MongoDB Mongoose

Mongoose Study

MonGoose MonGoose 

Definitely not comprehensive. This is meant to be a basic memory aid with links to get more details. I'll add to it over time.

Install
$ npm install mongoose --save
Connect
const mongoose = require('mongoose');

const uri = process.env.MONGO_URI || 'mongodb://localhost/test';

mongoose.connect(uri, function(err, res) {
...
});
Defining a schema
const userSchema = new mongoose.Schema({
name: {
first: String,
last: { type: String, trim: true }
},
age: { type: Number, min: 0 },
posts: [ { title: String, url: String, date: Date } ],
updated: { type: Date, default: Date.now }
});
SchemaTypes
String
Number
Date
Buffer
Boolean
Mixed
ObjectId
Array
SchemaTypes
SchemaType API
SchemaType#default
SchemaType#validate
get
set
select

Notes
Mixed types and dates that are modified using JavaScript Date methods are not hooked into mongoose change tracking logic. To save changes, let mongoose know about them using markModified('path') before calling save.

Instantiating a model
A model is a constructor compiled from a schema. Model instances represent documents.

const User = mongoose.model('User', userSchema);

var u = new User({
name: {
first: 'Tony',
last: 'Pujals'
},
age: 99
});
Query
query

$where
query.$where('this.comments.length > 10 || this.name.length > 5')

// or

query.$where(function() {
return this.comments.length > 10 || this.name.length > 5;
});
mongoDB $where

$all
mongoose $all
mongoDB $all

$count
http://mongoosejs.com/docs/api.html#query_Query-count

$distinct
http://mongoosejs.com/docs/api.html#query_Query-distinct

#elemMatch
http://mongoosejs.com/docs/api.html#query_Query-elemMatch

#equals
http://mongoosejs.com/docs/api.html#query_Query-equals

#exec
http://mongoosejs.com/docs/api.html#query_Query-exec

#exists
http://mongoosejs.com/docs/api.html#query_Query-exists

#find
http://mongoosejs.com/docs/api.html#query_Query-find

findOne
http://mongoosejs.com/docs/api.html#query_Query-findOne

findOneAndRemove
http://mongoosejs.com/docs/api.html#query_Query-findOneAndRemove

findOneAndUpdate
http://mongoosejs.com/docs/api.html#query_Query-findOneAndUpdate

#gt
http://mongoosejs.com/docs/api.html#query_Query-gt

#gte
http://mongoosejs.com/docs/api.html#query_Query-gte

#hint
http://mongoosejs.com/docs/api.html#query_Query-hint

#in
http://mongoosejs.com/docs/api.html#query_Query-in

#lean
http://mongoosejs.com/docs/api.html#query_Query-lean

#limit
http://mongoosejs.com/docs/api.html#query_Query-limit

#lt
http://mongoosejs.com/docs/api.html#query_Query-lt

#lte
http://mongoosejs.com/docs/api.html#query_Query-lte

#maxScan
http://mongoosejs.com/docs/api.html#query_Query-maxScan

#merge
http://mongoosejs.com/docs/api.html#query_Query-merge

#mod
http://mongoosejs.com/docs/api.html#query_Query-mod

#ne
http://mongoosejs.com/docs/api.html#query_Query-ne

#nin
http://mongoosejs.com/docs/api.html#query_Query-nin

#nor
http://mongoosejs.com/docs/api.html#query_Query-nor

#or
http://mongoosejs.com/docs/api.html#query_Query-or

#populate
http://mongoosejs.com/docs/api.html#query_Query-populate

#read
http://mongoosejs.com/docs/api.html#query_Query-read

#regex
http://mongoosejs.com/docs/api.html#query_Query-regex

#remove
http://mongoosejs.com/docs/api.html#query_Query-remove

#select
http://mongoosejs.com/docs/api.html#query_Query-select

#setOptions
http://mongoosejs.com/docs/api.html#query_Query-setOptions

#size
http://mongoosejs.com/docs/api.html#query_Query-size

#skip
http://mongoosejs.com/docs/api.html#query_Query-skip

#slice
http://mongoosejs.com/docs/api.html#query_Query-slice

#snapshot
http://mongoosejs.com/docs/api.html#query_Query-snapshot

#sort
http://mongoosejs.com/docs/api.html#query_Query-sort

#stream
http://mongoosejs.com/docs/api.html#query_Query-stream

#tailable
http://mongoosejs.com/docs/api.html#query_Query-tailable

#toConstructor
http://mongoosejs.com/docs/api.html#query_Query-toConstructor

#update
http://mongoosejs.com/docs/api.html#query_Query-update

#where
http://mongoosejs.com/docs/api.html#query_Query-where