ProductController::actionIndex PHP Method

    public function actionIndex()
    {
        $typesSearchParam = $this->attributeFilter->getTypeAttributesForSearchFromQuery(Yii::app()->getRequest());
        $mainSearchParam = $this->attributeFilter->getMainAttributesForSearchFromQuery(Yii::app()->getRequest(), [AttributeFilter::MAIN_SEARCH_PARAM_NAME => Yii::app()->getRequest()->getQuery(AttributeFilter::MAIN_SEARCH_QUERY_NAME)]);
        if (!empty($mainSearchParam) || !empty($typesSearchParam)) {
            $data = $this->productRepository->getByFilter($mainSearchParam, $typesSearchParam);
        } else {
            $data = $this->productRepository->getListForIndexPage();
        }
        $this->render('index', ['dataProvider' => $data]);
    }