code: public function run($id)
      {
          /* @var $model ActiveRecord */
          $model = $this->findModel($id);
  
          if ($this->checkAccess) {
              call_user_func($this->checkAccess, $this->id, $model);
          }
  
          $model->scenario = $this->scenario;
          $model->load(Yii::$app->getRequest()->getBodyParams(), '');
          if ($model->save() === false && !$model->hasErrors()) {
              throw new ServerErrorHttpException('Failed to update the object for unknown reason.');
          }
  
          return $model;
      }
docs: Updates an existing model.
  @param string $id the primary key of the model.
  @return \yii\db\ActiveRecordInterface the model being updated
  @throws ServerErrorHttpException if there is any error when updating the model