How to show all variants of product properties in a smart filter?

Question

1C-Bitrix

It is necessary that the filter contains all variants of product properties, even if there is no such product at the moment.

Answer 1

1. Disable the faceted index for the required infoblock
2. Make a custom component catalog.smart.filter
- find the line in the component.php file - add it before this line
foreach($arElements as $arElement)

if(isset($this->arResult['PROPERTY_ID_LIST']) && $this->arResult['PROPERTY_ID_LIST']) {
  $propertiesList = array();
  
  foreach($this->arResult['PROPERTY_ID_LIST'] as $propertyId) {
    $dbRes = CIBlockPropertyEnum::GetList(array('ID' => 'ASC'), array('PROPERTY_ID' => $propertyId));
    
    while($arRes = $dbRes->Fetch()) {
      $this->fillItemValues($arResult['ITEMS'][$arRes['PROPERTY_ID']], $arRes['ID']);
    }
  }
}

UPD
corrected the code a bit