public function deletePractice()
 {
     if (isset($_GET['idPractice'])) {
         $infosUser = new UserDAO();
         $managerPractice = new PracticeDAO();
         $infos = $infosUser->getInfoUser($_SESSION['idUser']);
         $haveRight = false;
         if ($infos['type'] == 'Professeur') {
             $practices = $managerPractice->getPracticesByUser($infos['id']);
             if ($practices) {
                 foreach ($practices as $practice) {
                     if ($practice['user'] == $infos['id'] && $_GET['idPractice'] == $practice['id']) {
                         $haveRight = true;
                     }
                 }
             }
         }
         if ($infos['type'] == 'Admin' || $haveRight) {
             $uploader = PracticeController::Instance();
             $uploader->deleteFile($_GET['idPractice']);
             $_SESSION['success'] = 'Le cours a bien été supprimé';
             $_SESSION['display_msg_success'] = true;
             $this->profile();
         } else {
             $_SESSION['error'] = 'Vous n\'avez pas les droits requis pour accéder à cette page';
             $_SESSION['display_msg_error'] = true;
             $this->profile();
         }
     } else {
         $_SESSION['error'] = '[3] La page n\'existe pas';
         $_SESSION['display_msg_error'] = true;
         $this->profile();
     }
 }