public function updateAction(Request $request, $id)
    {
        $em = $this->getDoctrine()->getManager();

        $entity = $em->getRepository('VeonikBlogBundle:Tag')->find($id);

        if (!$entity) {
            throw $this->createNotFoundException('Unable to find Tag entity.');
        }

        $form = $this->createForm(new TagType(), $entity);
        $form->bind($request);

        if ($form->isValid()) {
            $em->persist($entity);
            $em->flush();

            $this->getSession()->getFlashBag()->set('success', 'The tag has been updated successfully.');

            return $this->redirect($this->generateUrl('manage_tags'));
        }

        return array(
            'entity'      => $entity,
            'form'   => $form->createView(),
        );
    }