How to Add a Customer Attribute Programmatically using Data Patch in Magento 2

In Magento 2.3.x, Magento has introduced the Data Patch interface Magento\Framework\Setup\Patch\DataPatchInterface to add or modify the EAV data.

In Magento 2.2 and 2.1 we were using InstallData or UpgradeData script to add a customer attribute programmatically. Though these scripts are still working in Magento 2.3.x for backward compatibility. But as a professional developer one should use data patch class to add or modify EAV data.

In this post, we will see how to add a customer attribute programmatically using a data patch in Magento 2.

Add a Customer Attribute Programmatically

To add a customer attribute using data patch create patch file MyCustomerAttribute.php under app/code/Vendor/Module/Setup/Patch/Data directory and add below code.

<?php


namespace Vendor\Module\Setup\Patch\Data;

use Magento\Framework\Setup\Patch\DataPatchInterface;
use Magento\Framework\Setup\Patch\PatchRevertableInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
use Magento\Customer\Setup\CustomerSetupFactory;
use Magento\Customer\Setup\CustomerSetup;

class MyCustomerAttribute implements DataPatchInterface, PatchRevertableInterface
{

    /**
     * @var ModuleDataSetupInterface
     */
    private $moduleDataSetup;
    /**
     * @var CustomerSetup
     */
    private $customerSetupFactory;

    /**
     * Constructor
     *
     * @param ModuleDataSetupInterface $moduleDataSetup
     * @param CustomerSetupFactory $customerSetupFactory
     */
    public function __construct(
        ModuleDataSetupInterface $moduleDataSetup,
        CustomerSetupFactory $customerSetupFactory
    ) {
        $this->moduleDataSetup = $moduleDataSetup;
        $this->customerSetupFactory = $customerSetupFactory;
    }

    /**
     * {@inheritdoc}
     */
    public function apply()
    {
        $this->moduleDataSetup->getConnection()->startSetup();
        /** @var CustomerSetup $customerSetup */
        $customerSetup = $this->customerSetupFactory->create(['setup' => $this->moduleDataSetup]);
        $customerSetup->addAttribute(
            \Magento\Customer\Model\Customer::ENTITY,
            'customer_pan_number',
            [
                'type' => 'varchar',
                'label' => 'Customer Pan Number',
                'input' => 'text',
                'source' => '',
                'required' => false,
                'visible' => true,
                'position' => 500,
                'system' => false,
                'backend' => ''
            ]
        );
        
        $attribute = $customerSetup->getEavConfig()->getAttribute('customer', 'customer_pan_number')->addData([
            'used_in_forms' => [
                'adminhtml_customer'
            ]
        ]);
        $attribute->save();

        $this->moduleDataSetup->getConnection()->endSetup();
    }

    public function revert()
    {
        $this->moduleDataSetup->getConnection()->startSetup();
        /** @var CustomerSetup $customerSetup */
        $customerSetup = $this->eavSetupFactory->create(['setup' => $this->moduleDataSetup]);
        $customerSetup->removeAttribute(\Magento\Customer\Model\Customer::ENTITY, 'customer_pan_number');

        $this->moduleDataSetup->getConnection()->endSetup();
    }

    /**
     * {@inheritdoc}
     */
    public function getAliases()
    {
        return [];
    }

    /**
     * {@inheritdoc}
     */
    public static function getDependencies()
    {
        return [
        
        ];
    }
}

Here customer_pan_number is our customer attribute. In line number 63 we have passed used_in_forms array value adminhtml_customer that means it is available in admin customer edit form.

As per requirement you can pass used_in_forms array

'used_in_forms' => [
'adminhtml_checkout',
'adminhtml_customer',
'adminhtml_customer_address',
'customer_account_edit',
'customer_address_edit',
'customer_register_address',
'customer_account_create'
];

After adding this class into your module please run below command to create customer attribute in database.
php bin/magento setup:upgrade

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