/**
  * Ability to add sda in schedule
  */
 public function actionAddsda()
 {
     $sdaattendee = new SdaSchedules();
     if (Yii::$app->request->post()) {
         $value = \Yii::$app->request->post();
         $userid = User::findOne(['id' => $value['userid']]);
         if ($userid) {
             $sdaid = $value['sdaid'];
             $congress = $value['congress'];
             $sdaattendee->attendee_id = $userid->attendee_id;
             $sdaattendee->sda_id = $sdaid;
             $sdaattendee->congress_id = $congress;
             $checksdaattendee = SdaSchedules::findOne(['attendee_id' => $userid->attendee_id, 'sda_id' => $sdaid, 'congress_id' => $congress]);
             if ($checksdaattendee) {
                 echo "Attendee is already assigned for SDA  Congress";
             } else {
                 try {
                     $sdaattendee->save(false);
                     echo "SDA Added Successfully";
                 } catch (Exception $exc) {
                     echo $sdaattendee->getErrors();
                 }
             }
         } else {
             echo "User is not exist in Contect List";
         }
     }
 }