How to add a custom field to the cart?

Question

1C-Bitrix

You need to add a text field to the cart. Not a product property, but a separate field in the cart - so that it is filled in on the cart page, but then saved as an order property. What is the best way to do this?

Answer 1

So do it:
1. Add a field:
<input type="text" value="Моё отдельное поле">
Pass the value of this field through cookies or through the form using the post method in the code below
2. Update the order properties:

$order = \Bitrix\Sale\Order::load(123); //загрузим номер созданного заказа
$collection = $order->getPropertyCollection();
$propertyValue = $collection->getItemById(10);//id свойства
$r = $propertyValue->setField('VALUE', 'Моё отдельное поле');
if (!$r->isSuccess())
{
    var_dump($r->getErrorMessages());
}
$order->save();

This and other information: https://dev.1c-bitrix.ru/api_d7/bitrix/sale/techni...