Ojs\JournalBundle\Controller\ArticleController::updateAction PHP Method

    public function updateAction(Request $request, Article $article)
    {
        $journal = $this->get('ojs.journal_service')->getSelectedJournal();
        $em = $this->getDoctrine()->getManager();
        if (!$this->isGranted('EDIT', $journal, 'articles')) {
            throw new AccessDeniedException("You not authorized for this page!");
        }
        $dispatcher = $this->get('event_dispatcher');
        $editForm = $this->createEditForm($article, $journal)->add('update', 'submit', array('label' => 'u'));
        $editForm->handleRequest($request);
        if ($editForm->isValid()) {
            $event = new JournalItemEvent($article);
            $dispatcher->dispatch(ArticleEvents::PRE_UPDATE, $event);
            $em->persist($event->getItem());
            $em->flush();
            $this->successFlashBag('successful.update');
            $event = new JournalItemEvent($event->getItem());
            $dispatcher->dispatch(ArticleEvents::POST_UPDATE, $event);
            if ($event->getResponse()) {
                return $event->getResponse();
            }
            return $this->redirect($this->generateUrl('ojs_journal_article_edit', array('id' => $event->getItem()->getId(), 'journalId' => $journal->getId())));
        }
        return $this->render('OjsJournalBundle:Article:edit.html.twig', ['entity' => $article, 'form' => $editForm->createView()]);
    }