How to Override Payment Helper Data Method Magento 2?

Question

I am trying to override Magento Payment Helper data in my extension but it's not working.

I have overriden by using the preference method.

I have put below code in app/code/Demo/PaymentTest/etc/di.xml

<preference for="Magento\Payment\Helper\Data" type="Demo\PaymentTest\Helper\Data" />

Here is my Helper code

<?php
namespace Demo\PaymentTest\Helper;
class Data extends \Magento\Payment\Helper\Data
{
    public function getStoreMethods($store = null, $quote = null)
    {
    }
}

I am trying to override getStoreMethods method in my helper but it's not calling it.

Can you please tell me what am I doing wrong?

Answer 1

If you want to rewrite payment method, I suggest you use a plugin.

Create the following di.xml in the etc folder of your module:

<config>
    <type name="Magento\Payment\Helper\Data">
        <plugin name="restrictPaymentMethods" type="Demo\PaymentTest\Plugin\RestrictPaymentMethods" sortOrder="1" />
    </type>
</config>

Then create Plugin\RestrictPaymentMethods.php :

<?php

namespace Demo\PaymentTest\Plugin;

class RestrictPaymentMethods
{

    public function afterGetStoreMethods(\Magento\Payment\Helper\Data $subject, $result)
    {
        // $result will contain the original result
        // You can modify the $result array to restrict the payment methods
    }
}