Ttdfjt

I have to add custom attribute to /rest/default/V1/carts/mine/totals-information, so I found TotalsInformationInterface and I tried to add on this, but it is not working.

I am doing this because I have to override the shipping price to a custom one.

Here is what I got so far:

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="MagentoCheckoutApiDataTotalsInformationInterface">
 <attribute code="selected_shipping" type="string"/>
</extension_attributes>

/etc/sales.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Sales:etc/sales.xsd">
<section name="quote">
 <group name="totals">
 <item name="shipping_amount" instance="MyModuleModelQuoteAddressTotalCustomShippingPrice" sort_order="510"/>
 </group>
</section>

/view/frontend/web/js/model/cart/totals-processor/default.js

define([
'jquery',
'underscore',
'Magento_Checkout/js/model/resource-url-manager',
'Magento_Checkout/js/model/quote',
'mage/storage',
'Magento_Checkout/js/model/totals',
'Magento_Checkout/js/model/error-processor',
'Magento_Checkout/js/model/cart/cache',
'Magento_Customer/js/customer-data'
], function ($, _, resourceUrlManager, quote, storage, totalsService, errorProcessor, cartCache, customerData) 
'use strict';

/**
 * Load data from server.
 *
 * @param Object address
 */
var loadFromServer = function (address) 
 var serviceUrl,
 payload;

 // Start loader for totals block
 totalsService.isLoading(true);
 serviceUrl = resourceUrlManager.getUrlForTotalsEstimationForNewAddress(quote);
 payload = 
 addressInformation: 
 address: _.pick(address, cartCache.requiredFields),
 extension_attributes: 
 selected_shipping: $('[name="selected_shipping"]').val()
 
 
 ;

 if (quote.shippingMethod() && quote.shippingMethod()['method_code']) 
 payload.addressInformation['shipping_method_code'] = quote.shippingMethod()['method_code'];
 payload.addressInformation['shipping_carrier_code'] = quote.shippingMethod()['carrier_code'];
 

 storage.post(
 serviceUrl, JSON.stringify(payload), false
 ).done(function (result) 
 var data = 
 totals: result,
 address: address,
 cartVersion: customerData.get('cart')()['data_id'],
 shippingMethodCode: null,
 shippingCarrierCode: null
 ;

 if (quote.shippingMethod() && quote.shippingMethod()['method_code']) 
 data.shippingMethodCode = quote.shippingMethod()['method_code'];
 data.shippingCarrierCode = quote.shippingMethod()['carrier_code'];
 

 quote.setTotals(result);
 cartCache.set('cart-data', data);
 ).fail(function (response) 
 errorProcessor.process(response);
 ).always(function () 
 // Stop loader for totals block
 totalsService.isLoading(false);
 );
;

return 
 /**
 * Array of required address fields.
 * @property Array.String requiredFields
 * @deprecated Use cart cache.
 */
 requiredFields: cartCache.requiredFields,

 /**
 * Get shipping rates for specified address.
 * @param Object address
 */
 estimateTotals: function (address) 
 var data = 
 shippingMethodCode: null,
 shippingCarrierCode: null
 ;

 if (quote.shippingMethod() && quote.shippingMethod()['method_code']) 
 data.shippingMethodCode = quote.shippingMethod()['method_code'];
 data.shippingCarrierCode = quote.shippingMethod()['carrier_code'];
 

 if (!cartCache.isChanged('cartVersion', customerData.get('cart')()['data_id']) &&
 !cartCache.isChanged('shippingMethodCode', data.shippingMethodCode) &&
 !cartCache.isChanged('shippingCarrierCode', data.shippingCarrierCode) &&
 !cartCache.isChanged('address', address) &&
 cartCache.get('totals') &&
 !cartCache.isChanged('subtotal', parseFloat(quote.totals().subtotal))
 ) 
 quote.setTotals(cartCache.get('totals'));
 else 
 loadFromServer(address);
 
 
;
);

MyModuleModelQuoteAddressTotalCustomShippingPrice.php

<?php

namespace MyModuleModelQuoteAddressTotal;

use MagentoFrameworkPricingPriceCurrencyInterface;
use MagentoQuoteModelQuoteAddressFreeShippingInterface;


class CustomShippingPrice extends MagentoQuoteModelQuoteAddressTotalAbstractTotal
null
 */
public function fetch(MagentoQuoteModelQuote $quote, MagentoQuoteModelQuoteAddressTotal $total)

 $result = null;
 $amount = $total->getDiscountAmount();
 if ($amount != 0) 
 $description = $total->getDiscountDescription();
 $result = [
 'code' => $this->getCode(),
 'title' => $description,
 'value' => $amount
 ];
 
 return $result;