hello when try保存a form with codeigniter 4 not save，这发生在当尝试添加验证到控制器时
你好，我有这个功能

public function create_user()
    {
        if ($this->request->getMethod() == 'post' && $this->validate([
            'nombre' => 'required',
            'apellido' => 'required',
        ])) {
            $nombre = $_POST['nombre_user'];
            $apellido = $_POST['apellido_user'];
            $data = [
                'nombre' => $nombre,
                'apellido' => $apellido,
            ];
            $user = $this->user = new userModels();
            if ($user->save($data)) {
                return redirect()->to(base_url() . '/gestion-user');
            }
        } else {
            echo view('header');
            echo view('user_form');
            echo view('footer');
        }
    }

但不保存当尝试保存表单时不保存，他们当退出此行时

if ($this->request->getMethod() == 'post' && $this->validate([

保存成功