protected function _setCampaignDetailLink($oArticle)
    {
        // #827
        if ($sCampaign = \OxidEsales\Eshop\Core\Registry::getConfig()->getRequestParameter("sExportCampaign")) {
            // modify detaillink
            //#1166R - pangora - campaign
            $oArticle->appendLink("campaign={$sCampaign}");

            if (\OxidEsales\Eshop\Core\Registry::getConfig()->getRequestParameter("blAppendCatToCampaign") &&
                ($sCat = $this->getCategoryString($oArticle))
            ) {
                $oArticle->appendLink("/$sCat");
            }
        }

        return $oArticle;
    }