public function update(Objet $obj)
{
$req = "UPDATE objets SET idcategorie = '" . $obj->getIdCategorie() . "', " . "nom = '" . $obj->getNom() . "', " . "prixini = '" . $obj->getPrixIni() . "', " . "datedebut = '" . $obj->getDateDebut() . "', " . "datefin = " . $obj->getDateFin() . ", " . "description = " . $obj->getDescription() . ", " . "photo = '" . $obj->getPhoto() . "' " . " WHERE idobj =" . $obj->getIdObj();
echo $req;
return $this->db->exec($req);
}