/** * Renvoie la liste des creneaux de la journee * * @return PropelObjectCollection EdtCreneau */ public static function retrieveAllEdtCalendrierPeriodesOrderByTime(){ if (self::$_all_periodes == null) { self::$_all_periodes = EdtCalendrierPeriodeQuery::create()->addAscendingOrderByColumn(EdtCalendrierPeriodePeer::JOURDEBUT_CALENDRIER)->find(); } return clone self::$_all_periodes; }