How change return render direction in Symfony2 - forms

Question

I Have a problem rendering a form in symfony.
I use a comercial template (SmartAdmin) and this template use AJAX to capture all the urls loaded, keep the menus and configuration when the url provide '#'
Normally i can work ok, but in this controller i have a problem when the validation fails
public function createAction(Request $request)
{
$entity = new Clientes();
$form = $this->createCreateForm($entity);
$form->handleRequest($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($entity);
$em->flush();
$url=$this->generateUrl('ec_main_cliente', array('idcliente' => $entity->getId()));
$url = str_replace('cliente', '#cliente', $url);
return $this->redirect($url);
}
return $this->render('ECMainBundle:Clientes:nuevo_cliente.html.twig', array(
'entity' => $entity,
'form' => $form->createView(),
));
}
When Form is Invalid , load "ECMainBundle:Clientes:nuevo_cliente.html.twig" without the "#" and lost all the menus and configurations.
Any suggestion please?
Thanks in Advance and sorry for my english
Image work Ok:
Image of the problem:

Answer 1

I still don't have the feeling to fully understand what you're trying to achieve, but I think that you want the redirect always take place. In this case you should restructure your code a bit:
$id = 0;
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($entity);
$em->flush();
$id = $entity->getId();
}
$url = $this->generateUrl('ec_main_cliente', array('idcliente' => $id));
$url = str_replace('cliente', '#cliente', $url);
return $this->redirect($url);
Then, of course, the last part with the template rendering would be never exectuted.