Ojs\AdminBundle\Controller\AdminPageController::createAction PHP Method

    public function createAction(Request $request)
    {
        $entity = new AdminPage();
        $entity->setCurrentLocale($request->getDefaultLocale());
        $form = $this->createCreateForm($entity);
        $form->handleRequest($request);
        if ($form->isValid()) {
            $entity->setSlug($entity->getTranslationByLocale($request->getDefaultLocale())->getTitle());
            $em = $this->getDoctrine()->getManager();
            $em->persist($entity);
            $em->flush();
            $this->successFlashBag('successful.create');
            return $this->redirectToRoute('ojs_admin_page_show', ['id' => $entity->getId()]);
        }
        return $this->render('OjsAdminBundle:AdminPage:new.html.twig', ['entity' => $entity, 'form' => $form->createView()]);
    }