Gsyfuy

I want to make changes(PHP code) to the method processPaymentConfiguration, but I don't know how I can override the method so my changes have a higher priority. I can alter the LayoutProcessor file but it's never good to apply changes to a core file.

So my question; is this possible and what do I need to do to achieve this?

Vendor/Module/Block/Checkout/LayoutProcessor.php

<?php

namespace VendorModuleBlockCheckout;



use MagentoFrameworkAppObjectManager;

use MagentoCheckoutBlockCheckoutLayoutProcessorInterface;

use MagentoCustomerModelAttributeMetadataDataProvider;

use MagentoUiComponentFormAttributeMapper;

use MagentoCheckoutBlockCheckoutAttributeMerger;

use MagentoCustomerModelOptions;



class LayoutProcessor implements LayoutProcessorInterface

{

    private $attributeMetadataDataProvider;

    protected $attributeMapper;

    protected $merger;

    private $options;



    public function __construct(

        AttributeMetadataDataProvider $attributeMetadataDataProvider,

        AttributeMapper $attributeMapper,

        AttributeMerger $merger

    ) {

        $this->attributeMetadataDataProvider = $attributeMetadataDataProvider;

        $this->attributeMapper               = $attributeMapper;

        $this->merger                        = $merger;

    }



    private function getOptions()

    {

        //same code as Magento/Checkout/Block/LayoutProcessor::getOptions()

    }





    private function getAddressAttributes()

    {

        //same code as Magento/Checkout/Block/LayoutProcessor::getAddressAttributes()

    }



    private function convertElementsToSelect($elements, $attributesToConvert)

    {

        //same code as Magento/Checkout/Block/LayoutProcessor::convertElementsToSelect()

    }



    public function process($jsLayout)

    {

        //same code as Magento/Checkout/Block/LayoutProcessor::process()

    }



    private function processPaymentConfiguration(array &$configuration, array $elements)

    {

        /*

        code from Magento/Checkout/Block/LayoutProcessor::processPaymentConfiguration()

        with a couple changes.

        It works when I apply the changes in code file (vendor/magento/magento-checkout/...)

        */

    }

}

When I var_dump processPaymentConfigurationfrom the core and my custom code, I get the same results. So it looks like the code executes and returns the right thing but nothing is happening.

Vendor/Module/etc/di.xml

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">

    <preference for="MagentoCheckoutBlockCheckoutLayoutProcessor" type="VendorModuleBlockCheckoutLayoutProcessor" />

</config>

you have to "extend" the class not "implement" interface..

class LayoutProcessor extends MagentoCheckoutBlockCheckoutLayoutProcessor

1. Create your own module if you do not have created it yet.



2. Implement MagentoCheckoutBlockCheckoutLayoutProcessorInterface::process in your module through YourModule/etc/frontend/di.xml.
   Check implementation in MagentoCheckoutBlockCheckoutLayoutProcessor::process as a reference



3. 
   

   In your new implementation of LayoutProcessorInterface::process method get all payment methods by

   
   
   

   $paymentList = $jsLayout['components']['checkout']['children']['steps']['children']['billing-step']['children']['payment']['children']['payments-list']['children'] ?? null;

   
   



4. Iterate through this payment list and modify layout configuration as needed.




5. Return modified $jsLayout from your implementation of LayoutProcessorInterface::process method.