public function detailsAction(Request $request, $id)
    {
        $manager = $this->get('opifer.content.content_manager');
        $content = $manager->getRepository()->find($id);

        $form = $this->createForm(ContentType::class, $content);
        $form->handleRequest($request);

        if ($form->isValid()) {
            $manager->save($content);
        }

        return $this->render($this->getParameter('opifer_content.content_details_view'), [
            'content' => $content,
            'form' => $form->createView()
        ]);
    }