title: ember - didLoad event in view for waiting for a ember-data model to load
body: <p>hi i have the following route:</p>
  
  <pre><code>MB3.PlaylistRoute = Ember.Route.extend({
    model: function(params) {
      return MB3.Playlist.find(params.playlist_id);
    }
  });
  </code></pre>
  
  <p>The playlist has a hasMany realtion with tracks. in the playlist view i want do do some logic with an attribute of the first track of the playlist.</p>
  
  <p>so i added this code:</p>
  
  <pre><code>MB3.PlaylistView = Ember.View.extend({
    didInsertElement: function() {
      console.log(this.get("controller.tracks").objectAt(0).get("title"));
    }
  });
  </code></pre>
  
  <p>The problem is title is undefined (i think because it is not yet loaded. the second thing i tried is waiting for the didLoad event:</p>
  
  <pre><code>MB3.PlaylistView = Ember.View.extend({
        didInsertElement: function() {
          var self=this;
          this.get("controller.tracks").on("didLoad", function() {
            console.log(self.get("controller.tracks").objectAt(0).get("title"));
          });
        }
      });
  </code></pre>
  
  <p>but this logges null as well. How do i accomplish that?</p>