How can i update order status from checkout with custom payment module?

Question

I have payment processing on the checkout page on click of place order. I get the payment response on the same page. Now, I need to update the order status after the checkout form submission in the custom payment module. Does anyone know how to do it? Thanks in advance.

OR

Can I process the checkout form submission in the Controller Controller\Index\Index.php

Answer 1

Create file: etc/events.xml

<event name="sales_order_place_after">
    <observer name="sales_order_place_after_event" instance="Vendor\Module\Observer\SalesOrderPlaceAfter" />
</event>

Create Vendor/Module/Observer/SalesOrderPlaceAfter.php

public function execute(Observer $observer)
{
    /** @var Order $order */
    $order = $observer->getData('order');
    $payment = $order->getPayment();
    $order->setState('new');
    $order->setStatus('pending');
}