public function add(Modele $mod)
 {
     if ($mod->getAddable()) {
         $q = $this->_db->prepare("INSERT INTO modele SET nomModele=:modele, idMarque=:idM, qteStock=:stock, prix=:prixL, tauxRemise=:taux");
         $q->execute(array(":modele" => $mod->getNomModele(), ":idM" => $mod->getIdMarque(), ":stock" => $mod->getQteStock(), ":prixL" => $mod->getPrix(), ":taux" => $mod->getTauxRemise()));
         echo "add";
     } else {
         echo "conditions non validées voir trigger_error";
     }
 }