public function guardar()
 {
     $obj = new notasproyecto();
     $_POST['semestre'] = $this->mostrar_semestre_ultimo();
     //        print_r($_POST); exit;
     $obj->insert($_POST);
 }
 public function save()
 {
     $obj = new notasproyecto();
     $p = $obj->insert($_POST);
     if ($p[0]) {
         die("<script>alert()</script>");
     } else {
         $data = array();
         $view = new View();
         $data['msg'] = $p[1];
         $data['url'] = 'index.php?controller=notasproyecto';
         $view->setData($data);
         $view->setTemplate('../view/_Error_App.php');
         $view->setLayout('../template/Layout.php');
         $view->render();
     }
 }