How to check in catalog.section if at least one of the offers is available for purchase?

Question

1C-Bitrix

Good afternoon.
In the catalog.element template, checking for the availability of an item for purchase is defined as

if (isset($arResult['OFFERS']) && !empty($arResult['OFFERS'])) {
  $canBuy = $arResult['OFFERS'][$arResult['OFFERS_SELECTED']]['CAN_BUY'];
}
else {
  $canBuy = $arResult['CAN_BUY'];
}
echo $canBuy; // 1 или ничего

in the section template found the only check on canbuy

$canBuy = $arItem['JS_OFFERS'][$arItem['OFFERS_SELECTED']]['CAN_BUY'];

I don't quite understand why, but I don't think it works at all.
please tell me how to check if at least one of the sales offers in catalog.section is available for purchase?

Answer 1

<?
$canBuy = false;
foreach($arItem['OFFERS'] as $arOffer){
  if(isset($arOffer['MIN_PRICE']) && is_array($arOffer['MIN_PRICE']) && $arOffer['MIN_PRICE']['DISCOUNT_VALUE'] > 0){
    $canBuy = true;
  }
}
if($canBuy){
  ?>доступно<?
} 
?>