public function create($formulation, $name, $description)
 {
     $this->checkFormulation($formulation);
     $this->nom = $formulation;
     $this->id = $this->add();
     $profileDesc = new Profildesc();
     $profileDesc->profil = $this->id;
     $profileDesc->titre = $name;
     $profileDesc->description = $description;
     $profileDesc->lang = ActionsLang::instance()->get_id_langue_courante();
     $profileDesc->id = $profileDesc->add();
     redirige("droits.php?profil=" . $this->id);
 }