public function Recherche()
 {
     $this->allowTo(['admin', 'staff']);
     $usersManager = new \Manager\UserManager();
     if (isset($_REQUEST['name'])) {
         $recherche = $usersManager->findUsers($_REQUEST['name']);
         $this->show('user/recherche', ['recherche' => $recherche]);
     }
     $this->show('user/recherche');
 }