Fixtures in combination with Ember CLI. Read more about it here: http://edgycircle.com/blog/2014-using-fixtures-in-combination-with-ember-cli/

gistfile1.js

// The incorrect way of defining fixtures.
var Post = DS.Model.extend({
  title: DS.attr('string'),
  body: DS.attr('string')
});

Post.FIXTURES = [
  { id: 1, title: 'Title A', body: 'Body A' },
  { id: 2, title: 'Title B', body: 'Body B' }
];

export default Post

gistfile2.js

// The correct way of defining fixtures.
var Post = DS.Model.extend({
  title: DS.attr('string'),
  body: DS.attr('string')
});

Post.reopenClass({
  FIXTURES: [
    { id: 1, title: 'Title A', body: 'Body A' },
    { id: 2, title: 'Title B', body: 'Body B' }
  ]
});

export default Post