byproductcategory.php

См. документацию.

<?php
namespace Bitrix\Sale\Delivery\Restrictions;
 
use Bitrix\Main\Localization\Loc;
use Bitrix\Sale\Internals\Entity;
use Bitrix\Sale\Services\Base\ProductCategoryRestriction;
use Bitrix\Sale\Shipment;
 
Loc::loadMessages(__FILE__);

class ByProductCategory extends ProductCategoryRestriction
{
    public static $easeSort = 400;

    protected static function getJsHandler(): string
    {
        return 'BX.Sale.Delivery';
    }

    public static function getClassDescription() : string
    {
        return Loc::getMessage("SALE_DLVR_RSTR_BY_PC_DESCRIPT");
    }

    protected static function getBasketItems(Entity $entity): array
    {
        if (!$entity instanceof Shipment)
        {
            return [];
        }
 
        $basketItems = [];

        foreach ($entity->getShipmentItemCollection()->getSellableItems() as $shipmentItem)
        {
            $basketItems[] = $shipmentItem->getBasketItem();
        }
 
        return $basketItems;
    }
}