title: Symfony 2: Return a form in controller
body: <p>Is it possible to return a form via controller, like so:</p>
  
  <pre><code>    $form = $this-&gt;createForm(new TfQuestionType(),$TfQuestion);
      return new Response($form-&gt;createView());
  </code></pre>
  
  <p>I would like to retrieve it via Ajax and I know that you are supposed to return a HTML string of the form, but I can't do it in my case. </p>
  
  <p>Thanks,</p>
  
  <p>David.</p>