How to catch discount creation/editing event in admin. Bitrix panels?

Question

1C-Bitrix

Hello
Is it possible to track when someone in the admin panel creates or edits a discount (Marketing - Product Marketing - Product Discounts) ?
Maybe something like this can be done AddEventHandler("sale", "OnOrderSave", "saveOrderData"); ?

Answer 1

The Bitrix\Sale\Internals\DiscountTable ORM class describes the rules for working with a shopping cart (they are also discounts) . and creating events.

$eventManager = Main\EventManager::getInstance();
$eventManager->addEventHandler(
    "module_name",
    "\SomePartner\MyBooksCatalog\Book::OnBeforeUpdate",
    <ваш callback>
);