/**
* @param string $relationIdentifier
* @param int $id
* @param null|DatabaseQuery $inputQuery
*
* @return \LiftKit\Database\Entity\Entity|mixed|null
* @throws RelationException
* @throws QueryBuilderException
*/
public function getParent($relationIdentifier, $id, $inputQuery = null)
{
$relation = $this->getRelation($relationIdentifier);
if (!$relation) {
throw new RelationException('Invalid relation `' . $relationIdentifier);
}
if ($relation instanceof ManyToOne && $relation instanceof OneToOne) {
throw new RelationException('Invalid relation type `' . $relation['type'] . '`');
}
$row = $this->getRow($id);
$query = $this->database->createQuery()->whereEqual($relation->getKey(), $row[$relation->getRelatedKey()])->composeWith($inputQuery);
return $relation->getRelatedTableObject()->getRows($query)->fetchRow();
}
/**
* @return Query
*/
protected function createQuery()
{
return $this->database->createQuery();
}
