Peepcode ember screencast fixtures don't work with ember-data revision 12

Ember Data
1

App.Table.find(4).get(‘tab’).get(‘tabItems’).get(‘length’) is 0

What needs to change for 12?

    // Models
    App.Store = DS.Store.extend({
      revision: 12,
      adapter: 'DS.FixtureAdapter'
    });

    App.Table = DS.Model.extend({
      tab: DS.belongsTo('App.Tab')
    });

    App.Tab = DS.Model.extend({
      tabItems: DS.hasMany('App.TabItem'),
      cents: function() {
        return this.get('tabItems').getEach('cents').reduce(function(accum, item) {
          return accum + item;
        }, 0);
      }.property('tabItems.@each.cents')
    });

    App.TabItem = DS.Model.extend({
      cents: DS.attr('number'),
      food: DS.belongsTo('App.Food')
    });

    App.Food = DS.Model.extend({
      name: DS.attr('string'),
      imageUrl: DS.attr('string'),
      cents: DS.attr('number')
    });

    App.Table.FIXTURES = [{
      id: 1,
      tab: 1
    }, {
      id: 2,
      tab: 2
    }, {
      id: 3,
      tab: 3
    }, {
      id: 4,
      tab: 4
    }, {
      id: 5,
      tab: 5
    }, {
      id: 6,
      tab: 6
    }];

    App.Tab.FIXTURES = [{
      id: 1,
      tabItems: []
    }, {
      id: 2,
      tabItems: []
    }, {
      id: 3,
      tabItems: []
    }, {
      id: 4,
      tabItems: [400, 401, 402, 403, 404]
    }, {
      id: 5,
      tabItems: []
    }, {
      id: 6,
      tabItems: []
    }];

    App.TabItem.FIXTURES = [{
      id: 400,
      cents: 1500,
      food: 1
    }, {
      id: 401,
      cents: 300,
      food: 2
    }, {
      id: 402,
      cents: 700,
      food: 3
    }, {
      id: 403,
      cents: 950,
      food: 4
    }, {
      id: 404,
      cents: 2000,
      food: 5
    }];

    App.Food.FIXTURES = [{
      id: 1,
      name: 'Pizza',
      imageUrl: 'img/pizza.png',
      cents: 1500
    }, {
      id: 2,
      name: 'Pancakes',
      imageUrl: 'img/pancakes.png',
      cents: 300
    }, {
      id: 3,
      name: 'Fries',
      imageUrl: 'img/fries.png',
      cents: 700
    }, {
      id: 4,
      name: 'Hot Dog',
      imageUrl: 'img/hotdog.png',
      cents: 950
    }, {
      id: 5,
      name: 'Birthday Cake',
      imageUrl: 'img/birthdaycake.png',
      cents: 2000
    }];
3

Yea I’m wondering what changed in rev 12 too. I can’t get associations to work.