1
 2var mongoose = require('mongoose')
 3var Schema = mongoose.Schema;
 4
 5console.log('Running mongoose version %s', mongoose.version);
 6
 7/**
 8 * Console schema
 9 */
10
11var consoleSchema = Schema({
12    name: String
13  , manufacturer: String
14  , released: Date
15})
16var Console = mongoose.model('Console', consoleSchema);
17
18/**
19 * Game schema
20 */
21
22var gameSchema = Schema({
23    name: String
24  , developer: String
25  , released: Date
26  , consoles: [{ type: Schema.Types.ObjectId, ref: 'Console' }]
27})
28var Game = mongoose.model('Game', gameSchema);
29
30/**
31 * Connect to the console database on localhost with
32 * the default port (27017)
33 */
34
35mongoose.connect('mongodb://localhost/console', function (err) {
36  // if we failed to connect, abort
37  if (err) throw err;
38
39  // we connected ok
40  createData();
41})
42
43/**
44 * Data generation
45 */
46
47function createData () {
48  Console.create({
49      name: 'Nintendo 64'
50    , manufacturer: 'Nintendo'
51    , released: 'September 29, 1996'
52  }, function (err, nintendo64) {
53    if (err) return done(err);
54
55    Game.create({
56        name: 'Legend of Zelda: Ocarina of Time'
57      , developer: 'Nintendo'
58      , released: new Date('November 21, 1998')
59      , consoles: [nintendo64]
60    }, function (err) {
61      if (err) return done(err);
62      example();
63    })
64  })
65}
66
67/**
68 * Population
69 */
70
71function example () {
72  Game
73  .findOne({ name: /^Legend of Zelda/ })
74  .populate('consoles')
75  .lean() // just return plain objects, not documents wrapped by mongoose
76  .exec(function (err, ocinara) {
77    if (err) return done(err);
78
79    console.log(
80        '"%s" was released for the %s on %s'
81      , ocinara.name
82      , ocinara.consoles[0].name
83      , ocinara.released.toLocaleDateString());
84
85    done();
86  })
87}
88
89function done (err) {
90  if (err) console.error(err);
91  Console.remove(function () {
92    Game.remove(function () {
93      mongoose.disconnect();
94    })
95  })
96}