Eccube\Controller\Admin\Product\CategoryController::index PHP Метод

    public function index(Application $app, Request $request, $parent_id = null, $id = null)
    {
        if ($parent_id) {
            $Parent = $app['eccube.repository.category']->find($parent_id);
            if (!$Parent) {
                throw new NotFoundHttpException('親カテゴリが存在しません');
            }
        } else {
            $Parent = null;
        }
        if ($id) {
            $TargetCategory = $app['eccube.repository.category']->find($id);
            if (!$TargetCategory) {
                throw new NotFoundHttpException('カテゴリが存在しません');
            }
            $Parent = $TargetCategory->getParent();
        } else {
            $TargetCategory = new \Eccube\Entity\Category();
            $TargetCategory->setParent($Parent);
            if ($Parent) {
                $TargetCategory->setLevel($Parent->getLevel() + 1);
            } else {
                $TargetCategory->setLevel(1);
            }
        }
        //
        $builder = $app['form.factory']->createBuilder('admin_category', $TargetCategory);
        $event = new EventArgs(array('builder' => $builder, 'Parent' => $Parent, 'TargetCategory' => $TargetCategory), $request);
        $app['eccube.event.dispatcher']->dispatch(EccubeEvents::ADMIN_PRODUCT_CATEGORY_INDEX_INITIALIZE, $event);
        $form = $builder->getForm();
        //
        if ($request->getMethod() === 'POST') {
            $form->handleRequest($request);
            if ($form->isValid()) {
                if ($app['config']['category_nest_level'] < $TargetCategory->getLevel()) {
                    throw new BadRequestHttpException('リクエストが不正です');
                }
                log_info('カテゴリ登録開始', array($id));
                $status = $app['eccube.repository.category']->save($TargetCategory);
                if ($status) {
                    log_info('カテゴリ登録完了', array($id));
                    $event = new EventArgs(array('form' => $form, 'Parent' => $Parent, 'TargetCategory' => $TargetCategory), $request);
                    $app['eccube.event.dispatcher']->dispatch(EccubeEvents::ADMIN_PRODUCT_CATEGORY_INDEX_COMPLETE, $event);
                    $app->addSuccess('admin.category.save.complete', 'admin');
                    if ($Parent) {
                        return $app->redirect($app->url('admin_product_category_show', array('parent_id' => $Parent->getId())));
                    } else {
                        return $app->redirect($app->url('admin_product_category'));
                    }
                } else {
                    log_info('カテゴリ登録エラー', array($id));
                    $app->addError('admin.category.save.error', 'admin');
                }
            }
        }
        $Categories = $app['eccube.repository.category']->getList($Parent);
        // ツリー表示のため、ルートからのカテゴリを取得
        $TopCategories = $app['eccube.repository.category']->getList(null);
        return $app->render('Product/category.twig', array('form' => $form->createView(), 'Parent' => $Parent, 'Categories' => $Categories, 'TopCategories' => $TopCategories, 'TargetCategory' => $TargetCategory));
    }