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<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
</head>
<body>
  
​
<script type="text/x-handlebars">  
  {{render "artists"}}
</script>
​
<script type="text/x-handlebars" data-template-name="artists">
    {{#each artist in controller}}
      <h3>{{ artist.name }}  
        <button {{action 'toggleExpanded' on='click'}}>toggle expand</button>
      </h3>      
      {{#if artist.isExpanded}}
        {{render 'albums' artist.albums}}
      {{/if}}
    {{/each}}
​
</script>
​
<script type="text/x-handlebars" data-template-name="albums">   
  {{#each album in  controller}}                
    <h5>{{ album.year }} - {{ album.name }}
      <button {{action 'toggleExpanded' on='click'}}>toggle expand</button>
    </h5>
    {{#if controllers.artist.isAlbumsExpanded}}
      {{render 'songs' album.songs}}
    {{/if}}
  {{/each}}
  
</script>
​
<script type="text/x-handlebars" data-template-name='songs'>
    {{#each song in controller}}
        <h6>{{song.tracknumber}} - {{song.name}}</h6>        
    {{/each}}
</script>
​
  
  
  
​
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.0.0/handlebars.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/ember.js/1.1.2/ember.min.js"></script>
​
<!--script src="http://emberjs.com.s3.amazonaws.com/getting-started/ember-data.js"></script-->
<script src="https://rawgithub.com/components/ember-data/master/ember-data.min.js"></script>
  
</body>
​
  
  
</html>
 
window.App = Ember.Application.create();
​
​
App.ApplicationAdapter = DS.FixtureAdapter.extend();
​
App.ApplicationRoute = Ember.Route.extend({
  setupController: function(){
    this.controllerFor('artists').set('model', this.store.find('artist')) ;
    }
});
​
​
App.ArtistsController = Ember.ArrayController.extend({
    itemController: 'artist'
});
​
App.ArtistController = Ember.ObjectController.extend({
    isExpanded: false,
    isAlbumsExpanded: false, 
    actions: {
        toggleExpanded: function() {
          this.toggleProperty('isExpanded');           
        }
    }
});
​
App.AlbumsController = Ember.ArrayController.extend({    
    itemController: 'album'
});
​
App.AlbumController = Ember.ObjectController.extend({
  needs: ['artist'],
    actions: {
        toggleExpanded: function() {              
              this.toggleProperty('controllers.artist.isAlbumsExpanded');              
            }
    }
});
​
App.Artist = DS.Model.extend({
    name: DS.attr('string'),
    albums: DS.hasMany('album', {async: true})
});
​
App.Album = DS.Model.extend({
    name: DS.attr('string'),
    year: DS.attr('number'),
    songs: DS.hasMany('song', {async: true}),
    artist: DS.belongsTo('artist')
});
​
App.Song = DS.Model.extend({
    tracknumber: DS.attr('number'),
    name: DS.attr('string'),
    album: DS.belongsTo('album')
});
​
App.Artist.FIXTURES = [
  {
    id: 1,
    name: 'The Beatles',    
    albums: [1]
  }
];
​
App.Album.FIXTURES = [  
  {
    id:1,
    year: 1964,
    name: 'A Hard Days Night',
    songs: [1,2,3,4]
  }
  
];
​
App.Song.FIXTURES = [
  {  
    tracknumber: 1,
    id: 1,
    name: "A Hard Day's Night"
  },
  {
    tracknumber: 2,
    id: 2,
    name: "I Should Have Known Better"
  },
  {
    tracknumber: 2,
    id: 3,
    name: "If I Fell"
  },
  {
    tracknumber: 2,
    id: 4,
    name: "I'm Happy Just To Dance Wit"
   }       
];
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