public function info_students()
 {
     $session = new session_supervisor();
     $id = $session->Get_id_user();
     $db = new data_base(tpl_students::students(), array(tpl_students::id(), tpl_students::first_name(), tpl_students::last_name(), data_base::select_multiple_table(tpl_college::college(), tpl_college::college() . '.' . tpl_college::id(), tpl_students::students() . '.' . tpl_students::id_college(), tpl_college::name(), tpl_college::college() . '_' . tpl_college::name()), data_base::select_multiple_table(tpl_university::university(), tpl_university::university() . '.' . tpl_university::id(), tpl_students::students() . '.' . tpl_students::id_college(), tpl_university::name(), tpl_university::university() . '_' . tpl_university::name()), data_base::select_multiple_table(tpl_specialty::specialty(), tpl_specialty::specialty() . '.' . tpl_specialty::id(), tpl_students::students() . '.' . tpl_students::id_college(), tpl_specialty::name(), tpl_specialty::specialty() . '_' . tpl_specialty::name())), array(tpl_students::id_supervisor() => $id, tpl_students::status() => 1));
     return $db->get_where();
 }
 public function login_student()
 {
     if (isset($_POST['username_stu']) && isset($_POST[tpl_students::password() . '_stu'])) {
         $username = $_POST[tpl_students::username() . '_stu'];
         $password = $_POST[tpl_students::password() . '_stu'];
         if (!empty($username) && !empty($password)) {
             $db = new data_base(tpl_students::students(), array(tpl_students::id(), tpl_students::first_name()), array(tpl_students::username() => $username, tpl_students::password() => $this->hash_password($password), tpl_students::status() => 1));
             $data = $db->get_where();
             if (!empty($data)) {
                 $session = new session_students();
                 $session->new_login_students();
                 $session->set_id_user($data[0][tpl_students::id()]);
                 if ($session->get_login_students()) {
                     echo json_encode(array('valid' => true, 'title' => 'Welcome !!', 'massage' => $data[0][tpl_students::first_name()]));
                 } else {
                     echo json_encode(array('valid' => false, 'title' => 'Oops !!', 'massage' => 'Was not username & password, please try again'));
                 }
             } else {
                 echo json_encode(array('valid' => false, 'title' => 'Oops !!', 'massage' => 'Was not username & password, please try again'));
             }
         } else {
             echo json_encode(array('valid' => false, 'title' => 'Oops !!', 'massage' => 'Was not username & password, please try again'));
         }
     } else {
         echo json_encode(array('valid' => false, 'title' => 'Oops !!', 'massage' => 'Was not username & password, please try again'));
     }
 }
 public function find_supervisor()
 {
     if (isset($_POST[tpl_students::id() . '_' . tpl_students::students()])) {
         $id = $_POST[tpl_students::id() . '_' . tpl_students::students()];
         if (!empty($id)) {
             $db = new data_base(tpl_students::students(), array(tpl_students::id(), tpl_students::id_supervisor(), data_base::select_multiple_table(tpl_supervisor::supervisor(), tpl_supervisor::supervisor() . '.' . tpl_supervisor::id(), tpl_students::students() . '.' . tpl_students::id_supervisor(), tpl_supervisor::name(), tpl_supervisor::supervisor() . '_' . tpl_supervisor::name())), array(tpl_students::status() => 1, tpl_students::id() => $id));
             $data = $db->get_where();
             $w = '<option></option>';
             foreach ($data as $row) {
                 $w = $w . '<option value="' . $row[tpl_students::id_supervisor()] . '">' . $row[tpl_supervisor::supervisor() . '_' . tpl_supervisor::name()] . '</option>';
             }
             echo $w;
         } else {
             echo 'error empty';
             die;
         }
     } else {
         echo 'error isset';
         exit;
     }
 }
 public function update_status()
 {
     $id = $_POST[tpl_students::students() . '_' . tpl_students::id()];
     $status = $_POST[tpl_students::students() . '_' . tpl_students::status()];
     $db = new data_base(tpl_students::students(), array(tpl_students::status() => $status), array(tpl_students::id() => $id));
     $results = $db->change();
     $status_data = $status == 1 ? 'active' : 'dative';
     if ($results) {
         echo json_encode(array('valid' => 1, 'title' => 'Successfully !!', 'massage' => 'I\'ve been Update ' . $status_data));
     } else {
         echo json_encode(array('valid' => 0, 'title' => 'Oops !!', 'massage' => 'Was not Update ' . $status_data . ', please try again'));
     }
 }