public function createQuery()
{
$query = DiaporamaImageQuery::create();
!is_null($this->diaporama_id) and $query->filterByDiaporamaId($this->diaporama_id);
return $query;
}
/**
* Retrieving diaporama's images
* @return array Diaporama's images.
*/
public function getImages()
{
return DiaporamaImageQuery::create()->findByDiaporamaId($this->getId());
}