/**
* @param \Symfony\Component\Form\Event\FilterDataEvent $event
*/
public function onBind(FilterDataEvent $event)
{
$collection = $event->getForm()->getData();
$data = $event->getData();
// looks like there is no way to remove other listeners
$event->stopPropagation();
if (!$collection) {
$collection = $data;
} else {
if (count($data) === 0) {
$this->modelManager->collectionClear($collection);
} else {
// merge $data into $collection
foreach ($collection as $entity) {
if (!$this->modelManager->collectionHasElement($data, $entity)) {
$this->modelManager->collectionRemoveElement($collection, $entity);
} else {
$this->modelManager->collectionRemoveElement($data, $entity);
}
}
foreach ($data as $entity) {
$this->modelManager->collectionAddElement($collection, $entity);
}
}
}
$event->setData($collection);
}