title: How to get children for current object in ember route
body: <p>The templates section in the Ember guides describes how to use the linkTo helper. However, I can't seem to find the answer to my following question:</p>
  
  <p>I have a page displaying some properties of a Post object. The page contain a link 'Comments' that need to display the comments that belong to the current post.</p>
  
  <pre><code>// Router
  App.Router.map(function(match) {
    match('/posts').to('posts', function(match) {
      match('/:post_id').to('post', function(match) {
        match('/').to('postIndex');
        match('/comments').to('comments');
      });
    });
  });
  
  // post template
  ...
  {{#linkTo "comments"}}Comments{{/linkTo}}
  ...
  {{outlet}}
  </code></pre>
  
  <p>How do I need to define my CommentsRoute to populate the content of the controller with the comments of the current post?</p>
  
  <pre><code>App.CommentsRoute = Ember.Route.extend({
    model: function() {
      // I need to get the content of the postController here
      // this.controllerFor('post') seemed obvious, but doesn't work
      post = ????;
      post.get('comments')
    }
  })
  </code></pre>
  
  <p>Thanks in advance.</p>