Deletes field data for an existing entity. This deletes all revisions of field data for the entity.
\Drupal\Core\Entity\EntityInterface $entity: The entity whose field data to delete.
function field_attach_delete(EntityInterface $entity) {
// Ensure we are working with a BC mode entity.
$entity = $entity
->getBCEntity();
_field_invoke('delete', $entity);
// Collect the storage backends used by the fields in the entities.
$storages = array();
foreach (field_info_instances($entity
->entityType(), $entity
->bundle()) as $instance) {
$field = field_info_field_by_id($instance['field_id']);
$field_id = $field['uuid'];
$storages[$field['storage']['type']][$field_id] = $field_id;
}
// Field storage backends delete their data.
foreach ($storages as $storage => $fields) {
$storage_info = field_info_storage_types($storage);
module_invoke($storage_info['module'], 'field_storage_delete', $entity, $fields);
}
// Let other modules act on deleting the entity.
module_invoke_all('field_attach_delete', $entity);
$entity_info = $entity
->entityInfo();
if ($entity_info['field_cache']) {
cache('field')
->delete('field:' . $entity
->entityType() . ':' . $entity
->id());
}
}