/**
  * Updates an existing Action model.
  * If update is successful, the browser will be redirected to the 'view' page.
  * @param integer $id
  * @return mixed
  */
 public function actionUpdate($id)
 {
     $model = $this->findModel($id);
     if ($model->load(Yii::$app->request->post()) && $model->validate()) {
         $model->data_structure = HelperData::dataTrim($model->data_structure);
         $model->data_structure = HelperData::dataImplodeReturn($model->data_structure);
         $model->save(false);
         //return $this->redirect(['view', 'id' => $model->id]);
         return $this->redirect(['index']);
     } else {
         $model->data_structure = HelperData::dataExplodeReturn($model->data_structure);
         // add device_ids to the model, that are joined to the action, it
         // set automaticly the default values of the device_ids
         $model->device_ids = $model->getDeviceActions();
         return $this->render('update', ['model' => $model]);
     }
 }
 public static function dataRemoveDoubleReturnsAndTrim($data)
 {
     // replace returns with ,
     $data = HelperData::dataImplodeReturn($data);
     // trim all the spaces between the , like ,   , , ,, to ,,
     $data = HelperData::dataTrim($data);
     // replace all the ,, for one ,
     do {
         $done = strpos($data, ',,');
         $data = str_replace(',,', ',', $data);
     } while ($done);
     return $data;
 }