function prefs(Request $request, Application $app)
 {
     $form = $app['form.factory']->create(new UserPrefsForm(), $app['currentUser']);
     if ('POST' == $request->getMethod()) {
         $form->bind($request);
         if ($form->isValid()) {
             $userRepo = new UserAccountRepository();
             $userRepo->editPreferences($app['currentUser']);
             $app['flashmessages']->addMessage("Options Changed.");
             return $app->redirect("/me/");
         }
     }
     return $app['twig']->render('index/currentuser/prefs.html.twig', array('form' => $form->createView()));
 }