Magento 2 Create Invoice Programmatically

In Magento 2, apart from creating product and customer programmatically, you can also create invoice programmatically with ease when following the given guides in the Magento 2 create invoice programmatically topic.

Why do Magento 2 stores need to set up the program for creating the invoice? As you know, each time an invoice is created, that means an order is placed successfully and at the same time, Magento will notify you have earned the amount of money from the customer. However, by such normal way, you will get mass notifications from Magento 2 system as well as create the equivalent number of the invoices if your customer implements partial payment within the order. Therefore, the great solution to form the invoice while there is no dependency on the total paid of order.

This post is a helpful guide to help you use this solution at its best. You will only have to go through two simple steps to solve the pproblemright away. Let’s get started!

Mageplaza brings you two simple steps for that and here you are!

2 Steps to create invoice programmatically in Magento 2

Step 1: Declare event sales_order_invoice_pay
Step 2: Setup the observer class

Step 1: Declare event sales_order_invoice_pay

Start the settings with events.xml file in your custom module: /app/code/Mageplaza/HelloWorld/etc/events.xml

<?xml version="1.0"?>
    <event name="sales_order_invoice_pay">
        <observer name="webpos_sales_order_invoice_pay" instance="Mageplaza\HelloWorld\Observer\SalesOrderInvoicePay" />
    </event>  
</config>

Step 2: Setup the observer class

/app/code/Mageplaza/HelloWorld/Observer/SalesOrderInvoicePay.php

<?php
namespace Mageplaza\HelloWorld\Observer\Sales;
use Magento\Framework\Event\Observer as EventObserver;
use Magento\Framework\Event\ObserverInterface;
class SalesOrderInvoicePay implements ObserverInterface
{   
/**
* @param EventObserver $observer
* @return $this
*/
public function execute(EventObserver $observer)
{
     $invoice = $observer->getEvent()->getInvoice();
     $order = $invoice->getOrder();
   
     /* reset total_paid & base_total_paid of order */
     $order->setTotalPaid($order->getTotalPaid() - $invoice->getGrandTotal());
     $order->setBaseTotalPaid($order->getBaseTotalPaid() - $invoice->getBaseGrandTotal());
}    
}

Magento 2 PDF Invoice: Invoice customers with ease

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Conclusion

That’s all. The simple and easy-to-follow tutorial on creating invoices programmatically in Magento 2 is given to you. I hope that it actually works on your Magento 2 store. Invoices and creating accurate invoices are important in any online stores as it impacts on the customer trust and the order confirmation. Therefore, follow above-mentioned steps to create important invoices more easily and accurately.

Thanks for reading.

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Sam Thomas

CEO and Founder of Mageplaza. Pursueing a simple and healthy lifestyle. A friend, a husband and a dad of two children, a trainer and an influencer wannabe. He is a big fan of sports and travel, also.