title: How to pass a bound model to an inputs action method
body: <p>I have an input inside my handlebars template</p>
  
  <pre><code>{{#each thing in controller}}
    {{input action="update_model" class="blue"}}
  {{/each}}
  </code></pre>
  
  <p>This will intercept the "enter key" correctly, but I need to pass my "thing" model to the update action, how can I do this w/ the latest build of ember.js ?</p>
  
  <pre><code>actions: {
    update_model: function(model) {
      //do something w/ the model even when the user hits enter
    }
  }
  </code></pre>