AppBundle\Controller\Admin\BlogController::deleteAction PHP Метод

    public function deleteAction(Request $request, Post $post)
    {
        $form = $this->createDeleteForm($post);
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->remove($post);
            $entityManager->flush();
            $this->addFlash('success', 'post.deleted_successfully');
        }
        return $this->redirectToRoute('admin_post_index');
    }