public function get_ParcoursUserList_csv($id)
 {
     if (!Helpers::isSecr()) {
         return redirect('/');
     }
     $parcours = Parcours::findOrFail($id);
     $users = $parcours->users;
     $output = fopen('php://memory', 'w');
     $filename = $parcours->intitule . "_" . $parcours->specialite->intitule . '.csv';
     // output the column headings
     fputcsv($output, array($parcours->intitule, $parcours->specialite->intitule), ';');
     fputcsv($output, array('Nom', 'Prénom', '@mail', 'actif'), ';');
     // loop over the rows, outputting them
     foreach ($users as $user) {
         fputcsv($output, array($user->nom, $user->prenom, $user->mail, $user->actif), ';');
     }
     // reset the file pointer to the start of the file
     fseek($output, 0);
     // tell the browser it's going to be a csv file
     header('Content-Type: application/csv');
     // tell the browser we want to save it instead of displaying it
     header('Content-Disposition: attachment; filename="' . $filename . '";');
     // make php send the generated csv lines to the browser
     fpassthru($output);
     return null;
 }
 public function post_DeleteConfirm($id)
 {
     if (!Helpers::isAdmin()) {
         return redirect('/');
     }
     $text = Parcours::findOrFail($id)->intitule . " à été supprimé";
     Parcours::destroy($id);
     return view("confirmation", ['text' => $text]);
 }