deletebasketitemaction.php

См. документацию.

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

final class DeleteBasketItemAction extends Sale\Controller\Action\BaseAction
{
    public function run(int $id)
    {
        $deleteBasketItemResult = $this->deleteBasketItem($id);
        if (!$deleteBasketItemResult->isSuccess())
        {
            $this->addErrors($deleteBasketItemResult->getErrors());
        }
    }
 
    public function deleteBasketItem(int $id): Sale\Result
    {
        $result = new Sale\Result();
 
        $registry = Sale\Registry::getInstance(Sale\Registry::REGISTRY_TYPE_ORDER);

        $basketClass = $registry->getBasketClassName();
 
        $basketIterator = $basketClass::getList([
            'select' => ['ORDER_ID', 'FUSER_ID', 'LID'],
            'filter' => [
                '=ID' => $id,
            ]
        ]);
        if ($basketItemData = $basketIterator->fetch())
        {
            if (empty($basketItemData['ORDER_ID']))
            {
                $basket = $basketClass::loadItemsForFUser($basketItemData['FUSER_ID'], $basketItemData['LID']);
                if ($basket && !$basket->isEmpty())
                {
                    $basket->getItemByBasketCode($id)->delete();
 
                    $saveResult = $basket->save();
                    if ($saveResult->isSuccess())
                    {
                        $result->setData(['basket' => $basket]);
                    }
                    else
                    {
                        foreach ($saveResult->getErrors() as $error)
                        {
                            // save basket error
                            $result->addError(
                                new Main\Error(
                                    $error->getMessage(),
                                    Sale\Controller\ErrorEnumeration::DELETE_BASKET_ITEM_ACTION_SAVE_BASKET
                                )
                            );
                        }
                    }
                }
                else
                {
                    $result->addError(
                        new Main\Error(
                            'basket load error',
                            Sale\Controller\ErrorEnumeration::DELETE_BASKET_ITEM_ACTION_BASKET_LOAD
                        )
                    );
                }
            }
            else
            {
                $result->addError(
                    new Main\Error(
                        'there is order with this basket item',
                        Sale\Controller\ErrorEnumeration::DELETE_BASKET_ITEM_ACTION_ORDER_EXIST
                    )
                );
            }
        }
        else
        {
            $result->addError(
                new Main\Error(
                    'basket item with id '.$id.' is not exists',
                    Sale\Controller\ErrorEnumeration::DELETE_BASKET_ITEM_ACTION_BASKET_ITEM_NOT_EXIST
                )
            );
        }
 
        return $result;
    }
}