Kdjykuj

I want to add custom attribute to http://{{magento2}}/rest/V1/carts/mine/totals API response.

I have done follwing way but it not working.

extension_attributes.xml



<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Api/etc/extension_attributes.xsd">

    <extension_attributes for="MagentoQuoteApiDataCartItemInterface">

        <attribute code="product_option" type="float" />

    </extension_attributes>

</config>



di.xml



<type name="MagentoQuoteModelQuoteItem">

    <plugin name="cs_product_opt" type="NamespaceProductPluginModelCartCartTotalRepositoryPlugin" />

</type>



Plugin file 



<?php

/**

* Copyright 2016 aheadWorks. All rights reserved.

* See LICENSE.txt for license details.

*/



namespace NamespaceProductPluginModelCart;



use MagentoQuoteApiDataTotalsExtensionInterface;

use MagentoQuoteApiDataTotalsExtensionFactory;

use MagentoQuoteApiDataCartItemExtensionFactory;

use MagentoQuoteApiDataTotalsInterface;

use MagentoQuoteApiCartRepositoryInterface;

use MagentoQuoteModelCartCartTotalRepository as TotalRepository;

use MagentoQuoteModelQuote;



/**

 * Class AheadworksStoreCreditPluginModelCartCartTotalRepositoryPlugin

 */

class CartTotalRepositoryPlugin

{

    /**

     * @var CartRepositoryInterface

     */

    private $quoteRepository;



    /**

     * @var CartItemExtensionFactory

     */

    private $totalsExtensionFactory;



    /**

     * @param CartRepositoryInterface $quoteRepository

     * @param CartItemExtensionFactory $totalsExtensionFactory

     */

    public function __construct(

        CartRepositoryInterface $quoteRepository,

        CartItemExtensionFactory $totalsExtensionFactory

    ) {

        $this->quoteRepository = $quoteRepository;

        $this->totalsExtensionFactory = $totalsExtensionFactory;

    }



    /**

     * Apply extension attributes to totals

     *

     * @param TotalRepository $subject

     * @param Closure $proceed

     * @param int $cartId

     * @return TotalsInterface

     * @SuppressWarnings(PHPMD.UnusedFormalParameter)

     */

    public function aroundGet(TotalRepository $subject, Closure $proceed, $cartId)

    {

         /** @var TotalsInterface $totals */

        $totals = $proceed($cartId);



        /** @var MagentoQuoteApiDataTotalsExtensionInterface $extensionAttributes */

        $extensionAttributes = $totals->getExtensionAttributes()

            ? $totals->getExtensionAttributes()

            : $this->totalsExtensionFactory->create();



        /** @var Quote $quote */

        $quote = $this->quoteRepository->getActive($cartId);



        $extensionAttributes->setProductOption(1.11);

        $totals->setExtensionAttributes($extensionAttributes);

        return $totals;

    }

}

anyone have idea how to add custom attribute to Quote Item Rest API.

To add new attribute on cart item. you need to consume V1/carts/mine service.

CartRepositoryPlugin.php

<?php

/**

* Copyright 2016 aheadWorks. All rights reserved.

* See LICENSE.txt for license details.

*/



namespace NamespaceProductPluginModelCart;



use MagentoQuoteApi;

use MagentoQuoteApiCartRepositoryInterface;

use MagentoQuoteApiCartTotalRepositoryInterface;

use MagentoCatalogHelperProductConfigurationPool;

use MagentoFrameworkApiDataObjectHelper;

use MagentoFrameworkApiExtensibleDataInterface;

use MagentoQuoteModelCartTotalsItemConverter;

use MagentoQuoteApiCouponManagementInterface;

use MagentoQuoteModelCartTotalsConverter;

use MagentoQuoteApiDataCartItemExtensionFactory;

use MagentoQuoteModelCartCartTotalRepository as TotalRepository;



/**

 * Class AheadworksStoreCreditPluginModelCartCartTotalRepositoryPlugin

 */

class CartRepositoryPlugin

{

/**

 * Cart totals factory.

 *

 * @var ApiDataTotalsInterfaceFactory

 */

private $totalsFactory;



/**

 * Quote repository.

 *

 * @var MagentoQuoteApiCartRepositoryInterface

 */

private $quoteRepository;



/**

 * @var MagentoFrameworkApiDataObjectHelper

 */

private $dataObjectHelper;



/**

 * @var ConfigurationPool

 */

private $itemConverter;



/**

 * @var CouponManagementInterface

 */

protected $couponService;



/**

 * @var TotalsConverter

 */

protected $totalsConverter;



/**

 * @param ApiDataTotalsInterfaceFactory $totalsFactory

 * @param CartRepositoryInterface $quoteRepository

 * @param DataObjectHelper $dataObjectHelper

 * @param CouponManagementInterface $couponService

 * @param TotalsConverter $totalsConverter

 * @param ItemConverter $converter

 */

public function __construct(

    ApiDataTotalsInterfaceFactory $totalsFactory,

    CartRepositoryInterface $quoteRepository,

    DataObjectHelper $dataObjectHelper,

    CouponManagementInterface $couponService,

    TotalsConverter $totalsConverter,

    CartItemExtensionFactory $cartItemInterfaceFactory,

    ItemConverter $converter

) {

    $this->totalsFactory = $totalsFactory;

    $this->quoteRepository = $quoteRepository;

    $this->dataObjectHelper = $dataObjectHelper;

    $this->couponService = $couponService;

    $this->totalsConverter = $totalsConverter;

    $this->cartItemInterfaceFactory = $cartItemInterfaceFactory;

    $this->itemConverter = $converter;

}



/**

 * Apply extension attributes to totals

 *

 * @param TotalRepository $subject

 * @param Closure $proceed

 * @param int $cartId

 * @return TotalsInterface

 * @SuppressWarnings(PHPMD.UnusedFormalParameter)

 */



public function aroundGet(TotalRepository $subject, Closure $proceed, $cartId)

{

    /** @var MagentoQuoteModelQuote $quote */

    $quote = $this->quoteRepository->getActive($cartId);

    if ($quote->isVirtual()) {

        $addressTotalsData = $quote->getBillingAddress()->getData();

        $addressTotals = $quote->getBillingAddress()->getTotals();

    } else {

        $addressTotalsData = $quote->getShippingAddress()->getData();

        $addressTotals = $quote->getShippingAddress()->getTotals();

    }

    unset($addressTotalsData[ExtensibleDataInterface::EXTENSION_ATTRIBUTES_KEY]);



    /** @var MagentoQuoteApiDataTotalsInterface $quoteTotals */

    $quoteTotals = $this->totalsFactory->create();

    $this->dataObjectHelper->populateWithArray(

        $quoteTotals,

        $addressTotalsData,

        MagentoQuoteApiDataTotalsInterface::class

    );

    $items = ;

    foreach ($quote->getAllVisibleItems() as $index => $item) {

        $cartItemExtensionAttributes = $item->getExtensionAttributes();

        if($cartItemExtensionAttributes == null){

            $cartItemExtensionAttributes = $this->cartItemInterfaceFactory->create();

            $cartItemExtensionAttributes->setProductOption('Product Option Check');

            $item->setExtensionAttributes($cartItemExtensionAttributes);       

            $item->save();

        }

        $items[$index] = $this->itemConverter->modelToDataObject($item);

    }



    $calculatedTotals = $this->totalsConverter->process($addressTotals);

    $quoteTotals->setTotalSegments($calculatedTotals);

    $amount = $quoteTotals->getGrandTotal() - $quoteTotals->getTaxAmount();

    $amount = $amount > 0 ? $amount : 0;

    $quoteTotals->setCouponCode($this->couponService->get($cartId));

    $quoteTotals->setGrandTotal($amount);

    $quoteTotals->setItems($items);

    $quoteTotals->setItemsQty($quote->getItemsQty());

    $quoteTotals->setBaseCurrencyCode($quote->getBaseCurrencyCode());

    $quoteTotals->setQuoteCurrencyCode($quote->getQuoteCurrencyCode());

    return $quoteTotals;

 }

}

extension_attributes.xml

    <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Api/etc/extension_attributes.xsd">

<extension_attributes for="MagentoQuoteApiDataCartItemInterface">

    <attribute code="product_option" type="string" />

</extension_attributes>

di.xml

 <type name="MagentoQuoteModelCartCartTotalRepository">

  <plugin name="cp_product_opt" type="CommercepunditProductPluginModelCartCartRepositoryPlugin" />

</type>

I hope it'll work for you. Let me know if you need further help.