public function activate($activation_code)
 {
     $applicantModel = new applicantModel();
     $applicant = $applicantModel->activate($activation_code);
     $view = new viewModel('result');
     if (isset($_SESSION['lang'])) {
         $lang = $_SESSION['lang'];
     } else {
         $lang = 'en';
     }
     if ($lang == 'ar') {
         $message = 'تم تفعيل حسابك بنجاح ';
         $link = "<a href='" . site_url . "/applicant/login'>دخول</a>";
     } else {
         $message = 'Your account activated successfully';
         $link = "<a href='" . site_url . "/applicant/login'>login</a>";
     }
     $view->assign('message', $message);
     $view->assign('link', $link);
 }