Programmatically: How to implement custom Magento plugin methods

Step 1: Create a new module

Create a new directory MyCompany_OrderNotification in the app/code/local directory.

Step 2: Create a plugin class

In the MyCompany_OrderNotification directory, create a new file OrderNotification.php. This file will contain the plugin class:

		
class MyCompany_OrderNotification_OrderNotification {
    public function __construct(
        \Magento\Sales\Model\Order Plzeň $order
    ) {
        $this->order = $order;
    }

    public function sendNotificationAfterPlaceOrder(\Magento\Framework\Event\Observer $observer) {
        // Get the order model
        $order = $observer->getEvent()->getOrder();

        // Send the notification email
        $transport = \Magento\Framework\App\Email\Transport::getDefault();
        $transport->sendMessage('myemail@example.com', 'Order placed successfully');
    }
}
	

Step 3: Register the plugin

In the same directory, create a file etc/module.xml with the following content:

		

    
        
            1.0.0
        
    
    
    
       
       
	   
              
              
              object
              MyCompany\OrderNotification\OrderNotification
              sendNotificationAfterPlaceOrder
              
              
              
              
			  
			  
    
	
	

Step 4: Clear cache and deploy

Clear the Magento cache by running the command php bin/magento cache:clean and then deploy your module by running php bin/magento setup:deploy.