/**
* {@inheritdoc}
*/
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);
}
}
