How to display a list of subcategories in the infoblock?

Question

1C-Bitrix

There is an info block.
It has main sections in which there can be subsections.
Products can be both in the main section and in subsections.
Question.
How to make it so that if there are subsections in the main section, then they would be displayed (only a list of subsections)
if there are no subsections, then goods would be displayed
Thank you.

Answer 1

Make a check in sections.php. There is a bitrix:catalog.section.list component that displays a list of subcategories, see what it returns. And see what $arResult returns, maybe there is something related to the parent

Answer 2

For example:

<?$filter_7 = array('IBLOCK_ID'=>"13", 'ACTIVE'=>'Y');
         $db_list_id7 = CIBlockSection::GetList(array(), $filter_7, true, Array("UF_DATE"));
         while ($arSect = $db_list_id7->GetNext()){
         $arSect["photo"] = CFile::GetPath($arSect["PICTURE"]);
         ?>
         <a class="picsposition" href="/<?=$arSect["CODE"]?>">
            <div class="picsin" style="background-image: url(<?=$arSect["photo"]?>);background-size: 80%; background-position: center;background-repeat: no-repeat;">
            </div>
            <div class="textin"><p><?=$arSect["NAME"]?></p></div>
         </a>

         <? } ?>