/** * Get the key for a sort index on a relationship * * @param Relationship $relationship Relationship * @param string $sort_field Property name on the inverse entity * @param string $id Local ID * @return string */ public function getSortIndexKey(Relationship $relationship, $sort_field, $id) { // srt:category-article:89726:title return static::SORT_NAMESPACE . $this->delimiter . $relationship->getSourceTable() . '-' . $relationship->getTargetTable() . $this->delimiter . $id . $this->delimiter . $relationship->getName() . $this->delimiter . $sort_field; }