How to bulk change the coefficient. units measurements for goods by decimal value?

Question

1C-Bitrix

On a random page, I made the following code:

if (CModule::IncludeModule("catalog")) {
 $get_list = CCatalogProduct::GetList(array('SORT'=>'ASC'), array('MEASURE'=> 8, "%ELEMENT_NAME" => "Портьера"));											
 while($kg_result = $get_list->GetNext()) {
  $ed_list = CCatalogMeasureRatio::GetList(array(), array('PRODUCT_ID'=>$kg_result['ID']), false, false, array());     
   while($ed_result = $ed_list->GetNext()) {										
    CCatalogMeasureRatioAll::update($ed_result['ID'], array('PRODUCT_ID'=>$kg_result['ID'], 'RATIO' => 0.5));   
   }
  }     
}

But this only works if I set the Ratio to any value greater than or equal to 1.
And I need to set it to 0.5.
Moreover, after setting the product manually to 0.5, and then updating the code for all 1, and then back to 0.5 - it works only with the product that had 0.5 manually set earlier.
Some kind of poltergeist.
How to do?

Answer 1

First you get the id-nicknames of the products for which you need to change the coefficient (as I understand it, this is your first request), then

\Bitrix\Main\Loader::includeModule('catalog');

$productIds = [323, 316];
$ratio = '0.5';

$iterator = \Bitrix\Catalog\MeasureRatioTable::getList([
  'select' => ['ID'],
  'filter' => ['PRODUCT_ID' => $productIds]
]);

while($row = $iterator->fetch()) {
  \Bitrix\Catalog\MeasureRatioTable::update($row['ID'], ['RATIO' =>$ratio]);
}

instead of $productIds you substitute your id-nicknames