public function getMainSearchParams() { return [self::MAIN_SEARCH_PARAM_CATEGORY => 'category_id', self::MAIN_SEARCH_PARAM_PRODUCER => 'producer_id', self::MAIN_SEARCH_PARAM_PRICE => 'price', self::MAIN_SEARCH_PARAM_WIDTH => 'width', self::MAIN_SEARCH_PARAM_HEIGHT => 'height', self::MAIN_SEARCH_PARAM_LENGTH => 'length']; }