title: Ember Not Rendering Embedded Data
body: <p>I setup an app that runs fine with the Fixture Adapter on.</p>
  
  <p>This is a template that I'm using to render:</p>
  
  <pre><code>  &lt;div class="large-7 columns" id="song-list"&gt; 
      &lt;div class="playlist-meta row"&gt;
        &lt;div class="large-12 columns"&gt;    
          &lt;h4 class="subheader"&gt;Playlist&lt;/h4&gt;    
          &lt;h1 class="playlist-title"&gt;{{controller.name}}&lt;/h1&gt; 
        &lt;/div&gt;
      &lt;/div&gt;
  
      {{#view App.SortableView}}  
      {{#each song in controller.songs}}
        &lt;li class="row song"&gt;
          &lt;button {{action "playSong" song}} class="toggle-play"&gt;&lt;span class="entypo play"&gt;&lt;/span&gt;&lt;/button&gt;
          &lt;h4 class="subheader song-artist"&gt;&lt;a href="#"&gt;{{song.artist}}&lt;/a&gt;&lt;/h3&gt;
          &lt;h3 class="song-title"&gt;&lt;a href="#"&gt;{{song.name}}&lt;/a&gt;&lt;/h3&gt;
        &lt;/li&gt;    
      {{/each}}
      {{/view}}
    &lt;/div&gt;
  </code></pre>
  
  <p>When I use the REST Adapter, however, the songs do not render.  The playlist name itself still renders, but not the songs.</p>
  
  <p>This is what is being returned to me in terms of JSON:</p>
  
  <pre><code>{"playlist":{"id":1,"name":"playlist","songs":[{"id":1,"name":"Song Name","artist":"Song Artist","soundcloud":"/tracks/1"}]}}
  </code></pre>
  
  <p>Model as defined when I was using Fixture data:</p>
  
  <pre><code>App.Playlist = DS.Model.extend({
    name: DS.attr('string'),
    songs: DS.hasMany('App.Song'),
  });
  
  App.Song = DS.Model.extend({
    name: DS.attr('string'),
    artist: DS.attr('string'),
    soundcloud: DS.attr('string'),
    playlist: DS.hasMany('App.Playlist'),
  });
  
  App.Playlist.FIXTURES = [
    {
      id: 1,
      name: 'Playlist Name',
      songs: [1, 2, 3],
    }];
  App.Song.FIXTURES = [
    {
      id: 1,
      name: 'Song Name',
      artist: 'Song Artist',
      soundcloud: '/tracks/12345',
    }];
  </code></pre>