/**
  * @param ExportRequest $request
  * @return bool
  */
 protected function processExportRequest($request)
 {
     $controllerClassName = $request->data['controllerClassName'];
     $actionId = $request->data['actionId'];
     $requestParams = $request->data['params'];
     /** @var \backend\base\Controller $originalController */
     $originalController = new $controllerClassName('temp-controller', $this->module);
     /** @var ExportAction $action */
     $action = $originalController->createAction($actionId);
     if (!is_a($action, ExportAction::className())) {
         return false;
     }
     if (is_callable($action->searchModel)) {
         $searchModel = call_user_func($action->searchModel, $requestParams);
     } else {
         $searchModel = $action->searchModel;
     }
     /** @var DataProviderInterface $dataProvider */
     $dataProvider = call_user_func($action->dataProvider, $requestParams, $searchModel);
     /** @var array $gridColumns */
     $gridColumns = call_user_func($action->getGridColumns(), $searchModel, $dataProvider, $requestParams);
     try {
         $exportedContent = GridView::widget(['renderAllPages' => true, 'runInConsoleMode' => true, 'layout' => "{items}", 'tableOptions' => ['class' => ''], 'dataProvider' => $dataProvider, 'columns' => $gridColumns]);
     } catch (Exception $e) {
         $request->delete();
         SystemEvent::create('error', $request->user_id, Yii::t('admin/export', 'Requested data was not exported, aborting'));
         return false;
     }
     $fileContent = strtr(ExportAction::EXPORT_TEMPLATE, ['{name}' => $action->reportName, '{grid}' => $exportedContent]);
     $fileName = 'Export_' . $request->id . '_' . strtotime('%d%m%Y%H%i%s') . '.xls';
     $request->file = $fileName;
     $request->is_exported = 1;
     $request->save();
     FileHelper::createDirectory(Yii::getAlias(ExportRequest::FILE_PATH));
     file_put_contents(Yii::getAlias($request->fullFileName), $fileContent);
     SystemEvent::create('success', $request->user_id, Yii::t('admin/export', 'Data requested for exporting is ready'), ['/admin-export/export-requests/index']);
     return true;
 }