title: Force ember-data to re-load specific record from server
body: <p>Lets say I have 2 nested resources for posts. It is defined like this in my router.</p>
  
  <pre><code>this.resource('posts', function () {
      this.resource('post', {path: '/:post_id'});
  });
  </code></pre>
  
  <p>Each post can then also have multiple related comments.</p>
  
  <p>In my *posts_route.js* i set up the model like this: </p>
  
  <pre><code>return this.get('store').findAll('post');
  </code></pre>
  
  <p>This makes a GET request to my backend api which returns all posts as json. At this point I only need basic information (and no comments), so not all the data is included in the returned json. Later, if I click on a specific post I do this in my *post_route.js*: </p>
  
  <pre><code>return this.get('store').find('post', params.post_id);
  </code></pre>
  
  <p>With this I wish to do a new GET request for only that specific post. But ember-data does not do a new server request. I looks for it in the local store where it finds it, but not with the extended data I was hoping to get.</p>
  
  <p>Is there a way to force ember-data to do a real request to the server? Thanks.</p>