getbasketaction.php

См. документацию.

<?php
 
namespace Bitrix\Sale\Controller\Action\Entity;
 
use Bitrix\Main;
use Bitrix\Sale;

final class GetBasketAction extends Sale\Controller\Action\BaseAction
{
    private function checkParams(array $fields): Sale\Result
    {
        $result = new Sale\Result();
 
        if (empty($fields['SITE_ID']))
        {
            $this->addError(
                new Main\Error(
                    'siteId not found',
                    Sale\Controller\ErrorEnumeration::GET_BASKET_ACTION_SITE_ID_NOT_FOUND
                )
            );
        }
 
        if (empty($fields['FUSER_ID']) || (int)$fields['FUSER_ID'] <= 0)
        {
            $this->addError(
                new Main\Error(
                    'fuserId not found',
                    Sale\Controller\ErrorEnumeration::GET_BASKET_ACTION_FUSER_ID_NOT_FOUND
                )
            );
        }
 
        return $result;
    }
 
    public function run(array $fields)
    {
        $checkParamsResult = $this->checkParams($fields);
        if (!$checkParamsResult->isSuccess())
        {
            $this->addErrors($checkParamsResult->getErrors());
            return null;
        }
 
        $fuserId = $fields['FUSER_ID'];
        $basket = $this->getBasketByFuserId($fuserId, $fields['SITE_ID']);
 
        $registry = Sale\Registry::getInstance(Sale\Registry::REGISTRY_TYPE_ORDER);
        $orderClassName = $registry->getOrderClassName();
        $order = $orderClassName::create($fields['SITE_ID']);
        $order->setBasket($basket);
 
        return [
            'BASKET_ITEMS' => Sale\Helpers\Controller\Action\Entity\Order::getOrderProductsByBasket($basket),
            'ORDER_PRICE_TOTAL' => Sale\Helpers\Controller\Action\Entity\Order::getTotal($order),
        ];
    }
 
    private function getBasketByFuserId($fuserId, $siteId): Sale\BasketBase
    {
        $registry = Sale\Registry::getInstance(Sale\Registry::REGISTRY_TYPE_ORDER);

        $basketClassName = $registry->getBasketClassName();
        return $basketClassName::loadItemsForFUser($fuserId, $siteId)->getOrderableItems();
    }
}