/**
  * Trainee thuc hien 1 bai test
  * @param: $test_id : Test
  * @param: $course_id: Course  
  **/
 public function actionStarttest($test_id, $course_id, $lecture_id)
 {
     $this->layout = '//layouts/main_trainer';
     $cs = Yii::app()->getClientScript();
     $cs->registerCssFile(Yii::app()->theme->baseUrl . '/css/jquery-ui.css?ver=' . time());
     $cs->registerCssFile(Yii::app()->theme->baseUrl . '/css/dialog.css?ver=' . time());
     //$cs->registerCssFile(Yii::app()->theme->baseUrl.'/css/jquery.countdown.css?ver='.time());
     $cs->registerScriptFile(Yii::app()->theme->baseUrl . '/js/jquery.simplemodal-1.4.4.js', CClientScript::POS_END);
     $cs->registerScriptFile(Yii::app()->theme->baseUrl . '/js/jquery-ui.js');
     $cs->registerScriptFile(Yii::app()->theme->baseUrl . '/js/jquery.slimscroll.min.js');
     $model = new WUserTest();
     $model->test_id = $test_id;
     $model->course_id = $course_id;
     $model->lecture_id = $lecture_id;
     $model->user_id = Yii::app()->user->id;
     $model->status = 1;
     $model->added_date = date('Y-m-d H:i:s');
     //unset(Yii::app()->session['user_test']);
     //echo $a;exit();
     //var_dump($model->isNewRecord);exit();
     $oneut = WUserTest::model()->find('test_id=:test_id and course_id=:course_id and lecture_id=:lecture_id and user_id=:user_id', array(':test_id' => $test_id, ':course_id' => $course_id, ':lecture_id' => $lecture_id, ':user_id' => Yii::app()->user->id));
     ///var_dump($oneut);exit();
     if (is_null($oneut)) {
         //echo '1';exit();
         $model->save();
     } else {
         //echo '2';exit();
         //$model->updateByPk($oneut['id'], array('added_date' => date('Y-m-d H:i:s')));
     }
     $per_page = 1;
     $page_number = isset($_POST['page']) ? $_POST['page'] : 0;
     $position = $page_number * $per_page;
     $total = WQuestion::totalQuestion($test_id);
     //echo $total;exit();
     $pagination = WFunction::paging_question($total, $per_page);
     $test = WTest::model()->find('id=:id', array(':id' => $test_id));
     $this->render('/wTest/trainee/starttest', array('course_id' => $course_id, 'lecture_id' => $lecture_id, 'test' => $test, 'pagination' => $pagination, 'total' => $total));
 }