Ojs\JournalBundle\Controller\BoardController::sortAction PHP 메소드

    public function sortAction(Request $request)
    {
        $em = $this->getDoctrine()->getManager();
        $journal = $this->get('ojs.journal_service')->getSelectedJournal();
        $boards = $em->getRepository(Board::class)->findAll();
        usort($boards, function ($a, $b) {
            return $a->getBoardOrder() > $b->getBoardOrder();
        });
        $sortData = [];
        foreach ($boards as $board) {
            $sortData[$board->getId()] = $board->getBoardOrder();
        }
        if ($request->getMethod() == 'POST' && $request->request->has('sortData')) {
            $sortData = json_decode($request->request->get('sortData'));
            foreach ($sortData as $boardId => $order) {
                foreach ($boards as $board) {
                    if ($board->getId() == $boardId) {
                        $board->setBoardOrder($order);
                        $em->persist($board);
                    }
                }
            }
            $em->flush();
            $this->successFlashBag('successful.update');
            return $this->redirectToRoute('ojs_journal_board_sort', ['journalId' => $journal->getId()]);
        }
        return $this->render('OjsJournalBundle:Board:sort.html.twig', ['boards' => $boards, 'jsonSortData' => json_encode($sortData)]);
    }