How to Override a Helper File in Magento 2

To override Magento 2 Helper file, follow below steps.

First, you need to create a di.xml file at below desired location.

Go to Vendor/Extension/etc/di.xml And add the following code into 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="Magento\Bundle\Helper\Data" type="Vendor\Extension\Helper\Bundle"/>
</config>

<?xml version="1.0"?>

</config>

Next step is to create bundle.php file at Vendor\Extension\Helper\Bundle.php

After that, you need to write your own customization logic in the file.

<?php
namespace Vendor\Extension\Helper;

use Magento\Bundle\Helper\Data as MainHelper;

class Bundel extends MainHelper
{
    public function getAllowedSelectionTypes()
    {
	//write your logic here
    }
}
?>

<?php

namespace Vendor\Extension\Helper;

use Magento\Bundle\Helper\Data as MainHelper;

class Bundel extends MainHelper

{

public function getAllowedSelectionTypes()

{

//write your logic here

}

It’s done. You have successfully override helper class using this method.

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