public function data_index_buku2()
 {
     if (isset($_POST['sp2d'])) {
         //tinggal nambahin filter di get_elem_jadup
         $sp2d = $_POST['sp2d'];
         $elem = new ElemenBeasiswa();
         $user = Session::get('kd_user');
         $buku = $elem->get_elem_buku_by_sp2d($sp2d, $user);
         //var_dump($buku);
         $this->view->buku = $buku;
         $this->view->load('bantuan/tabel_index_buku');
     }
 }