Add your layout updates for particular store using xml

I’ve to add custom CSS for particular store on checkout page, so I’ve updated a layout using observer.

Please follow the below method. you need to copy the below event in your module.

<?xml version="1.0" encoding="UTF-8" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="layout_load_before">
        <observer name="magemonkeys_customshipping_addcustomcheckouthandle" instance="Magemonkeys\Customshipping\Observer\AddCheckoutLayoutUpdateHandleObserver" />
    </event>
</config>

<?xml version="1.0" encoding="UTF-8" ?>

</event>

</config>

And you can copy the below code for add the layout handle in Observer class.

<?php

namespace Magemonkeys\Customshipping\Observer;

use Magento\Catalog\Model\Category as CategoryModel;
use Magento\Framework\Event;
use Magento\Framework\Event\Observer as EventObserver;
use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\Registry;
use Magento\Framework\View\Layout as Layout;
use Magento\Framework\View\Layout\ProcessorInterface as LayoutProcessor;

/**
 *  AddCheckoutLayoutUpdateHandleObserver
 */
class AddCheckoutLayoutUpdateHandleObserver implements ObserverInterface
{
   
    const LAYOUT_HANDLE_NAME = 'checkout_index_index_emp';
    const LAYOUT_HANDLE_NAME_CUSTOMER = 'customer_account_emp';

    public $storeManager;
	public $customerSession;

    public function __construct(
        \Magento\Store\Model\StoreManagerInterface $storeManager,
		\Magento\Customer\Model\Session $customer
    ) {
        $this->storeManager = $storeManager;        
        $this->customerSession = $customer;        
    }
	
	public function getStoreCode()
	{
		return $this->storeManager->getStore()->getCode();
	}

    /**
     * @param EventObserver $observer
     *
     * @return void
     */
    public function execute(EventObserver $observer)
    {
        /** @var Event $event */
        $event = $observer->getEvent();
        $actionName = $event->getData('full_action_name');
		
        if ($actionName === 'checkout_index_index') {
            /** @var Layout $layout */
            $layout = $event->getData('layout');

            /** @var LayoutProcessor $layoutUpdate */
            $layoutUpdate = $layout->getUpdate();

            // check if Category Display Mode is "Mixed"
            if($this->getStoreCode() == 'abc_store' && $this->customerSession->isLoggedIn())
			{
                $layoutUpdate->addHandle(static::LAYOUT_HANDLE_NAME);
            }
        }
    }
}

<?php

namespace Magemonkeys\Customshipping\Observer;

use Magento\Catalog\Model\Category as CategoryModel;

use Magento\Framework\Event;

use Magento\Framework\Event\Observer as EventObserver;

use Magento\Framework\Event\ObserverInterface;

use Magento\Framework\Registry;

use Magento\Framework\View\Layout as Layout;

use Magento\Framework\View\Layout\ProcessorInterface as LayoutProcessor;

/**

* AddCheckoutLayoutUpdateHandleObserver

class AddCheckoutLayoutUpdateHandleObserver implements ObserverInterface

{

const LAYOUT_HANDLE_NAME = 'checkout_index_index_emp';

const LAYOUT_HANDLE_NAME_CUSTOMER = 'customer_account_emp';

public $storeManager;

public $customerSession;

public function __construct(

\Magento\Store\Model\StoreManagerInterface $storeManager,

\Magento\Customer\Model\Session $customer

) {

$this->storeManager = $storeManager;

$this->customerSession = $customer;

}

public function getStoreCode()

{

return $this->storeManager->getStore()->getCode();

}

/**

* @param EventObserver $observer

* @return void

public function execute(EventObserver $observer)

{

/** @var Event $event */

$event = $observer->getEvent();

$actionName = $event->getData('full_action_name');

if ($actionName === 'checkout_index_index') {

/** @var Layout $layout */

$layout = $event->getData('layout');

/** @var LayoutProcessor $layoutUpdate */

$layoutUpdate = $layout->getUpdate();

// check if Category Display Mode is "Mixed"

if($this->getStoreCode() == 'abc_store' && $this->customerSession->isLoggedIn())

{

$layoutUpdate->addHandle(static::LAYOUT_HANDLE_NAME);

}

That’s it. Now you can use the checkout_index_index_emp.xml file in your view/frontend/layout directory and make the changes as per your requirement.

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