byconcreteproduct.php

См. документацию.

<?php
 
namespace Bitrix\Sale\Delivery\Restrictions;
 
use Bitrix\Main\Localization\Loc;
use Bitrix\Sale\Internals\Entity;
use Bitrix\Sale\Shipment;
use Bitrix\Sale\Services\Base\ConcreteProductRestriction;
use Bitrix\Sale\ShipmentItem;

class ByConcreteProduct extends ConcreteProductRestriction
{
    protected static function getJsHandler(): string
    {
        return "BX.Sale.Delivery";
    }

    public static function getClassDescription(): string
    {
        return Loc::getMessage('SALE_DLVR_RSTR_BY_CONCRETE_PRODUCT_DESC');
    }

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

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