Nie mogę dojść gdzie popełniam błąd

, to mój pierwszy formularz w Symfony przykład z cookbook.
public function contactAction()
{
$enquiry = new Enquiry();
$form = $this->createForm(new EnquiryType(), $enquiry);
$request= $this ->getRequest();
if ($request == 'POST') {
$form ->bind($request);
$validator = $this->get('validator');
$errors = $validator->validate($enquiry);
if ($form ->isValid()) {
if (count($errors) > 0
) { return $this ->render('MultimediaBlogBundle:Default:contact.html.twig', array( 'errors' => $errors ));
}
}
return $this -> redirect($this->generateUrl('multimedia_contact'));
}
return $this ->render('MultimediaBlogBundle:Default:contact.html.twig', array( 'form' => $form->createView()));
}
<ul>
{% for error in errors %}
<li>{{ error.message }}</li>
{% endfor %}
</ul>