/**
* Removes unused ImageVariants after a Node property changes to a different ImageVariant.
* This is triggered via the nodePropertyChanged event.
*
* Note: This method it triggered by the "nodePropertyChanged" signal, @see \Neos\ContentRepository\Domain\Model\Node::emitNodePropertyChanged()
*
* @param NodeInterface $node the affected node
* @param string $propertyName name of the property that has been changed/added
* @param mixed $oldValue the property value before it was changed or NULL if the property is new
* @param mixed $value the new property value
* @return void
*/
public function removeUnusedImageVariant(NodeInterface $node, $propertyName, $oldValue, $value)
{
if ($oldValue === $value || !$oldValue instanceof ImageVariant) {
return;
}
$identifier = $this->persistenceManager->getIdentifierByObject($oldValue);
$results = $this->nodeDataRepository->findNodesByRelatedEntities(array(ImageVariant::class => [$identifier]));
// This case shouldn't happen as the query will usually find at least the node that triggered this call, still if there is no relation we can remove the ImageVariant.
if ($results === []) {
$this->assetRepository->remove($oldValue);
return;
}
// If the result contains exactly the node that got a new ImageVariant assigned then we are safe to remove the asset here.
if ($results === [$node->getNodeData()]) {
$this->assetRepository->remove($oldValue);
}
}
/**
* Delete an asset
*
* @param Asset $asset
* @return void
*/
public function deleteAction(Asset $asset)
{
try {
$this->assetRepository->remove($asset);
$this->addFlashMessage('assetHasBeenDeleted', '', Message::SEVERITY_OK, [htmlspecialchars($asset->getLabel())]);
} catch (AssetServiceException $exception) {
$this->addFlashMessage('assetCouldNotBeDeleted', '', Message::SEVERITY_WARNING, [], 1462196565);
}
$this->redirect('index');
}