Magento2: How to add a custom field with its value in the checkout cart summary?

Question

How to add a custom field with its value in the checkout cart summary in Magento 2 ?

I have followed many links, but none helped me.

Any help would be appreciated.

Answer 1

If you need just dynamic data at the cart or checkout page

1.create etc/frontend/di.xml file

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
   <type name="Magento\Checkout\Model\CompositeConfigProvider">
       <arguments>
           <argument name="configProviders" xsi:type="array">
               <item name="custom_provider" xsi:type="object">Vendor\Namespace\Model\CustomConfigProvider</item>
           </argument>
       </arguments>
   </type>
</config>

2.create the CustomConfigProvider.php in Vendor\Namespace\Model\ folder

<?php

namespace Vendor\Namespace\Model;
class CustomConfigProvider implements \Magento\Checkout\Model\ConfigProviderInterface
{
   public function getConfig()
   {
       $output['custom_config'] = 'Custom Config';
       return $output;
   }
}

3.Now Run the command

php bin/magento c:f

4. Please open the console of website and type the command

console.log(window.checkoutConfig.custom_config); OR window.checkoutConfig.custom_config

If the result is 'Custom Config', Now you can use this variable for your purpose where you want.

I hope this is helpful to you!!