Smart filter. Build smart url

result_modifier.php

// SMART FILTER LINK //
$arSectionInfo = CIBlockSection::GetByID($arSmartFilter['SECTION_ID'])->GetNext();
$sefSmartUrl = $arSectionInfo['SECTION_PAGE_URL']  . "filter/#SMART_FILTER_PATH#/";

foreach($arResult["ITEMS"] as $PID => $arItem)
{
    $code = null;

    if ($arItem["CODE"]){
        $code = toLower($arItem["CODE"]);
    }else{
        $code = $arItem["ID"];
    }

    if($arItem["PROPERTY_TYPE"] != "N" && $arItem["DISPLAY_TYPE"] != "U")
        foreach($arItem["VALUES"] as $key => $ar)
        {
                $arResult["ITEMS"][$PID]['VALUES'][$key]['SMART_URL'] = str_replace("#SMART_FILTER_PATH#", implode("/", $this->__component->encodeSmartParts(array(array($code,$ar["URL_ID"])))), $sefSmartUrl);

        }
}

Создание чпу ссылок для параметров фильтра