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   1 /**
   2  * Implements hook_field_storage_purge().
   3  */
   4 function {{ machine_name }}_field_storage_purge($entity_type, $entity, $field, $instance) {
   5   list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
   6
   7   $table_name = _field_sql_storage_tablename($field);
   8   $revision_name = _field_sql_storage_revision_tablename($field);
   9   db_delete($table_name)
  10     ->condition('entity_type', $entity_type)
  11     ->condition('entity_id', $id)
  12     ->execute();
  13   db_delete($revision_name)
  14     ->condition('entity_type', $entity_type)
  15     ->condition('entity_id', $id)
  16     ->execute();
  17 }