function editDetails($slug, Request $request, Application $app)
 {
     if (!$this->build($slug, $request, $app)) {
         $app->abort(404, "Group does not exist.");
     }
     if ($this->parameters['group']->getIsDeleted()) {
         die("No");
         // TODO
     }
     $form = $app['form.factory']->create(new GroupEditForm($app), $this->parameters['group']);
     if ('POST' == $request->getMethod()) {
         $form->bind($request);
         if ($form->isValid()) {
             $groupEditMetaDataModel = new GroupEditMetaDataModel();
             $groupEditMetaDataModel->setUserAccount($app['currentUser']);
             if ($form->has('edit_comment')) {
                 $groupEditMetaDataModel->setEditComment($form->get('edit_comment')->getData());
             }
             $groupRepository = new GroupRepository();
             $groupRepository->editWithMetaData($this->parameters['group'], $groupEditMetaDataModel);
             return $app->redirect("/group/" . $this->parameters['group']->getSlugForUrl());
         }
     }
     $this->parameters['form'] = $form->createView();
     return $app['twig']->render('site/group/edit.details.html.twig', $this->parameters);
 }