Neos\Media\Browser\Controller\Module\Management\AssetController::deleteAction PHP Метод

    public function deleteAction(\Neos\Media\Domain\Model\Asset $asset)
    {
        $relationMap = [];
        $relationMap[TypeHandling::getTypeForValue($asset)] = array($this->persistenceManager->getIdentifierByObject($asset));
        if ($asset instanceof \Neos\Media\Domain\Model\Image) {
            foreach ($asset->getVariants() as $variant) {
                $type = TypeHandling::getTypeForValue($variant);
                if (!isset($relationMap[$type])) {
                    $relationMap[$type] = [];
                }
                $relationMap[$type][] = $this->persistenceManager->getIdentifierByObject($variant);
            }
        }
        $relatedNodes = $this->nodeDataRepository->findNodesByRelatedEntities($relationMap);
        if (count($relatedNodes) > 0) {
            $this->addFlashMessage('Asset could not be deleted, because there are still Nodes using it.', '', Message::SEVERITY_WARNING, array(), 1412422767);
            $this->redirect('index');
        }
        // FIXME: Resources are not deleted, because we cannot be sure that the resource isn't used anywhere else.
        $this->assetRepository->remove($asset);
        $this->addFlashMessage(sprintf('Asset "%s" has been deleted.', $asset->getLabel()), null, null, array(), 1412375050);
        $this->redirect('index');
    }