gistfile1.txt

 public function saveServiceDescriptionSortingAction(Request $request)
    {
        if ($request->isMethod('POST')) {
            $items = $request->request->all()['item'];
            $manager = $this->getDoctrine()->getManager();
            $serviceDescriptionRepository = $manager->getRepository('SelfServiceBundle:PharmacyServiceDescription');

            for ($i = 0; $i < count($items); $i++) {
                /** @var \Dav\SelfServiceBundle\Entity\Normal\PharmacyServiceDescription $description */
                $description = $serviceDescriptionRepository->findOneBy([
                    'id' => $items[$i]
                ]);

                if ($description !== null) {
                    $description->setSorting($i);
                    $manager->persist($description);
                }
            }

            $manager->flush();
        }

        $this->addFlash(
            'notice',
            'Ihre Sortierung wurde erfolgreich gespeichert.'
        );

        return new JsonResponse();
    }