How to create Create Invoice Programmatically in Magento 2

May 10, 2021 The Online Helper

In Magento 2, aside from producing a product and customer programmatically, you can also generate invoices programmatically easily.

Why do Magento 2 websites require setting up the program for producing the invoice? As you know, every time an invoice is produced, that indicates that an order is placed successfully and at a similar time, Magento will tell you that have received the amount of money from the buyer. Nonetheless, in such a common way, you will get mass information from Magento 2 system as make an equal number of the invoices if your customer performs partial payment in the order.

Steps to creating invoice programmatically in Magento 2

There are only two steps for creating the invoice programmatically.

Declare event sales_order_invoice_pay
Setup the observer class

Step#1: Declare event sales_order_invoice_pay

Start the settings with the events.xml file in your custom module:

File path:

/app/code/VendorName/ModuleName/etc/events.xml

Code:

<?xml version="1.0"?>

    <event name="sales_order_invoice_pay">

        <observer name="webpos_sales_order_invoice_pay" instance="VendorName\ModuleName\Observer\SalesOrderInvoicePay" />

    </event>  

</config>

Step#2: Setup the observer class