I have an order.php that is in fact a custom page template. This template loads the first step of my order form via:
<?php include('order/order-step-one.php'); ?>
Now in this order-step-one.php my Next-button (post method) has to send the user to /order/order-step-two.php
Currently this does not work. I need to find a way to include order-step-two in the original order.php via the submit button in order-step-one. How do I achieve this?