How to Update Product Attribute using Data Patch in Magento 2?- Magento source24

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In Magento 2, you can use a Data Patch to update product attributes programmatically. Data Patches are a way to introduce changes to the database schema and data in a module. They are part of Magento's declarative schema approach and allow you to apply updates to your database in a versioned and structured manner.

Here's a step-by-step guide on how to update a product attribute using a Data Patch in Magento 2:

➤ Create the Data Patch PHP file:

First, create a new PHP file for your Data Patch in your custom module's Setup/Patch/Data directory. The file name should follow the convention Update<AttributeCode>Attribute.php, where <AttributeCode> is the code of the attribute you want to update. For example, if the attribute code is color, the file name should be UpdateColorAttribute.php.

➤  Implement the Data Patch:

Open the newly created file and implement the Data Patch interface. The Data Patch should extend \Magento\Framework\Setup\Patch\DataPatchInterface and override the apply() method. This method is where you'll write the code to update the product attribute.

Here's a basic example:

<?php

namespace Vendor\Module\Setup\Patch\Data;

use Magento\Framework\Setup\Patch\DataPatchInterface;

use Magento\Framework\Setup\ModuleDataSetupInterface;

use Magento\Framework\Setup\Patch\PatchRevertableInterface;

class UpdateColorAttribute implements DataPatchInterface, PatchRevertableInterface

{

    /** @var ModuleDataSetupInterface */

    private $moduleDataSetup;

    public function __construct(ModuleDataSetupInterface $moduleDataSetup)

    {

        $this->moduleDataSetup = $moduleDataSetup;

    }

    public function apply()

    {

        $this->moduleDataSetup->startSetup();

        

        // Update the product attribute here

        $attributeCode = 'color';

        $newAttributeValue = 'New Attribute Value';

        $this->moduleDataSetup->getConnection()->update(

            $this->moduleDataSetup->getTable('catalog_eav_attribute'),

            ['default_value' => $newAttributeValue],

            ['attribute_code = ?' => $attributeCode]

        );

        $this->moduleDataSetup->endSetup();

    }

    public static function getDependencies()

    {

        // Return the list of Data Patches this patch depends on (if any)

        return [];

    }

    public function revert()

    {

        $this->moduleDataSetup->startSetup();

        

        // Rollback the changes made in the apply() method (if possible)

        $this->moduleDataSetup->endSetup();

    }

    public function getAliases()

    {

        // Return any aliases for this patch (if needed)

        return [];

    }

}

➤ Run the Data Patch:

To apply the Data Patch, you need to run the following command from the Magento root directory:

bin/magento setup:upgrade

This command will execute the apply() method of your Data Patch and update the product attribute in the database.

Remember to replace Vendor\Module with your actual module name and adjust the attribute code and update logic according to your requirements.

Note: Before running any Data Patch, it's essential to back up your database to avoid any data loss due to potential mistakes or unintended changes. Additionally, make sure to thoroughly test your Data Patch in a development environment before applying it to a production environment.