public function createAction(Request $request) {
        $entity = new Post();
        $form = $this->createCreateForm($entity);
        $form->handleRequest($request);

        if ($form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            $this->processVideo($entity);
            $em->persist($entity);
            $em->flush();

            return $this->redirect($this->generateUrl('admin_post_show', array('id' => $entity->getId())));
        } else {
            $this->get('session')->getFlashBag()->add(
                    'warning', $this->get('translator')->trans('save_fail')
            );
        }

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