title: form handling: "bind" is deprecated in symfony 2.3 - "submit" doesn't work either
body: <p>In symfony 2.3 binding a <code>Request</code> to a form with <code>bind()</code> is <strong>deprecated</strong>:</p>
  
  <pre><code>$form-&gt;bind($this-&gt;getRequest());
  </code></pre>
  
  <p>Now I tried using the <code>submit()</code> method instead (as described in the <a href="http://symfony.com/doc/current/cookbook/form/direct_submit.html" rel="noreferrer">documentation</a>):</p>
  
  <pre><code>$form-&gt;submit($request-&gt;request-&gt;get($form-&gt;getName()));
  </code></pre>
  
  <p>...but it doesn't work.</p>
  
  <p>The form did not change the object that I added to it upon creation.</p>