/**
     * @Route("/user/edit/{id}", name="app_user_edit", requirements={"id" : "\d+"}, defaults={"id" : null})
     * @Method({"GET", "POST"})
     * @ParamConverter("user", class="AppBundle:User", options={"id" = "id"})
     */
    public function editAction(Request $request, User $user = null)
    {
        if (null === $user) {
            $user = new User();
        }

        $form = $this->createForm(new UserType(), $user, array(
                'disabled' => false,
            ));
        $form->handleRequest($request);

        if ($form->isValid()) {
            $encoder = $this->get('security.encoder_factory')->getEncoder($user);

            $user->setSalt(base64_encode(uniqid(mt_rand(10, 100))));
            $user->setPassword($encoder->encodePassword($user->getRawPassword(), $user->getSalt()));
            $user->eraseCredentials();

            $em = $this->getDoctrine()->getManager();
            $em->persist($user);
            $em->flush();

            return $this->redirect($this->generateUrl('app_user_edit', array(
                'id' => $user->getId(),
            )));
        }

        return $this->render('user/edit.html.twig', array(
            'form' => $form->createView(),
            'user' => $user,
        ));
    }
}