title: Why isn't my Ember-Rails "Hello World" app working?
body: <p>I've been trying to evaluate emberjs for a rails project.  </p>
  
  <p>Can someone suggest (or ideally for my failing project) how get my data to display in the view? I've only run <code>rails g ember:bootstrap</code> and created a <code>User</code> table with a single attribute <code>username</code>. </p>
  
  <p>Link to repo: <a href="https://github.com/Rhodee/ember-hello-world" rel="nofollow">https://github.com/Rhodee/ember-hello-world</a></p>
  
  <p>The console provides only these clues:</p>
  
  <pre><code>Uncaught TypeError: Cannot call method 'extend' of undefined application_controller.js:1
  Uncaught TypeError: Cannot call method 'extend' of undefined user_controller.js:1
  Uncaught TypeError: Object &lt;Ember.Object:ember282&gt; has no method 'removeArrayObserver' ember.js:11068
  </code></pre>
  
  <p>I've already utilized these resources for study:</p>
  
  <ul>
  <li><a href="https://github.com/emberjs/data#readme" rel="nofollow">https://github.com/emberjs/data#readme</a></li>
  <li><a href="http://www.cerebris.com/blog/2012/01/26/beginning-ember-js-on-rails-part-2/" rel="nofollow">http://www.cerebris.com/blog/2012/01/26/beginning-ember-js-on-rails-part-2/</a></li>
  <li><a href="http://jsfiddle.net/C7LrM/59/" rel="nofollow">http://jsfiddle.net/C7LrM/59/</a></li>
  <li><a href="http://emberjs.com/documentation/" rel="nofollow">http://emberjs.com/documentation/</a> </li>
  </ul>
  
  <p>Where can I find up-to-date tutorials reflecting the state of how to get things wired up to simply display an index template?</p>