Backbone MongoModel: embbedded models and collections.

backbone.mongomodel.js

Backbone.MongoModel = Backbone.Model.extend({
  idAttribute: '_id',
  embedded: {},
  parse: function(i){
    _.each(this.embedded, function(klass,k){ i[k] = new klass(i[k], {parse: true}) })
    return i
  },
  toJSON: function(){
    return _.reduce(this.attributes, function(o,v,k){ o[k] = v && v.toJSON ? v.toJSON() : v; return o }, {})
  }
})

example.js

var User = Backbone.MongoModel.extend({
  embedded: {
    auth_tokens: Backbone.Collection,
    profile: Backbone.Model
  }
})

var data = {
  _id: '123',
  email: 'bruce@wayne-enterprises.com', 
  profile: {
    firstname: 'Bruce', 
    lastname: 'Wayne'
  },
  auth_tokens: [
    {provider: 'github', uid: '1234'}, 
    {provider: 'twitter', uid: '5678'}
  ]
}

var user = new User(data, {parse: true})

user.get('profile').get('firstname') // Bruce
user.get('auth_tokens').pluck('provider') // ["github", "twitter"]

user.toJSON()