I need to override the action fired when a customer sets a gift card in his cart. I need to apply a custom check against an external web service about the validity of the gift card applied.

Which is the file that I need to override?

Seems that I need to override this file:


Where I need to write my override inside my app folder?

  • Did you got the solution?
    – aravind
    Oct 9, 2019 at 4:40

1 Answer 1


Here is a small example how to override Core Model file in Magento 2.

Step 1

Create a di.xml file in a following directory Vendor/Module/etc

<?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\Catalog\Model\Product" type="Vendor\Module\Model\Rewrite\Catalog\Product" />

Step 2

The step2 to overriding or rewriting Magento2 model is to create a Product.php helper file in the following directory Vendor/Module/Model/Rewrite/Catalog

* Catalog Product Rewrite Model
namespace Vendor\Module\Model\Rewrite\Catalog;
class Product extends \Magento\Catalog\Model\Product
public function __construct()
echo "Overrding/ Rewrite Working"; die();
  • Thank you. The di.xml was the missing part! Oct 15, 2019 at 9:37
  • @AndreaCrevola Please approve my answer... Oct 15, 2019 at 11:16

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