public function editProfile()
 {
     $nick = $_SESSION['username'];
     $m = new Model(Config::$mvc_bd_nombre, Config::$mvc_bd_usuario, Config::$mvc_bd_clave, Config::$mvc_bd_hostname);
     if ($_SERVER['REQUEST_METHOD'] == 'POST') {
         $result = $m->editProfile($_POST['nick'], $_POST['nombre'], $_POST['apellidos'], $_POST['email']);
     }
     if ($result == 'editChange') {
         header("Location: ./profile");
     } else {
         header("Location: ./error");
     }
 }