function hook_field_storage_purge

Remove field storage information when field data is purged.

Called from field_purge_data() to allow the field storage module to delete field data information.

Parameters

$entity_type: The type of $entity; for example, 'node' or 'user'.

$entity: The pseudo-entity whose field data to delete.

$field: The (possibly deleted) field whose data is being purged.

$instance: The deleted field instance whose data is being purged.

Related topics

File

modules/field/field.api.php, line 2710

Code

function hook_field_storage_purge($entity_type, $entity, $field, $instance) {
    list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
    $table_name = _field_sql_storage_tablename($field);
    $revision_name = _field_sql_storage_revision_tablename($field);
    db_delete($table_name)->condition('entity_type', $entity_type)
        ->condition('entity_id', $id)
        ->execute();
    db_delete($revision_name)->condition('entity_type', $entity_type)
        ->condition('entity_id', $id)
        ->execute();
}