katowulf

{
  "rules": {
 
    // REQUIRED FIELDS
    "example1" : {
      "$record": {
        // foo and bar are required fields that must always exist
        // this will reject writes to $record, as well as directly to $record/foo or $record/bar if they are null
        ".validate": "newData.hasChildren(['foo', 'bar'])"
      }

katowulf

var Firebase = require('firebase');
var rootRef = new Firebase("https://<YOUR-FIREBASE-APP>.firebaseio.com/");
var archiveRef = rootRef.child('path/to/archive');
var dataRef = rootRef.child('path/to/data');
var archiveTimestamp = Date.now() - 3600; // everything older than an hour

dataRef.orderByChild('<date field>').endAt(archiveTimestamp).once('value', function(snap) {
    snap.forEach(function(childSnap) {
         archiveRef.child( childSnap.key() ).set( childSnap.val(), function(err) {

katowulf

// Not all API methods are implemented in this proof
// See https://www.firebase.com/docs/web/api/query/
var FirebaseQueryWrapper = (function() {
  function FirebaseQueryWrapper(url) {
    this.ref = new Firebase(url);
    this.parms = {};
  }
  
  var proto = FirebaseQueryWrapper.prototype;

katowulf

var fb = new Firebase('https://<INSTANCE>.firebaseio.com');

var idxRef = fb.child('users/kato/companies');
var dataRef = fb.child('companies');

idxRef.on('child_added', function(userSnap) {
  dataRef.child(userSnap.key()).once('value', function(snap) {
    console.log('user ' + userSnap.key() + ' belongs to company ' + snap.key());
  });
});

katowulf

// this will be much more efficient than $watch()
app.factory('FilteredArray', function($firebaseArray) {
  function FilteredArray(ref, filterFn) {
    this.filterFn = filterFn;
    return $firebaseArray.call(this, ref);
  }
  FilteredArray.prototype.$$added = function(snap) {
    var rec = $firebaseArray.prototype.$$added.call(this, snap);
    if( !this.filterFn || this.filterFn(rec) ) {
      return rec;

katowulf

{
  "auctions": {
    "$auction_id":  {
      "current_bid":  { 
         ".validate": "newData.hasChildren(['uid', 'amount'])",
         "uid": {
            ".validate": "newData.val() === auth.uid"
         },
         "amount": {
           ".validate":  "newData.isNumber() && newData.val() > data.val() && newData.val() === root.child('auctions/'+$auction_id+'/bids/'+auth.uid+'/amount').val()"

katowulf

var DynamicPathMonitor = require('./DynamicPathMonitor');
 
// call this instead of new PathMonitor inside PathMonitor.process
function NestedPathMonitor(ref, factory) {
   this.factory = factory;
   this.paths = {};
   ref.on('child_added', this._add, this);
   ref.on('child_removed', this._remove, this);
}
 

katowulf

var app = angular.module('app', ['firebase']);

app.controller('ctrl', function($scope, $pageArray) {
  $scope.pageItems = $pageArray(ref, 'number');
});

app.factory('$pageArray', function($firebaseArray) {
  return function(ref, field) {
    // create a Paginate reference
    var pageRef = new Firebase.util.Paginate(ref, field, {maxCacheSize: 250});

katowulf

var app = angular.module('app', ['firebase']);

app.controller('ctrl', function($scope) {
  var ref = new Firebase('https://fbutil.firebaseio.com/paginate');
  $scope.scrollItems = $scrollArray(ref, 'number');
});

app.factory('$scrollArray', function($firebaseArray) {
  return function(ref, field) {
    // create a special scroll ref

katowulf

var app = angular.module('app', ['firebase', 'ui.grid', 'ui.grid.infiniteScroll']);

app.controller('ctrl', function($scope, $firebaseArray) {
  var baseRef = new Firebase('https://fbutil.firebaseio.com/paginate');
  var scrollRef = new Firebase.util.Scroll(baseRef, 'number');

  //$scope.data = $firebaseArray(scrollRef);
  $scope.opts = {
    columnDefs: [
      {name: '$id', displayName: 'ID'},