Merge Guest Order with Registered Customer – Magento2

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In Today’s Blog we are explaining Step by Step how you can merge your guest orders with your registered customer,

Sometime your registered customer place order as guest in your website, So You can merge that order with your registered customer so customer can manage his order which he placed as guest.

So First of all you need to create a Module.

Here we are creating a module name MagentoAcademy/MergeCustomer

In Module we are creating registration.php

<?php

/**
 * Module configuration
 */
\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'MagentoAcademy_MergeCustomer',
    __DIR__
);

Now we will create etc/module.xml

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
<module name="MagentoAcademy_MergeCustomer" setup_version="1.0.0">
    <sequence>
        <module name="Magento_Customer"/>
        <module name="Magento_Sales"/>
    </sequence>
</module>
</config>

Here you can see we have added sequence Magento_Customer and Magento_Sales,

This I have added bcz here we are using Customer and Orders both So it should

be your dependent module bcz without this module your MergeCustomer module is not for use

Now you need to create an etc/events.xml file

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
   
        
    <event name="sales_order_place_after">
        <
        <observer name="sales_order_place_after_event" instance="MagentoAcademy\Sales\Observer\SalesOrderPlaceAfter" />
    </
    </event>
</
</config>

Now Create Observer/SalesOrderPlaceAfter.php

<?php

namespace MagentoAcademy\Sales\Observer;

use Magento\Customer\Model\ResourceModel\CustomerRepository;
use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\Event\Observer;
use Magento\Framework\Exception\LocalizedException;

class SalesOrderPlaceAfter implements ObserverInterface
{
    public function __construct(CustomerRepository $customerRepository)
    {
        $this->customerRepository = $customerRepository;
    }
    /**
     * @param Observer $observer
     * @throws \Magento\Framework\Exception\LocalizedException
     */
    public function execute(Observer $observer)
    {
        $order = $observer->getEvent()->getOrder();

        if($order->getCustomerIsGuest()) {
            $this->mergeGuestOrders($order);
        }
    }
     
    public function mergeGuestOrders($order)
    {
        $customerEmail = $order->getCustomerEmail();

        try{
            $customer = $this->customerRepository->get($customerEmail);

            if (!empty($customer)) {
                    $order->setCustomerId($customer->getId());
                    $order->setCustomerFirstname($customer->getFirstname());
                    $order->setCustomerLastname($customer->getLastname());
                    $order->setCustomerGroupId($customer->getGroupId());
                    $order->setCustomerIsGuest(0);
            }
        }catch (LocalizedException $e) {

        }
    }
}//end class

Now Enable this module by run below command

php bin/magento module:enable Magento_Academy

and run php upgrade command

php bin/magento setup:upgrade

and lastly flush your cache

php bin/magento cache:flush

You can Download Our Merge Order to Guest Magento2 Extension from MarketPlace as well for free

https://marketplace.magento.com/mageacademy-mergecustomer.html

Hope this solution will help in your Business

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