/** * Returns an array containing, for each field, the arary key used for that * field in self::$_fields. * * @return array */ static function &fieldKeys() { if (!self::$_fieldKeys) { self::$_fieldKeys = array('id' => 'id', 'is_active' => 'is_active', 'module' => 'module', 'entity_table' => 'entity_table', 'entity_id' => 'entity_id', 'weight' => 'weight', 'uf_group_id' => 'uf_group_id', 'module_data' => 'module_data'); } return self::$_fieldKeys; }