title: Adding a field specific error from the controller in symfony2
body: <p>I have some complex validation going on with my symfony form, and I need to be able to assign an error to a specific field from my controller. Right now, I have global errors working like this:</p>
  
  <pre><code>$error = new formerror("There is an error with the form");
  $form-&gt;addError($error);
  </code></pre>
  
  <p>But that creates a global error, not one bound to a specific field.</p>
  
  <p>Is there a way to throw an error on a specific field from my controller?</p>