title: Difference between render(url('url_name')) and render(controller('controller_name')?
body: <p>Is there a difference between thoses 2 lignes?</p>
  
  <pre><code>render(url('hwi_oauth_connect'));
  render(controller("HWIOAuthBundle:Connect:connect"));
  </code></pre>
  
  <p>with route being (xml):</p>
  
  <pre><code>hwi_oauth_connect:    
  path: /login/    
  defaults: {_controller: HWIOAuthBundle:Connect:connect }
  </code></pre>