public FieldDefinitionListener::onFieldDefinitionDelete(FieldDefinitionInterface $field_definition)
Reacts to the deletion of a field.
Stored values should not be wiped at once, but marked as 'deleted' so that they can go through a proper purge process later on.
\Drupal\Core\Field\FieldDefinitionInterface $field_definition: The field definition being deleted.
Overrides FieldDefinitionListenerInterface::onFieldDefinitionDelete
public function onFieldDefinitionDelete(FieldDefinitionInterface $field_definition) { $entity_type_id = $field_definition->getTargetEntityTypeId(); $bundle = $field_definition->getTargetBundle(); $field_name = $field_definition->getName(); // Notify the storage about the field deletion. $this->entityTypeManager->getStorage($entity_type_id)->onFieldDefinitionDelete($field_definition); // Unset the bundle from the bundle field map key value collection. $bundle_field_map = $this->keyValueFactory->get('entity.definitions.bundle_field_map')->get($entity_type_id); unset($bundle_field_map[$field_name]['bundles'][$bundle]); if (empty($bundle_field_map[$field_name]['bundles'])) { // If there are no bundles left, remove the field from the map. unset($bundle_field_map[$field_name]); } $this->keyValueFactory->get('entity.definitions.bundle_field_map')->set($entity_type_id, $bundle_field_map); // Delete the cache entry. $this->cacheBackend->delete('entity_field_map'); // If the field map is initialized, update it as well, so that calls to it // do not have to rebuild it again. if ($field_map = $this->entityFieldManager->getFieldMap()) { unset($field_map[$entity_type_id][$field_name]['bundles'][$bundle]); if (empty($field_map[$entity_type_id][$field_name]['bundles'])) { unset($field_map[$entity_type_id][$field_name]); } $this->entityFieldManager->setFieldMap($field_map); } }
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Field!FieldDefinitionListener.php/function/FieldDefinitionListener::onFieldDefinitionDelete/8.1.x