/**
  * Finds the LocationProvider model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return LocationProvider the loaded model
  * @throws HttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = LocationProvider::findOne($id)) !== null) {
         return $model;
     } else {
         throw new HttpException(404, 'The requested page does not exist.');
     }
 }
 public function createProvider()
 {
     $provider = new LocationProvider();
     if ($this->identity_kind == LocationProvider::IDENTITY_KIND_PEOPLE) {
         $provider_exist = LocationProvider::findOne(['identity_info' => $this->identity_info]);
         if ($provider_exist) {
             $provider = $provider_exist;
         } else {
             $provider->identity_info = $this->identity_info;
         }
         $location = Yii::$app->telecoms->locateWithNumber($this->identity_info);
         if ($location) {
             $provider->latitude = $location['latitude'];
             $provider->longitude = $location['longitude'];
         } else {
             throw new TelecomsLocateFailException('fail to locate the provider with number : ' . $this->identity_info);
         }
     } elseif ($this->identity_kind == LocationProvider::IDENTITY_KIND_POLICE) {
         $provider->identity_info = LocationProvider::IDENTITY_KIND_POLICE . time();
     } else {
         $provider->identity_info = LocationProvider::IDENTITY_KIND_MONITOR_SYSTEM . time();
     }
     $provider->identity_kind = $this->identity_kind;
     $provider->provided_at = $this->provided_at;
     $provider->save();
     $this->_provider = $provider;
 }