedHasMany: function(loader, relationship, array, parent, prematerialized) {
var references = map.call(array, function(item) {
if (!item) { return; }
var reference = this.extractRecordRepresentation(loader, relationship.type, item, true);
// If the embedded record should also be saved back when serializing the parent,
// make sure we set its parent since it will not have an ID.
var embeddedType = this.embeddedType(parent.type, relationship.key);
if (embeddedType === 'always') {
reference.parent = parent;
}
return reference;
}, this);
prematerialized[relationship.key] = references;
},
extractEmbeddedBelongsTo: function(loader, relationship, data, parent, prematerialized) {
var reference = this.extractRecordRepresentation(loader, relationship.type, data, true);
prematerialized[relationship.key] = reference;
// If the embedded record should also be saved back when serializing the parent,
// make sure we set its parent since it will not have an ID.
var embeddedType = this.embeddedType(parent.type, relationship.key);
if (embeddedType === 'always') {
reference.parent = parent;
}
},
//.......................
//. SERIALIZATION HOOKS
//.......................
/**
The main entry point for serializing a record. While you can consider this
a hook that can be overridden in your serializer, you will have to manually
handle serialization. For most cases, there are more granular hooks that you
can override.
If overriding this method, these are the responsibilities that you will need
to implement yourself:
* If the option hash contains `includeId`, add the record's ID to the serialized form.
By default, `serialize` calls `addId` if appropriate.
* Add the record's attributes to the serialized form. By default, `serialize` calls
`addAttributes`.
* Add the record's relationships to the serialized form. By default, `serialize` calls
`addRelationships`.
@param {DS.Model} record the record to serialize
@param {Object} [options] a hash of options
@returns {any} the serialized form of the record
*/
serialize: function(record, options) {
options = options || {};
var serialized = this.createSerializedForm(), id;
if (options.includeId) {
if (id = get(record, 'id')) {
this._addId(serialized, record.constructor, id);
}
}
this.addAttributes(serialized, record);
this.addRelationships(serialized, record);
return serialized;
},
/**
@private
Given an attribute type and value, convert the value into the
serialized form using the transform registered for that type.
@param {any} value the value to convert to the serialized form
@param {String} attributeType the registered type (e.g. `string`
or `boolean`)
@returns {any} the serialized form of the value
*/
serializeValue: function(value, attributeType) {
var transform = this.transforms ? this.transforms[attributeType] : null;
Ember.assert("You tried to use an attribute type (" + attributeType + ") that has not been registered", transform);
return transform.serialize(value);
},
/**
A hook you can use to normalize IDs before adding them to the
serialized representation.
Because the store coerces all IDs to strings for consistency,
this is the opportunity for the serializer to, for example,
convert numerical IDs back into number form.
@param {String} id the id from the record
@returns {any} the serialized representation of the id
*/
serializeId: function(id) {
if (isNaN(id)) { return id; }
return +id;
},
/**
A hook you can use to change how attributes are added to the serialized
representation of a record.
By default, `addAttributes` simply loops over all of the attributes of the
passed record, maps the attribute name to the key for the serialized form,
and invokes any registered transforms on the value. It then invokes the
more granular `addAttribute` with the key and transformed value.
Since you can override `keyForAttributeName`, `addAttribute`, and register
custom tranforms, you should rarely need to override this hook.
@param {any} data the serialized representation that is being built
@param {DS.Model} record the record to serialize
*/
addAttributes: function(data, record) {
record.eachAttribute(function(name, attribute) {
this._addAttribute(data, record, name, attribute.type);
}, this);
},
/**
A hook you can use to customize how the key/value pair is added to
the serialized data.
@param {any} serialized the serialized form being built
@param {String} key the key to add to the serialized data
@param {any} value the value to add to the serialized data
*/
addAttribute: Ember.K,
/**
A hook you can use to customize how the record's id is added to
the serialized data.
The `addId` hook is called with:
* the serialized representation being built
* the resolved primary key (taking configurations and the
`primaryKey` hook into consideration)
* the serialized id (after calling the `serializeId` hook)
@param {any} data the serialized representation that is being built
@param {String} key the resolved primary key
@param {id} id the serialized id
*/
addId: Ember.K,
/**
A hook you can use to change how relationships are added to the serialized
representation of a record.
By default, `addAttributes` loops over all of the relationships of the
passed record, maps the relationship names to the key for the serialized form,
and then invokes the public `addBelongsTo` and `addHasMany` hooks.
Since you can override `keyForBelongsTo`, `keyForHasMany`, `addBelongsTo`,
`addHasMany`, and register mappings, you should rarely need to override this
hook.
@param {any} data the serialized representation that is being built
@param {DS.Model} record the record to serialize
*/
addRelationships: function(data, record) {
record.eachRelationship(function(name, relationship) {
if (relationship.kind === 'belongsTo') {
this._addBelongsTo(data, record, name, relationship);
} else if (relationship.kind === 'hasMany') {
this._addHasMany(data, record, name, relationship);
}
}, this);
},
/**
A hook you can use to add a `belongsTo` relationship to the
serialized representation.
The specifics of this hook are very adapter-specific, so there
is no default implementation. You can see `DS.JSONSerializer`
for an example of an implementation of the `addBelongsTo` hook.
The `belongsTo` relationship object has the following properties:
* **type** a subclass of DS.Model that is the type of the
relationship. This is the first parameter to DS.belongsTo
* **options** the options passed to the call to DS.belongsTo
* **kind** always `belongsTo`
Additional properties may be added in the future.
@param {any} data the serialized representation that is being built
@param {DS.Model} record the record to serialize
@param {String} key the key for the serialized object
@param {Object} relationship an object representing the relationship
*/
addBelongsTo: Ember.K,
/**
A hook you can use to add a `hasMany` relationship to the
serialized representation.
The specifics of this hook are very adapter-specific, so there
is no default implementation. You may not need to implement this,
for example, if your backend only expects relationships on the
child of a one to many relationship.
The `hasMany` relationship object has the following properties:
* **type** a subclass of DS.Model that is the type of the
relationship. This is the first parameter to DS.hasMany
* **options** the options passed to the call to DS.hasMany
* **kind** always `hasMany`
Additional properties may be added in the future.
@param {any} data the serialized representation that is being built
@param {DS.Model} record the record to serialize
@param {String} key the key for the serialized object
@param {Object} relationship an object representing the relationship
*/
addHasMany: Ember.K,
/**
NAMING CONVENTIONS
The most commonly overridden APIs of the serializer are
the naming convention methods:
* `keyForAttributeName`: converts a camelized attribute name
into a key in the adapter-provided data hash. For example,
if the model's attribute name was `firstName`, and the
server used underscored names, you would return `first_name`.
* `primaryKey`: returns the key that should be used to
extract the id from the adapter-provided data hash. It is
also used when serializing a record.
*/
/**
A hook you can use in your serializer subclass to customize
how an unmapped attribute name is converted into a key.
By default, this method returns the `name` parameter.
For example, if the attribute names in your JSON are underscored,
you will want to convert them into JavaScript conventional
camelcase:
```javascript
App.MySerializer = DS.Serializer.extend({
// ...
keyForAttributeName: function(type, name) {
return name.camelize();
}
});
```
@param {DS.Model subclass} type the type of the record with
the attribute name `name`
@param {String} name the attribute name to convert into a key
@returns {String} the key
*/
keyForAttributeName: function(type, name) {
return name;
},
/**
A hook you can use in your serializer to specify a conventional
primary key.
By default, this method will return the string `id`.
In general, you should not override this hook to specify a special
primary key for an individual type; use `configure` instead.
For example, if your primary key is always `__id__`:
```javascript
App.MySerializer = DS.Serializer.extend({
// ...
primaryKey: function(type) {
return '__id__';
}
});
```
In another example, if the primary key always includes the
underscored version of the type before the string `id`:
```javascript
App.MySerializer = DS.Serializer.extend({
// ...
primaryKey: function(type) {
// If the type is `BlogPost`, this will return
// `blog_post_id`.
var typeString = type.toString().split(".")[1].underscore();
return typeString + "_id";
}
});
```
@param {DS.Model subclass} type
@returns {String} the primary key for the type
*/
primaryKey: function(type) {
return "id";
},
/**
A hook you can use in your serializer subclass to customize
how an unmapped `belongsTo` relationship is converted into
a key.
By default, this method calls `keyForAttributeName`, so if
your naming convention is uniform across attributes and
relationships, you can use the default here and override
just `keyForAttributeName` as needed.
For example, if the `belongsTo` names in your JSON always
begin with `BT_` (e.g. `BT_posts`), you can strip out the
`BT_` prefix:"
```javascript
App.MySerializer = DS.Serializer.extend({
// ...
keyForBelongsTo: function(type, name) {
return name.match(/^BT_(.*)$/)[1].camelize();
}
});
```
@param {DS.Model subclass} type the type of the record with
the `belongsTo` relationship.
@param {String} name the relationship name to convert into a key
@returns {String} the key
*/
keyForBelongsTo: function(type, name) {
return this.keyForAttributeName(type, name);
},
/**
A hook you can use in your serializer subclass to customize
how an unmapped `hasMany` relationship is converted into
a key.
By default, this method calls `keyForAttributeName`, so if
your naming convention is uniform across attributes and
relationships, you can use the default here and override
just `keyForAttributeName` as needed.
For example, if the `hasMany` names in your JSON always
begin with the "table name" for the current type (e.g.
`post_comments`), you can strip out the prefix:"
```javascript
App.MySerializer = DS.Serializer.extend({
// ...
keyForHasMany: function(type, name) {
// if your App.BlogPost has many App.BlogComment, the key from
// the server would look like: `blog_post_blog_comments`
//
// 1. Convert the type into a string and underscore the
// second part (App.BlogPost -> blog_post)
// 2. Extract the part after `blog_post_` (`blog_comments`)
// 3. Underscore it, to become `blogComments`
var typeString = type.toString().split(".")[1].underscore();
return name.match(new RegExp("^" + typeString + "_(.*)$"))[1].camelize();
}
});
```
@param {DS.Model subclass} type the type of the record with
the `belongsTo` relationship.
@param {String} name the relationship name to convert into a key
@returns {String} the key
*/
keyForHasMany: function(type, name) {
return this.keyForAttributeName(type, name);
},
//.........................
//. MATERIALIZATION HOOKS
//.........................
materialize: function(record, serialized, prematerialized) {
var id;
if (Ember.isNone(get(record, 'id'))) {
if (prematerialized && prematerialized.hasOwnProperty('id')) {
id = prematerialized.id;
} else {
id = this.extractId(record.constructor, serialized);
}
record.materializeId(id);
}
this.materializeAttributes(record, serialized, prematerialized);
this.materializeRelationships(record, serialized, prematerialized);
},
deserializeValue: function(value, attributeType) {
var transform = this.transforms ? this.transforms[attributeType] : null;
Ember.assert("You tried to use a attribute type (" + attributeType + ") that has not been registered", transform);
return transform.deserialize(value);
},
materializeAttributes: function(record, serialized, prematerialized) {
record.eachAttribute(function(name, attribute) {
if (prematerialized && prematerialized.hasOwnProperty(name)) {
record.materializeAttribute(name, prematerialized[name]);
} else {
this.materializeAttribute(record, serialized, name, attribute.type);
}
}, this);
},
materializeAttribute: function(record, serialized, attributeName, attributeType) {
var value = this.extractAttribute(record.constructor, serialized, attributeName);
value = this.deserializeValue(value, attributeType);
record.materializeAttribute(attributeName, value);
},
materializeRelationships: function(record, hash, prematerialized) {
record.eachRelationship(function(name, relationship) {
if (relationship.kind === 'hasMany') {
if (prematerialized && prematerialized.hasOwnProperty(name)) {
record.materializeHasMany(name, prematerialized[name]);
} else {
this.materializeHasMany(name, record, hash, relationship, prematerialized);
}
} else if (relationship.kind === 'belongsTo') {
if (prematerialized && prematerialized.hasOwnProperty(name)) {
record.materializeBelongsTo(name, prematerialized[name]);
} else {
this.materializeBelongsTo(name, record, hash, relationship, prematerialized);
}
}
}, this);
},
materializeHasMany: function(name, record, hash, relationship) {
var key = this._keyForHasMany(record.constructor, relationship.key);
record.materializeHasMany(name, this.extractHasMany(record.constructor, hash, key));
},
materializeBelongsTo: function(name, record, hash, relationship) {
var key = this._keyForBelongsTo(record.constructor, relationship.key);
record.materializeBelongsTo(name, this.extractBelongsTo(record.constructor, hash, key));
},
_extractEmbeddedRelationship: function(type, hash, name, relationshipType) {
var key = this['_keyFor' + relationshipType](type, name);
if (this.embeddedType(type, name)) {
return this['extractEmbedded' + relationshipType](type, hash, key);
}
},
_extractEmbeddedBelongsTo: function(type, hash, name) {
return this._extractEmbeddedRelationship(type, hash, name, 'BelongsTo');
},
_extractEmbeddedHasMany: function(type, hash, name) {
return this._extractEmbeddedRelationship(type, hash, name, 'HasMany');
},
/**
@private
This method is called to get the primary key for a given
type.
If a primary key configuration exists for this type, this
method will return the configured value. Otherwise, it will
call the public `primaryKey` hook.
@param {DS.Model subclass} type
@returns {String} the primary key for the type
*/
_primaryKey: function(type) {
var config = this.configurationForType(type),
primaryKey = config && config.primaryKey;
if (primaryKey) {
return primaryKey;
} else {
return this.primaryKey(type);
}
},
/**
@private
This method looks up the key for the attribute name and transforms the
attribute's value using registered transforms.
Specifically:
1. Look up the key for the attribute name. If available, this will use
any registered mappings. Otherwise, it will invoke the public
`keyForAttributeName` hook.
2. Get the value from the record using the `attributeName`.
3. Transform the value using registered transforms for the `attributeType`.
4. Invoke the public `addAttribute` hook with the hash, key, and
transformed value.
@param {any} data the serialized representation being built
@param {DS.Model} record the record to serialize
@param {String} attributeName the name of the attribute on the record
@param {String} attributeType the type of the attribute (e.g. `string`
or `boolean`)
*/
_addAttribute: function(data, record, attributeName, attributeType) {
var key = this._keyForAttributeName(record.constructor, attributeName);
var value = get(record, attributeName);
this.addAttribute(data, key, this.serializeValue(value, attributeType));
},
/**
@private
This method looks up the primary key for the `type` and invokes
`serializeId` on the `id`.
It then invokes the public `addId` hook with the primary key and
the serialized id.
@param {any} data the serialized representation that is being built
@param {Ember.Model subclass} type
@param {any} id the materialized id from the record
*/
_addId: function(hash, type, id) {
var primaryKey = this._primaryKey(type);
this.addId(hash, primaryKey, this.serializeId(id));
},
/**
@private
This method is called to get a key used in the data from
an attribute name. It first checks for any mappings before
calling the public hook `keyForAttributeName`.
@param {DS.Model subclass} type the type of the record with
the attribute name `name`
@param {String} name the attribute name to convert into a key
@returns {String} the key
*/
_keyForAttributeName: function(type, name) {
return this._keyFromMappingOrHook('keyForAttributeName', type, name);
},
/**
@private
This method is called to get a key used in the data from
a belongsTo relationship. It first checks for any mappings before
calling the public hook `keyForBelongsTo`.
@param {DS.Model subclass} type the type of the record with
the `belongsTo` relationship.
@param {String} name the relationship name to convert into a key
@returns {String} the key
*/
_keyForBelongsTo: function(type, name) {
return this._keyFromMappingOrHook('keyForBelongsTo', type, name);
},
keyFor: function(description) {
var type = description.parentType,
name = description.key;
switch (description.kind) {
case 'belongsTo':
return this._keyForBelongsTo(type, name);
case 'hasMany':
return this._keyForHasMany(type, name);
}
},
/**
@private
This method is called to get a key used in the data from
a hasMany relationship. It first checks for any mappings before
calling the public hook `keyForHasMany`.
@param {DS.Model subclass} type the type of the record with
the `hasMany` relationship.
@param {String} name the relationship name to convert into a key
@returns {String} the key
*/
_keyForHasMany: function(type, name) {
return this._keyFromMappingOrHook('keyForHasMany', type, name);
},
/**
@private
This method converts the relationship name to a key for serialization,
and then invokes the public `addBelongsTo` hook.
@param {any} data the serialized representation that is being built
@param {DS.Model} record the record to serialize
@param {String} name the relationship name
@param {Object} relationship an object representing the relationship
*/
_addBelongsTo: function(data, record, name, relationship) {
var key = this._keyForBelongsTo(record.constructor, name);
this.addBelongsTo(data, record, key, relationship);
},
/**
@private
This method converts the relationship name to a key for serialization,
and then invokes the public `addHasMany` hook.
@param {any} data the serialized representation that is being built
@param {DS.Model} record the record to serialize
@param {String} name the relationship name
@param {Object} relationship an object representing the relationship
*/
_addHasMany: function(data, record, name, relationship) {
var key = this._keyForHasMany(record.constructor, name);
this.addHasMany(data, record, key, relationship);
},
/**
@private
An internal method that handles checking whether a mapping
exists for a particular attribute or relationship name before
calling the public hooks.
If a mapping is found, and the mapping has a key defined,
use that instead of invoking the hook.
@param {String} publicMethod the public hook to invoke if
a mapping is not found (e.g. `keyForAttributeName`)
@param {DS.Model subclass} type the type of the record with
the attribute or relationship name.
@param {String} name the attribute or relationship name to
convert into a key
*/
_keyFromMappingOrHook: function(publicMethod, type, name) {
var key = this.mappingOption(type, name, 'key');
if (key) {
return key;
} else {
return this[publicMethod](type, name);
}
},
/**
TRANSFORMS
*/
registerTransform: function(type, transform) {
this.transforms[type] = transform;
},
registerEnumTransform: function(type, objects) {
var transform = {
deserialize: function(deserialized) {
return Ember.A(objects).objectAt(deserialized);
},
serialize: function(serialized) {
return Ember.EnumerableUtils.indexOf(objects, serialized);
},
values: objects
};
this.registerTransform(type, transform);
},
/**
MAPPING CONVENIENCE
*/
map: function(type, mappings) {
this.mappings.set(type, mappings);
},
configure: function(type, configuration) {
if (type && !configuration) {
Ember.merge(this.globalConfigurations, type);
return;
}
var config = Ember.create(this.globalConfigurations);
Ember.merge(config, configuration);
this.configurations.set(type, config);
},
mappingForType: function(type) {
this._reifyMappings();
return this.mappings.get(type) || {};
},
configurationForType: function(type) {
this._reifyConfigurations();
return this.configurations.get(type) || this.globalConfigurations;
},
_reifyMappings: function() {
if (this._didReifyMappings) { return; }
var mappings = this.mappings,
reifiedMappings = Ember.Map.create();
mappings.forEach(function(key, mapping) {
if (typeof key === 'string') {
var type = Ember.get(Ember.lookup, key);
Ember.assert("Could not find model at path " + key, type);
reifiedMappings.set(type, mapping);
} else {
reifiedMappings.set(key, mapping);
}
});
this.mappings = reifiedMappings;
this._didReifyMappings = true;
},
_reifyConfigurations: function() {
if (this._didReifyConfigurations) { return; }
var configurations = this.configurations,
reifiedConfigurations = Ember.Map.create();
configurations.forEach(function(key, mapping) {
if (typeof key === 'string' && key !== 'plurals') {
var type = Ember.get(Ember.lookup, key);
Ember.assert("Could not find model at path " + key, type);
reifiedConfigurations.set(type, mapping);
} else {
reifiedConfigurations.set(key, mapping);
}
});
this.configurations = reifiedConfigurations;
this._didReifyConfigurations = true;
},
mappingOption: function(type, name, option) {
var mapping = this.mappingForType(type)[name];
return mapping && mapping[option];
},
configOption: function(type, option) {
var config = this.configurationForType(type);
return config[option];
},
// EMBEDDED HELPERS
embeddedType: function(type, name) {
return this.mappingOption(type, name, 'embedded');
},
eachEmbeddedRecord: function(record, callback, binding) {
this.eachEmbeddedBelongsToRecord(record, callback, binding);
this.eachEmbeddedHasManyRecord(record, callback, binding);
},
eachEmbeddedBelongsToRecord: function(record, callback, binding) {
var type = record.constructor;
this.eachEmbeddedBelongsTo(record.constructor, function(name, relationship, embeddedType) {
var embeddedRecord = get(record, name);
if (embeddedRecord) { callback.call(binding, embeddedRecord, embeddedType); }
});
},
eachEmbeddedHasManyRecord: function(record, callback, binding) {
var type = record.constructor;
this.eachEmbeddedHasMany(record.constructor, function(name, relationship, embeddedType) {
var array = get(record, name);
for (var i=0, l=get(array, 'length'); i<l; i++) {
callback.call(binding, array.objectAt(i), embeddedType);
}
});
},
eachEmbeddedHasMany: function(type, callback, binding) {
this.eachEmbeddedRelationship(type, 'hasMany', callback, binding);
},
eachEmbeddedBelongsTo: function(type, callback, binding) {
this.eachEmbeddedRelationship(type, 'belongsTo', callback, binding);
},
eachEmbeddedRelationship: function(type, kind, callback, binding) {
type.eachRelationship(function(name, relationship) {
var embeddedType = this.embeddedType(type, name);
if (embeddedType) {
if (relationship.kind === kind) {
callback.call(binding, name, relationship, embeddedType);
}
}
}, this);
}
});
})();
(function() {
var none = Ember.isNone;
/**
DS.Transforms is a hash of transforms used by DS.Serializer.
*/
DS.JSONTransforms = {
string: {
deserialize: function(serialized) {
return none(serialized) ? null : String(serialized);
},
serialize: function(deserialized) {
return none(deserialized) ? null : String(deserialized);
}
},
number: {
deserialize: function(serialized) {
return none(serialized) ? null : Number(serialized);
},
serialize: function(deserialized) {
return none(deserialized) ? null : Number(deserialized);
}
},
// Handles the following boolean inputs:
// "TrUe", "t", "f", "FALSE", 0, (non-zero), or boolean true/false
'boolean': {
deserialize: function(serialized) {
var type = typeof serialized;
if (type === "boolean") {
return serialized;
} else if (type === "string") {
return serialized.match(/^true$|^t$|^1$/i) !== null;
} else if (type === "number") {
return serialized === 1;
} else {
return false;
}
},
serialize: function(deserialized) {
return Boolean(deserialized);
}
},
date: {
deserialize: function(serialized) {
var type = typeof serialized;
var date = null;
if (type === "string" || type === "number") {
// this is a fix for Safari 5.1.5 on Mac which does not accept timestamps as yyyy-mm-dd
if (type === "string" && serialized.search(/^\d{4}-\d{2}-\d{2}$/) !== -1) {
serialized += "T00:00:00Z";
}
date = new Date(serialized);
// this is a fix for IE8 which does not accept timestamps in ISO 8601 format
if (type === "string" && isNaN(date)) {
date = new Date(Date.parse(serialized.replace(/\-/ig, '/').replace(/Z$/, '').split('.')[0]));
}
return date;
} else if (serialized === null || serialized === undefined) {
// if the value is not present in the data,
// return undefined, not null.
return serialized;
} else {
return null;
}
},
serialize: function(date) {
if (date instanceof Date) {
var days = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
var months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
var pad = function(num) {
return num < 10 ? "0"+num : ""+num;
};
var utcYear = date.getUTCFullYear(),
utcMonth = date.getUTCMonth(),
utcDayOfMonth = date.getUTCDate(),
utcDay = date.getUTCDay(),
utcHours = date.getUTCHours(),
utcMinutes = date.getUTCMinutes(),
utcSeconds = date.getUTCSeconds();
var dayOfWeek = days[utcDay];
var dayOfMonth = pad(utcDayOfMonth);
var month = months[utcMonth];
return dayOfWeek + ", " + dayOfMonth + " " + month + " " + utcYear + " " +
pad(utcHours) + ":" + pad(utcMinutes) + ":" + pad(utcSeconds) + " GMT";
} else {
return null;
}
}
}
};
})();
(function() {
var get = Ember.get, set = Ember.set;
var generatedId = 0;
DS.JSONSerializer = DS.Serializer.extend({
init: function() {
this._super();
if (!get(this, 'transforms')) {
this.set('transforms', DS.JSONTransforms);
}
this.sideloadMapping = Ember.Map.create();
this.configure({
meta: 'meta',
since: 'since'
});
},
configure: function(type, configuration) {
if (type && !configuration) {
return this._super(type);
}
var sideloadAs = configuration.sideloadAs;
if (sideloadAs) {
this.sideloadMapping.set(sideloadAs, type);
// Set a flag indicating that mappings may need to be normalized
// (i.e. converted from strings -> types) before sideloading.
// We can't do this conversion immediately here, because `configure`
// may be called before certain types have been defined.
this.sideloadMapping.normalized = false;
delete configuration.sideloadAs;
}
this._super.apply(this, arguments);
},
addId: function(data, key, id) {
data[key] = id;
},
/**
A hook you can use to customize how the key/value pair is added to
the serialized data.
@param {any} hash the JSON hash being built
@param {String} key the key to add to the serialized data
@param {any} value the value to add to the serialized data
*/
addAttribute: function(hash, key, value) {
hash[key] = value;
},
/**
@private
Creates an empty hash that will be filled in by the hooks called from the
`serialize()` method.
@return {Object}
*/
createSerializedForm: function() {
return {};
},
extractAttribute: function(type, hash, attributeName) {
var key = this._keyForAttributeName(type, attributeName);
return hash[key];
},
extractId: function(type, hash) {
var primaryKey = this._primaryKey(type);
if (hash.hasOwnProperty(primaryKey)) {
// Ensure that we coerce IDs to strings so that record
// IDs remain consistent between application runs; especially
// if the ID is serialized and later deserialized from the URL,
// when type information will have been lost.
return hash[primaryKey]+'';
} else {
return null;
}
},
extractHasMany: function(type, hash, key) {
return hash[key];
},
extractBelongsTo: function(type, hash, key) {
return hash[key];
},
addBelongsTo: function(hash, record, key, relationship) {
var type = record.constructor,
name = relationship.key,
value = null,
embeddedChild;
if (this.embeddedType(type, name)) {
if (embeddedChild = get(record, name)) {
value = this.serialize(embeddedChild, { includeId: true });
}
hash[key] = value;
} else {
var id = get(record, relationship.key+'.id');
if (!Ember.isNone(id)) { hash[key] = id; }
}
},
/**
Adds a has-many relationship to the JSON hash being built.
The default REST semantics are to only add a has-many relationship if it
is embedded. If the relationship was initially loaded by ID, we assume that
that was done as a performance optimization, and that changes to the
has-many should be saved as foreign key changes on the child's belongs-to
relationship.
@param {Object} hash the JSON being built
@param {DS.Model} record the record being serialized
@param {String} key the JSON key into which the serialized relationship
should be saved
@param {Object} relationship metadata about the relationship being serialized
*/
addHasMany: function(hash, record, key, relationship) {
var type = record.constructor,
name = relationship.key,
serializedHasMany = [],
manyArray, embeddedType;
// If the has-many is not embedded, there is nothing to do.
embeddedType = this.embeddedType(type, name);
if (embeddedType !== 'always') { return; }
// Get the DS.ManyArray for the relationship off the record
manyArray = get(record, name);
// Build up the array of serialized records
manyArray.forEach(function (record) {
serializedHasMany.push(this.serialize(record, { includeId: true }));
}, this);
// Set the appropriate property of the serialized JSON to the
// array of serialized embedded records
hash[key] = serializedHasMany;
},
// EXTRACTION
extract: function(loader, json, type, record) {
var root = this.rootForType(type);
this.sideload(loader, type, json, root);
this.extractMeta(loader, type, json);
if (json[root]) {
if (record) { loader.updateId(record, json[root]); }
this.extractRecordRepresentation(loader, type, json[root]);
}
},
extractMany: function(loader, json, type, records) {
var root = this.rootForType(type);
root = this.pluralize(root);
this.sideload(loader, type, json, root);
this.extractMeta(loader, type, json);
if (json[root]) {
var objects = json[root], references = [];
if (records) { records = records.toArray(); }
for (var i = 0; i < objects.length; i++) {
if (records) { loader.updateId(records[i], objects[i]); }
var reference = this.extractRecordRepresentation(loader, type, objects[i]);
references.push(reference);
}
loader.populateArray(references);
}
},
extractMeta: function(loader, type, json) {
var meta = json[this.configOption(type, 'meta')], since;
if (!meta) { return; }
if (since = meta[this.configOption(type, 'since')]) {
loader.sinceForType(type, since);
}
},
/**
@private
Iterates over the `json` payload and attempts to load any data
included alongside `root`.
The keys expected for sideloaded data are based upon the types related
to the root model. Recursion is used to ensure that types related to
related types can be loaded as well. Any custom keys specified by
`sideloadAs` mappings will also be respected.
@param {DS.Store subclass} loader
@param {DS.Model subclass} type
@param {Object} json
@param {String} root
*/
sideload: function(loader, type, json, root) {
var sideloadedType;
this.normalizeSideloadMappings();
this.configureSideloadMappingForType(type);
for (var prop in json) {
if (!json.hasOwnProperty(prop) ||
prop === root ||
prop === this.configOption(type, 'meta')) {
continue;
}
sideloadedType = this.sideloadMapping.get(prop);
Ember.assert("Your server returned a hash with the key " + prop +
" but you have no mapping for it",
!!sideloadedType);
this.loadValue(loader, sideloadedType, json[prop]);
}
},
/**
@private
Iterates over all the `sideloadAs` mappings and converts any that are
strings to their equivalent types.
This is an optimization used to avoid performing lookups for every
call to `sideload`.
*/
normalizeSideloadMappings: function() {
if (! this.sideloadMapping.normalized) {
this.sideloadMapping.forEach(function(key, value) {
if (typeof value === 'string') {
this.sideloadMapping.set(key, get(Ember.lookup, value));
}
}, this);
this.sideloadMapping.normalized = true;
}
},
/**
@private
Configures possible sideload mappings for the types related to a
particular model. This recursive method ensures that sideloading
works for related models as well.
@param {DS.Model subclass} type
@param {Ember.A} configured an array of types that have already been configured
*/
configureSideloadMappingForType: function(type, configured) {
if (!configured) {configured = Ember.A([]);}
configured.pushObject(type);
type.eachRelatedType(function(relatedType) {
if (!configured.contains(relatedType)) {
var root = this.sideloadMappingForType(relatedType);
if (!root) {
root = this.defaultSideloadRootForType(relatedType);
this.sideloadMapping.set(root, relatedType);
}
this.configureSideloadMappingForType(relatedType, configured);
}
}, this);
},
loadValue: function(loader, type, value) {
if (value instanceof Array) {
for (var i=0; i < value.length; i++) {
loader.sideload(type, value[i]);
}
} else {
loader.sideload(type, value);
}
},
// HELPERS
// define a plurals hash in your subclass to define
// special-case pluralization
pluralize: function(name) {
var plurals = this.configurations.get('plurals');
return (plurals && plurals[name]) || name + "s";
},
// use the same plurals hash to determine
// special-case singularization
singularize: function(name) {
var plurals = this.configurations.get('plurals');
if (plurals) {
for (var i in plurals) {
if (plurals[i] === name) {
return i;
}
}
}
if (name.lastIndexOf('s') === name.length - 1) {
return name.substring(0, name.length - 1);
} else {
return name;
}
},
/**
@private
Determines the singular root name for a particular type.
This is an underscored, lowercase version of the model name.
For example, the type `App.UserGroup` will have the root
`user_group`.
@param {DS.Model subclass} type
@returns {String} name of the root element
*/
rootForType: function(type) {
var typeString = type.toString();
Ember.assert("Your model must not be anonymous. It was " + type, typeString.charAt(0) !== '(');
// use the last part of the name as the URL
var parts = typeString.split(".");
var name = parts[parts.length - 1];
return name.replace(/([A-Z])/g, '_$1').toLowerCase().slice(1);
},
/**
@private
Determines the root name mapped to a particular sideloaded type.
@param {DS.Model subclass} type
@returns {String} name of the root element, if any is registered
*/
sideloadMappingForType: function(type) {
this.sideloadMapping.forEach(function(key, value) {
if (type === value) {
return key;
}
});
},
/**
@private
The default root name for a particular sideloaded type.
@param {DS.Model subclass} type
@returns {String} name of the root element
*/
defaultSideloadRootForType: function(type) {
return this.pluralize(this.rootForType(type));
}
});
})();
(function() {
function loaderFor(store) {
return {
load: function(type, data, prematerialized) {
return store.load(type, data, prematerialized);
},
loadMany: function(type, array) {
return store.loadMany(type, array);
},
updateId: function(record, data) {
return store.updateId(record, data);
},
populateArray: Ember.K,
sideload: function(type, data) {
return store.load(type, data);
},
sideloadMany: function(type, array) {
return store.loadMany(type, array);
},
prematerialize: function(reference, prematerialized) {
store.prematerialize(reference, prematerialized);
},
sinceForType: function(type, since) {
store.sinceForType(type, since);
}
};
}
DS.loaderFor = loaderFor;
/**
An adapter is an object that receives requests from a store and
translates them into the appropriate action to take against your
persistence layer. The persistence layer is usually an HTTP API, but may
be anything, such as the browser's local storage.
### Creating an Adapter
First, create a new subclass of `DS.Adapter`:
App.MyAdapter = DS.Adapter.extend({
// ...your code here
});
To tell your store which adapter to use, set its `adapter` property:
App.store = DS.Store.create({
revision: 3,
adapter: App.MyAdapter.create()
});
`DS.Adapter` is an abstract base class that you should override in your
application to customize it for your backend. The minimum set of methods
that you should implement is:
* `find()`
* `createRecord()`
* `updateRecord()`
* `deleteRecord()`
To improve the network performance of your application, you can optimize
your adapter by overriding these lower-level methods:
* `findMany()`
* `createRecords()`
* `updateRecords()`
* `deleteRecords()`
* `commit()`
*/
var get = Ember.get, set = Ember.set, merge = Ember.merge;
DS.Adapter = Ember.Object.extend(DS._Mappable, {
init: function() {
var serializer = get(this, 'serializer');
if (Ember.Object.detect(serializer)) {
serializer = serializer.create();
set(this, 'serializer', serializer);
}
this._attributesMap = this.createInstanceMapFor('attributes');
this._configurationsMap = this.createInstanceMapFor('configurations');
this._outstandingOperations = new Ember.MapWithDefault({
defaultValue: function() { return 0; }
});
this._dependencies = new Ember.MapWithDefault({
defaultValue: function() { return new Ember.OrderedSet(); }
});
this.registerSerializerTransforms(this.constructor, serializer, {});
this.registerSerializerMappings(serializer);
},
/**
Loads a payload for a record into the store.
This method asks the serializer to break the payload into
constituent parts, and then loads them into the store. For example,
if you have a payload that contains embedded records, they will be
extracted by the serializer and loaded into the store.
For example:
```javascript
adapter.load(store, App.Person, {
id: 123,
firstName: "Yehuda",
lastName: "Katz",
occupations: [{
id: 345,
title: "Tricycle Mechanic"
}]
});
```
This will load the payload for the `App.Person` with ID `123` and
the embedded `App.Occupation` with ID `345`.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {any} payload
*/
load: function(store, type, payload) {
var loader = loaderFor(store);
get(this, 'serializer').extractRecordRepresentation(loader, type, payload);
},
/**
Acknowledges that the adapter has finished creating a record.
Your adapter should call this method from `createRecord` when
it has saved a new record to its persistent storage and received
an acknowledgement.
If the persistent storage returns a new payload in response to the
creation, and you want to update the existing record with the
new information, pass the payload as the fourth parameter.
For example, the `RESTAdapter` saves newly created records by
making an Ajax request. When the server returns, the adapter
calls didCreateRecord. If the server returns a response body,
it is passed as the payload.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} record
@param {any} payload
*/
didCreateRecord: function(store, type, record, payload) {
store.didSaveRecord(record);
if (payload) {
var loader = DS.loaderFor(store);
loader.load = function(type, data, prematerialized) {
store.updateId(record, data);
return store.load(type, data, prematerialized);
};
get(this, 'serializer').extract(loader, payload, type);
}
},
/**
Acknowledges that the adapter has finished creating several records.
Your adapter should call this method from `createRecords` when it
has saved multiple created records to its persistent storage
received an acknowledgement.
If the persistent storage returns a new payload in response to the
creation, and you want to update the existing record with the
new information, pass the payload as the fourth parameter.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} record
@param {any} payload
*/
didCreateRecords: function(store, type, records, payload) {
records.forEach(function(record) {
store.didSaveRecord(record);
}, this);
if (payload) {
var loader = DS.loaderFor(store);
get(this, 'serializer').extractMany(loader, payload, type, records);
}
},
/**
@private
Acknowledges that the adapter has finished updating or deleting a record.
Your adapter should call this method from `updateRecord` or `deleteRecord`
when it has updated or deleted a record to its persistent storage and
received an acknowledgement.
If the persistent storage returns a new payload in response to the
update or delete, and you want to update the existing record with the
new information, pass the payload as the fourth parameter.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} record
@param {any} payload
*/
didSaveRecord: function(store, type, record, payload) {
store.didSaveRecord(record);
var serializer = get(this, 'serializer'),
mappings = serializer.mappingForType(type);
serializer.eachEmbeddedRecord(record, function(embeddedRecord, embeddedType) {
if (embeddedType === 'load') { return; }
this.didSaveRecord(store, embeddedRecord.constructor, embeddedRecord);
}, this);
if (payload) {
var loader = DS.loaderFor(store);
serializer.extract(loader, payload, type);
}
},
/**
Acknowledges that the adapter has finished updating a record.
Your adapter should call this method from `updateRecord` when it
has updated a record to its persistent storage and received an
acknowledgement.
If the persistent storage returns a new payload in response to the
update, pass the payload as the fourth parameter.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} record
@param {any} payload
*/
didUpdateRecord: function() {
this.didSaveRecord.apply(this, arguments);
},
/**
Acknowledges that the adapter has finished deleting a record.
Your adapter should call this method from `deleteRecord` when it
has deleted a record from its persistent storage and received an
acknowledgement.
If the persistent storage returns a new payload in response to the
deletion, pass the payload as the fourth parameter.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} record
@param {any} payload
*/
didDeleteRecord: function() {
this.didSaveRecord.apply(this, arguments);
},
/**
Acknowledges that the adapter has finished updating or deleting
multiple records.
Your adapter should call this method from its `updateRecords` or
`deleteRecords` when it has updated or deleted multiple records
to its persistent storage and received an acknowledgement.
If the persistent storage returns a new payload in response to the
creation, pass the payload as the fourth parameter.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} records
@param {any} payload
*/
didSaveRecords: function(store, type, records, payload) {
records.forEach(function(record) {
store.didSaveRecord(record);
}, this);
if (payload) {
var loader = DS.loaderFor(store);
get(this, 'serializer').extractMany(loader, payload, type);
}
},
/**
Acknowledges that the adapter has finished updating multiple records.
Your adapter should call this method from its `updateRecords` when
it has updated multiple records to its persistent storage and
received an acknowledgement.
If the persistent storage returns a new payload in response to the
update, pass the payload as the fourth parameter.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} records
@param {any} payload
*/
didUpdateRecords: function() {
this.didSaveRecords.apply(this, arguments);
},
/**
Acknowledges that the adapter has finished updating multiple records.
Your adapter should call this method from its `deleteRecords` when
it has deleted multiple records to its persistent storage and
received an acknowledgement.
If the persistent storage returns a new payload in response to the
deletion, pass the payload as the fourth parameter.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} records
@param {any} payload
*/
didDeleteRecords: function() {
this.didSaveRecords.apply(this, arguments);
},
/**
Loads the response to a request for a record by ID.
Your adapter should call this method from its `find` method
with the response from the backend.
You should pass the same ID to this method that was given
to your find method so that the store knows which record
to associate the new data with.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {any} payload
@param {String} id
*/
didFindRecord: function(store, type, payload, id) {
var loader = DS.loaderFor(store);
loader.load = function(type, data, prematerialized) {
prematerialized = prematerialized || {};
prematerialized.id = id;
return store.load(type, data, prematerialized);
};
get(this, 'serializer').extract(loader, payload, type);
},
/**
Loads the response to a request for all records by type.
You adapter should call this method from its `findAll`
method with the response from the backend.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {any} payload
*/
didFindAll: function(store, type, payload) {
var loader = DS.loaderFor(store),
serializer = get(this, 'serializer');
store.didUpdateAll(type);
serializer.extractMany(loader, payload, type);
},
/**
Loads the response to a request for records by query.
Your adapter should call this method from its `findQuery`
method with the response from the backend.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {any} payload
@param {DS.AdapterPopulatedRecordArray} recordArray
*/
didFindQuery: function(store, type, payload, recordArray) {
var loader = DS.loaderFor(store);
loader.populateArray = function(data) {
recordArray.load(data);
};
get(this, 'serializer').extractMany(loader, payload, type);
},
/**
Loads the response to a request for many records by ID.
You adapter should call this method from its `findMany`
method with the response from the backend.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {any} payload
*/
didFindMany: function(store, type, payload) {
var loader = DS.loaderFor(store);
get(this, 'serializer').extractMany(loader, payload, type);
},
/**
Notifies the store that a request to the backend returned
an error.
Your adapter should call this method to indicate that the
backend returned an error for a request.
@param {DS.Store} store
@param {subclass of DS.Model} type
@param {DS.Model} record
*/
didError: function(store, type, record) {
store.recordWasError(record);
},
dirtyRecordsForAttributeChange: function(dirtySet, record, attributeName, newValue, oldValue) {
if (newValue !== oldValue) {
// If this record is embedded, add its parent
// to the dirty set.
this.dirtyRecordsForRecordChange(dirtySet, record);
}
},
dirtyRecordsForRecordChange: function(dirtySet, record) {
dirtySet.add(record);
},
dirtyRecordsForBelongsToChange: function(dirtySet, child) {
this.dirtyRecordsForRecordChange(dirtySet, child);
},
dirtyRecordsForHasManyChange: function(dirtySet, parent) {
this.dirtyRecordsForRecordChange(dirtySet, parent);
},
/**
@private
This method recursively climbs the superclass hierarchy and
registers any class-registered transforms on the adapter's
serializer.
Once it registers a transform for a given type, it ignores
subsequent transforms for the same attribute type.
@param {Class} klass the DS.Adapter subclass to extract the
transforms from
@param {DS.Serializer} serializer the serializer to register
the transforms onto
@param {Object} seen a hash of attributes already seen
*/
registerSerializerTransforms: function(klass, serializer, seen) {
var transforms = klass._registeredTransforms, superclass, prop;
for (prop in transforms) {
if (!transforms.hasOwnProperty(prop) || prop in seen) { continue; }
seen[prop] = true;
serializer.registerTransform(prop, transforms[prop]);
}
if (superclass = klass.superclass) {
this.registerSerializerTransforms(superclass, serializer, seen);
}
},
/**
@private
This method recursively climbs the superclass hierarchy and
registers any class-registered mappings on the adapter's
serializer.
@param {Class} klass the DS.Adapter subclass to extract the
transforms from
@param {DS.Serializer} serializer the serializer to register the
mappings onto
*/
registerSerializerMappings: function(serializer) {
var mappings = this._attributesMap,
configurations = this._configurationsMap;
mappings.forEach(serializer.map, serializer);
configurations.forEach(serializer.configure, serializer);
},
/**
The `find()` method is invoked when the store is asked for a record that
has not previously been loaded. In response to `find()` being called, you
should query your persistence layer for a record with the given ID. Once
found, you can asynchronously call the store's `load()` method to load
the record.
Here is an example `find` implementation:
find: function(store, type, id) {
var url = type.url;
url = url.fmt(id);
jQuery.getJSON(url, function(data) {
// data is a hash of key/value pairs. If your server returns a
// root, simply do something like:
// store.load(type, id, data.person)
store.load(type, id, data);
});
}
*/
find: null,
serializer: DS.JSONSerializer,
registerTransform: function(attributeType, transform) {
get(this, 'serializer').registerTransform(attributeType, transform);
},
/**
A public method that allows you to register an enumerated
type on your adapter. This is useful if you want to utilize
a text representation of an integer value.
Eg: Say you want to utilize "low","medium","high" text strings
in your app, but you want to persist those as 0,1,2 in your backend.
You would first register the transform on your adapter instance:
adapter.registerEnumTransform('priority', ['low', 'medium', 'high']);
You would then refer to the 'priority' DS.attr in your model:
App.Task = DS.Model.extend({
priority: DS.attr('priority')
});
And lastly, you would set/get the text representation on your model instance,
but the transformed result will be the index number of the type.
App: myTask.get('priority') => 'low'
Server Response / Load: { myTask: {priority: 0} }
@param {String} type of the transform
@param {Array} array of String objects to use for the enumerated values.
This is an ordered list and the index values will be used for the transform.
*/
registerEnumTransform: function(attributeType, objects) {
get(this, 'serializer').registerEnumTransform(attributeType, objects);
},
/**
If the globally unique IDs for your records should be generated on the client,
implement the `generateIdForRecord()` method. This method will be invoked
each time you create a new record, and the value returned from it will be
assigned to the record's `primaryKey`.
Most traditional REST-like HTTP APIs will not use this method. Instead, the ID
of the record will be set by the server, and your adapter will update the store
with the new ID when it calls `didCreateRecord()`. Only implement this method if
you intend to generate record IDs on the client-side.
The `generateIdForRecord()` method will be invoked with the requesting store as
the first parameter and the newly created record as the second parameter:
generateIdForRecord: function(store, record) {
var uuid = App.generateUUIDWithStatisticallyLowOddsOfCollision();
return uuid;
}
*/
generateIdForRecord: null,
materialize: function(record, data, prematerialized) {
get(this, 'serializer').materialize(record, data, prematerialized);
},
serialize: function(record, options) {
return get(this, 'serializer').serialize(record, options);
},
extractId: function(type, data) {
return get(this, 'serializer').extractId(type, data);
},
groupByType: function(enumerable) {
var map = Ember.MapWithDefault.create({
defaultValue: function() { return Ember.OrderedSet.create(); }
});
enumerable.forEach(function(item) {
map.get(item.constructor).add(item);
});
return map;
},
commit: function(store, commitDetails) {
this.save(store, commitDetails);
},
save: function(store, commitDetails) {
var adapter = this;
function filter(records) {
var filteredSet = Ember.OrderedSet.create();
records.forEach(function(record) {
if (adapter.shouldSave(record)) {
filteredSet.add(record);
}
});
return filteredSet;
}
this.groupByType(commitDetails.created).forEach(function(type, set) {
this.createRecords(store, type, filter(set));
}, this);
this.groupByType(commitDetails.updated).forEach(function(type, set) {
this.updateRecords(store, type, filter(set));
}, this);
this.groupByType(commitDetails.deleted).forEach(function(type, set) {
this.deleteRecords(store, type, filter(set));
}, this);
},
shouldSave: Ember.K,
createRecords: function(store, type, records) {
records.forEach(function(record) {
this.createRecord(store, type, record);
}, this);
},
updateRecords: function(store, type, records) {
records.forEach(function(record) {
this.updateRecord(store, type, record);
}, this);
},
deleteRecords: function(store, type, records) {
records.forEach(function(record) {
this.deleteRecord(store, type, record);
}, this);
},
findMany: function(store, type, ids) {
ids.forEach(function(id) {
this.find(store, type, id);
}, this);
}
});
DS.Adapter.reopenClass({
registerTransform: function(attributeType, transform) {
var registeredTransforms = this._registeredTransforms || {};
registeredTransforms[attributeType] = transform;
this._registeredTransforms = registeredTransforms;
},
map: DS._Mappable.generateMapFunctionFor('attributes', function(key, newValue, map) {
var existingValue = map.get(key);
merge(existingValue, newValue);
}),
configure: DS._Mappable.generateMapFunctionFor('configurations', function(key, newValue, map) {
var existingValue = map.get(key);
// If a mapping configuration is provided, peel it off and apply it
// using the DS.Adapter.map API.
var mappings = newValue && newValue.mappings;
if (mappings) {
this.map(key, mappings);
delete newValue.mappings;
}
merge(existingValue, newValue);
}),
resolveMapConflict: function(oldValue, newValue, mappingsKey) {
merge(newValue, oldValue);
return newValue;
}
});
})();
(function() {
var get = Ember.get, set = Ember.set;
DS.FixtureSerializer = DS.Serializer.extend({
deserializeValue: function(value, attributeType) {
return value;
},
serializeValue: function(value, attributeType) {
return value;
},
addId: function(data, key, id) {
data[key] = id;
},
addAttribute: function(hash, key, value) {
hash[key] = value;
},
addBelongsTo: function(hash, record, key, relationship) {
var id = get(record, relationship.key+'.id');
if (!Ember.isNone(id)) { hash[key] = id; }
},
addHasMany: function(hash, record, key, relationship) {
var ids = get(record, relationship.key).map(function(item) {
return item.get('id');
});
hash[relationship.key] = ids;
},
/**
@private
Creates an empty hash that will be filled in by the hooks called from the
`serialize()` method.
@return {Object}
*/
createSerializedForm: function() {
return {};
},
extract: function(loader, fixture, type, record) {
if (record) { loader.updateId(record, fixture); }
this.extractRecordRepresentation(loader, type, fixture);
},
extractMany: function(loader, fixtures, type, records) {
var objects = fixtures, references = [];
if (records) { records = records.toArray(); }
for (var i = 0; i < objects.length; i++) {
if (records) { loader.updateId(records[i], objects[i]); }
var reference = this.extractRecordRepresentation(loader, type, objects[i]);
references.push(reference);
}
loader.populateArray(references);
},
extractId: function(type, hash) {
var primaryKey = this._primaryKey(type);
if (hash.hasOwnProperty(primaryKey)) {
// Ensure that we coerce IDs to strings so that record
// IDs remain consistent between application runs; especially
// if the ID is serialized and later deserialized from the URL,
// when type information will have been lost.
return hash[primaryKey]+'';
} else {
return null;
}
},
extractAttribute: function(type, hash, attributeName) {
var key = this._keyForAttributeName(type, attributeName);
return hash[key];
},
extractHasMany: function(type, hash, key) {
return hash[key];
},
extractBelongsTo: function(type, hash, key) {
return hash[key];
}
});
})();
(function() {
var get = Ember.get, fmt = Ember.String.fmt,
dump = Ember.get(window, 'JSON.stringify') || function(object) { return object.toString(); };
/**
`DS.FixtureAdapter` is an adapter that loads records from memory.
Its primarily used for development and testing. You can also use
`DS.FixtureAdapter` while working on the API but are not ready to
integrate yet. It is a fully functioning adapter. All CRUD methods
are implemented. You can also implement query logic that a remote
system would do. Its possible to do develop your entire application
with `DS.FixtureAdapter`.
*/
DS.FixtureAdapter = DS.Adapter.extend({
simulateRemoteResponse: true,
latency: 50,
serializer: DS.FixtureSerializer,
/*
Implement this method in order to provide data associated with a type
*/
fixturesForType: function(type) {
if (type.FIXTURES) {
var fixtures = Ember.A(type.FIXTURES);
return fixtures.map(function(fixture){
if(!fixture.id){
throw new Error(fmt('the id property must be defined for fixture %@', [dump(fixture)]));
}
fixture.id = fixture.id + '';
return fixture;
});
}
return null;
},
/*
Implement this method in order to query fixtures data
*/
queryFixtures: function(fixtures, query, type) {
Ember.assert('Not implemented: You must override the DS.FixtureAdapter::queryFixtures method to support querying the fixture store.');
},
updateFixtures: function(type, fixture) {
if(!type.FIXTURES) {
type.FIXTURES = [];
}
var fixtures = type.FIXTURES;
this.deleteLoadedFixture(type, fixture);
fixtures.push(fixture);
},
/*
Implement this method in order to provide provide json for CRUD methods
*/
mockJSON: function(type, record) {
return this.serialize(record, { includeId: true });
},
/*
Adapter methods
*/
generateIdForRecord: function(store, record) {
return Ember.guidFor(record);
},
find: function(store, type, id) {
var fixtures = this.fixturesForType(type),
fixture;
Ember.warn("Unable to find fixtures for model type " + type.toString(), fixtures);
if (fixtures) {
fixture = Ember.A(fixtures).findProperty('id', id);
}
if (fixture) {
this.simulateRemoteCall(function() {
this.didFindRecord(store, type, fixture, id);
}, this);
}
},
findMany: function(store, type, ids) {
var fixtures = this.fixturesForType(type);
Ember.assert("Unable to find fixtures for model type "+type.toString(), !!fixtures);
if (fixtures) {
fixtures = fixtures.filter(function(item) {
return ids.indexOf(item.id) !== -1;
});
}
if (fixtures) {
this.simulateRemoteCall(function() {
this.didFindMany(store, type, fixtures);
}, this);
}
},
findAll: function(store, type) {
var fixtures = this.fixturesForType(type);
Ember.assert("Unable to find fixtures for model type "+type.toString(), !!fixtures);
this.simulateRemoteCall(function() {
this.didFindAll(store, type, fixtures);
}, this);
},
findQuery: function(store, type, query, array) {
var fixtures = this.fixturesForType(type);
Ember.assert("Unable to find fixtures for model type "+type.toString(), !!fixtures);
fixtures = this.queryFixtures(fixtures, query, type);
if (fixtures) {
this.simulateRemoteCall(function() {
this.didFindQuery(store, type, fixtures, array);
}, this);
}
},
createRecord: function(store, type, record) {
var fixture = this.mockJSON(type, record);
this.updateFixtures(type, fixture);
this.simulateRemoteCall(function() {
this.didCreateRecord(store, type, record, fixture);
}, this);
},
updateRecord: function(store, type, record) {
var fixture = this.mockJSON(type, record);
this.updateFixtures(type, fixture);
this.simulateRemoteCall(function() {
this.didUpdateRecord(store, type, record, fixture);
}, this);
},
deleteRecord: function(store, type, record) {
var fixture = this.mockJSON(type, record);
this.deleteLoadedFixture(type, fixture);
this.simulateRemoteCall(function() {
this.didDeleteRecord(store, type, record);
}, this);
},
/*
@private
*/
deleteLoadedFixture: function(type, record) {
var id = this.extractId(type, record);
var existingFixture = this.findExistingFixture(type, record);
if(existingFixture) {
var index = type.FIXTURES.indexOf(existingFixture);
type.FIXTURES.splice(index, 1);
return true;
}
},
findExistingFixture: function(type, record) {
var fixtures = this.fixturesForType(type);
var id = this.extractId(type, record);
return this.findFixtureById(fixtures, id);
},
findFixtureById: function(fixtures, id) {
var adapter = this;
return Ember.A(fixtures).find(function(r) {
if(''+get(r, 'id') === ''+id) {
return true;
} else {
return false;
}
});
},
simulateRemoteCall: function(callback, context) {
if (get(this, 'simulateRemoteResponse')) {
// Schedule with setTimeout
Ember.run.later(context, callback, get(this, 'latency'));
} else {
// Asynchronous, but at the of the runloop with zero latency
Ember.run.once(context, callback);
}
}
});
})();
(function() {
DS.RESTSerializer = DS.JSONSerializer.extend({
keyForAttributeName: function(type, name) {
return Ember.String.decamelize(name);
},
keyForBelongsTo: function(type, name) {
var key = this.keyForAttributeName(type, name);
if (this.embeddedType(type, name)) {
return key;
}
return key + "_id";
},
keyForHasMany: function(type, name) {
var key = this.keyForAttributeName(type, name);
if (this.embeddedType(type, name)) {
return key;
}
return this.singularize(key) + "_ids";
}
});
})();
(function() {
/*global jQuery*/
var get = Ember.get, set = Ember.set, merge = Ember.merge;
/**
The REST adapter allows your store to communicate with an HTTP server by
transmitting JSON via XHR. Most Ember.js apps that consume a JSON API
should use the REST adapter.
This adapter is designed around the idea that the JSON exchanged with
the server should be conventional.
## JSON Structure
The REST adapter expects the JSON returned from your server to follow
these conventions.
### Object Root
The JSON payload should be an object that contains the record inside a
root property. For example, in response to a `GET` request for
`/posts/1`, the JSON should look like this:
```js
{
"post": {
title: "I'm Running to Reform the W3C's Tag",
author: "Yehuda Katz"
}
}
```
### Conventional Names
Attribute names in your JSON payload should be the underscored versions of
the attributes in your Ember.js models.
For example, if you have a `Person` model:
```js
App.Person = DS.Model.extend({
firstName: DS.attr('string'),
lastName: DS.attr('string'),
occupation: DS.attr('string')
});
```
The JSON returned should look like this:
```js
{
"person": {
"first_name": "Barack",
"last_name": "Obama",
"occupation": "President"
}
}
```
*/
DS.RESTAdapter = DS.Adapter.extend({
bulkCommit: false,
since: 'since',
serializer: DS.RESTSerializer,
init: function() {
this._super.apply(this, arguments);
},
shouldSave: function(record) {
var reference = get(record, '_reference');
return !reference.parent;
},
createRecord: function(store, type, record) {
var root = this.rootForType(type);
var data = {};
data[root] = this.serialize(record, { includeId: true });
this.ajax(this.buildURL(root), "POST", {
data: data,
context: this,
success: function(json) {
Ember.run(this, function(){
this.didCreateRecord(store, type, record, json);
});
},
error: function(xhr) {
this.didError(store, type, record, xhr);
}
});
},
dirtyRecordsForRecordChange: function(dirtySet, record) {
this._dirtyTree(dirtySet, record);
},
dirtyRecordsForHasManyChange: function(dirtySet, record, relationship) {
var embeddedType = get(this, 'serializer').embeddedType(record.constructor, relationship.secondRecordName);
if (embeddedType === 'always') {
relationship.childReference.parent = relationship.parentReference;
this._dirtyTree(dirtySet, record);
}
},
_dirtyTree: function(dirtySet, record) {
dirtySet.add(record);
get(this, 'serializer').eachEmbeddedRecord(record, function(embeddedRecord, embeddedType) {
if (embeddedType !== 'always') { return; }
if (dirtySet.has(embeddedRecord)) { return; }
this._dirtyTree(dirtySet, embeddedRecord);
}, this);
var reference = record.get('_reference');
if (reference.parent) {
var store = get(record, 'store');
var parent = store.recordForReference(reference.parent);
this._dirtyTree(dirtySet, parent);
}
},
createRecords: function(store, type, records) {
if (get(this, 'bulkCommit') === false) {
return this._super(store, type, records);
}
var root = this.rootForType(type),
plural = this.pluralize(root);
var data = {};
data[plural] = [];
records.forEach(function(record) {
data[plural].push(this.serialize(record, { includeId: true }));
}, this);
this.ajax(this.buildURL(root), "POST", {
data: data,
context: this,
success: function(json) {
Ember.run(this, function(){
this.didCreateRecords(store, type, records, json);
});
}
});
},
updateRecord: function(store, type, record) {
var id = get(record, 'id');
var root = this.rootForType(type);
var data = {};
data[root] = this.serialize(record);
this.ajax(this.buildURL(root, id), "PUT", {
data: data,
context: this,
success: function(json) {
Ember.run(this, function(){
this.didSaveRecord(store, type, record, json);
});
},
error: function(xhr) {
this.didError(store, type, record, xhr);
}
});
},
updateRecords: function(store, type, records) {
if (get(this, 'bulkCommit') === false) {
return this._super(store, type, records);
}
var root = this.rootForType(type),
plural = this.pluralize(root);
var data = {};
data[plural] = [];
records.forEach(function(record) {
data[plural].push(this.serialize(record, { includeId: true }));
}, this);
this.ajax(this.buildURL(root, "bulk"), "PUT", {
data: data,
context: this,
success: function(json) {
Ember.run(this, function(){
this.didSaveRecords(store, type, records, json);
});
}
});
},
deleteRecord: function(store, type, record) {
var id = get(record, 'id');
var root = this.rootForType(type);
this.ajax(this.buildURL(root, id), "DELETE", {
context: this,
success: function(json) {
Ember.run(this, function(){
this.didSaveRecord(store, type, record, json);
});
}
});
},
deleteRecords: function(store, type, records) {
if (get(this, 'bulkCommit') === false) {
return this._super(store, type, records);
}
var root = this.rootForType(type),
plural = this.pluralize(root),
serializer = get(this, 'serializer');
var data = {};
data[plural] = [];
records.forEach(function(record) {
data[plural].push(serializer.serializeId( get(record, 'id') ));
});
this.ajax(this.buildURL(root, 'bulk'), "DELETE", {
data: data,
context: this,
success: function(json) {
Ember.run(this, function(){
this.didSaveRecords(store, type, records, json);
});
}
});
},
find: function(store, type, id) {
var root = this.rootForType(type);
this.ajax(this.buildURL(root, id), "GET", {
success: function(json) {
Ember.run(this, function(){
this.didFindRecord(store, type, json, id);
});
}
});
},
findAll: function(store, type, since) {
var root = this.rootForType(type);
this.ajax(this.buildURL(root), "GET", {
data: this.sinceQuery(since),
success: function(json) {
Ember.run(this, function(){
this.didFindAll(store, type, json);
});
}
});
},
findQuery: function(store, type, query, recordArray) {
var root = this.rootForType(type);
this.ajax(this.buildURL(root), "GET", {
data: query,
success: function(json) {
Ember.run(this, function(){
this.didFindQuery(store, type, json, recordArray);
});
}
});
},
findMany: function(store, type, ids, owner) {
var root = this.rootForType(type);
ids = this.serializeIds(ids);
this.ajax(this.buildURL(root), "GET", {
data: {ids: ids},
success: function(json) {
Ember.run(this, function(){
this.didFindMany(store, type, json);
});
}
});
},
/**
@private
This method serializes a list of IDs using `serializeId`
@returns {Array} an array of serialized IDs
*/
serializeIds: function(ids) {
var serializer = get(this, 'serializer');
return Ember.EnumerableUtils.map(ids, function(id) {
return serializer.serializeId(id);
});
},
didError: function(store, type, record, xhr) {
if (xhr.status === 422) {
var data = JSON.parse(xhr.responseText);
store.recordWasInvalid(record, data['errors']);
} else {
this._super.apply(this, arguments);
}
},
ajax: function(url, type, hash) {
hash.url = url;
hash.type = type;
hash.dataType = 'json';
hash.contentType = 'application/json; charset=utf-8';
hash.context = this;
if (hash.data && type !== 'GET') {
hash.data = JSON.stringify(hash.data);
}
jQuery.ajax(hash);
},
url: "",
rootForType: function(type) {
var serializer = get(this, 'serializer');
return serializer.rootForType(type);
},
pluralize: function(string) {
var serializer = get(this, 'serializer');
return serializer.pluralize(string);
},
buildURL: function(record, suffix) {
var url = [this.url];
Ember.assert("Namespace URL (" + this.namespace + ") must not start with slash", !this.namespace || this.namespace.toString().charAt(0) !== "/");
Ember.assert("Record URL (" + record + ") must not start with slash", !record || record.toString().charAt(0) !== "/");
Ember.assert("URL suffix (" + suffix + ") must not start with slash", !suffix || suffix.toString().charAt(0) !== "/");
if (this.namespace !== undefined) {
url.push(this.namespace);
}
url.push(this.pluralize(record));
if (suffix !== undefined) {
url.push(suffix);
}
return url.join("/");
},
sinceQuery: function(since) {
var query = {};
query[get(this, 'since')] = since;
return since ? query : null;
}
});
})();
(function() {
var camelize = Ember.String.camelize,
capitalize = Ember.String.capitalize,
get = Ember.get,
map = Ember.ArrayPolyfills.map,
registeredTransforms;
var passthruTransform = {
serialize: function(value) { return value; },
deserialize: function(value) { return value; }
};
var defaultTransforms = {
string: passthruTransform,
boolean: passthruTransform,
number: passthruTransform
};
function camelizeKeys(json) {
var value;
for (var prop in json) {
value = json[prop];
delete json[prop];
json[camelize(prop)] = value;
}
}
function munge(json, callback) {
callback(json);
}
function applyTransforms(json, type, transformType) {
var transforms = registeredTransforms[transformType];
Ember.assert("You are trying to apply the '" + transformType + "' transforms, but you didn't register any transforms with that name", transforms);
get(type, 'attributes').forEach(function(name, attribute) {
var attributeType = attribute.type,
value = json[name];
var transform = transforms[attributeType] || defaultTransforms[attributeType];
Ember.assert("Your model specified the '" + attributeType + "' type for the '" + name + "' attribute, but no transform for that type was registered", transform);
json[name] = transform.deserialize(value);
});
}
function ObjectProcessor(json, type, store) {
this.json = json;
this.type = type;
this.store = store;
}
ObjectProcessor.prototype = {
camelizeKeys: function() {
camelizeKeys(this.json);
return this;
},
munge: function(callback) {
munge(this.json, callback);
return this;
},
applyTransforms: function(transformType) {
applyTransforms(this.json, this.type, transformType);
return this;
}
};
function LoadObjectProcessor() {
ObjectProcessor.apply(this, arguments);
}
LoadObjectProcessor.prototype = Ember.create(ObjectProcessor.prototype);
LoadObjectProcessor.prototype.load = function() {
this.store.load(this.type, {}, this.json);
};
function loadObjectProcessorFactory(store, type) {
return function(json) {
return new LoadObjectProcessor(json, type, store);
};
}
function ArrayProcessor(json, type, array, store) {
this.json = json;
this.type = type;
this.array = array;
this.store = store;
}
ArrayProcessor.prototype = {
load: function() {
var store = this.store,
type = this.type;
var references = this.json.map(function(object) {
return store.load(type, {}, object);
});
this.array.load(references);
},
camelizeKeys: function() {
this.json.forEach(camelizeKeys);
return this;
},
munge: function(callback) {
this.json.forEach(function(object) {
munge(object, callback);
});
return this;
},
applyTransforms: function(transformType) {
var type = this.type;
this.json.forEach(function(object) {
applyTransforms(object, type, transformType);
});
return this;
}
};
function arrayProcessorFactory(store, type, array) {
return function(json) {
return new ArrayProcessor(json, type, array, store);
};
}
var HasManyProcessor = function(json, store, record, relationship) {
this.json = json;
this.store = store;
this.record = record;
this.type = record.constructor;
this.relationship = relationship;
};
HasManyProcessor.prototype = Ember.create(ArrayProcessor.prototype);
HasManyProcessor.prototype.load = function() {
var store = this.store;
var ids = map.call(this.json, function(obj) { return obj.id; });
store.loadMany(this.relationship.type, this.json);
store.loadHasMany(this.record, this.relationship.key, ids);
};
function hasManyProcessorFactory(store, record, relationship) {
return function(json) {
return new HasManyProcessor(json, store, record, relationship);
};
}
function SaveProcessor(record, store, type, includeId) {
this.record = record;
ObjectProcessor.call(this, record.toJSON({ includeId: includeId }), type, store);
}
SaveProcessor.prototype = Ember.create(ObjectProcessor.prototype);
SaveProcessor.prototype.save = function(callback) {
callback(this.json);
};
function saveProcessorFactory(store, type, includeId) {
return function(record) {
return new SaveProcessor(record, store, type, includeId);
};
}
DS.BasicAdapter = DS.Adapter.extend({
find: function(store, type, id) {
var sync = type.sync;
Ember.assert("You are trying to use the BasicAdapter to find id '" + id + "' of " + type + " but " + type + ".sync was not found", sync);
Ember.assert("The sync code on " + type + " does not implement find(), but you are trying to find id '" + id + "'.", sync.find);
sync.find(id, loadObjectProcessorFactory(store, type));
},
findQuery: function(store, type, query, recordArray) {
var sync = type.sync;
Ember.assert("You are trying to use the BasicAdapter to query " + type + " but " + type + ".sync was not found", sync);
Ember.assert("The sync code on " + type + " does not implement query(), but you are trying to query " + type + ".", sync.query);
sync.query(query, arrayProcessorFactory(store, type, recordArray));
},
findHasMany: function(store, record, relationship, data) {
var name = capitalize(relationship.key),
sync = record.constructor.sync,
processor = hasManyProcessorFactory(store, record, relationship);
var options = {
relationship: relationship.key,
data: data
};
if (sync['find'+name]) {
sync['find' + name](record, options, processor);
} else if (sync.findHasMany) {
sync.findHasMany(record, options, processor);
} else {
Ember.assert("You are trying to use the BasicAdapter to find the " + relationship.key + " has-many relationship, but " + record.constructor + ".sync did not implement findHasMany or find" + name + ".", false);
}
},
createRecord: function(store, type, record) {
var sync = type.sync;
sync.createRecord(record, saveProcessorFactory(store, type));
},
updateRecord: function(store, type, record) {
var sync = type.sync;
sync.updateRecord(record, saveProcessorFactory(store, type, true));
},
deleteRecord: function(store, type, record) {
var sync = type.sync;
sync.deleteRecord(record, saveProcessorFactory(store, type, true));
}
});
DS.registerTransforms = function(kind, object) {
registeredTransforms[kind] = object;
};
DS.clearTransforms = function() {
registeredTransforms = {};
};
DS.clearTransforms();
})();
(function() {
})();
(function() {
//Copyright (C) 2011 by Living Social, Inc.
//Permission is hereby granted, free of charge, to any person obtaining a copy of
//this software and associated documentation files (the "Software"), to deal in
//the Software without restriction, including without limitation the rights to
//use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
//of the Software, and to permit persons to whom the Software is furnished to do
//so, subject to the following conditions:
//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.
})();
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