public function loginAction(Request $request)
{
      $user = new Users();

    $form = $this->createForm('AppBundleFormUsersType', $user);

    $form->handleRequest($request);
    if ($form->isSubmitted() && $form->isValid()) {
        $password = $this->get('security.password_encoder')
            ->encodePassword($user, $user->getPassword());
        $user->setPassword($password);

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

        return $this->redirectToRoute('users_show');
    }

    return $this->render('security/new.html.twig', array(

                'form' => $form->createView(),
    ));

}