Setting Order Status with Payment Gateway

[steven_werner]

I'm a Magento beginner. I'm trying to create a custom offline payment gateway, that will function like a check/money order type gateway. I've got something rough up and working by following this tutorial: https://www.magestore.com/magento-2-tutorial/2361-2/

class Pendingpayment extends Status
{
/**
* @var string[]
*/
protected $_stateStatuses = [Order::STATE_PENDING_PAYMENT];
}

But when orders are placed with this gateway, they are in the 'processing' status. If I pull the order using the API (mysite/rest/V1/orders/{id}), I see both a state and status of 'processing'.

How can I get this gateway to put orders in 'payment_pending' status until further action?

[Dharmesh B]

How are you are placing order?

Using REST API?

if YES, please share pentameters what you are trying to pass.

Also please check default order status from : Login to Admin -> Stores -> Order status.

Let me know details.

Thanks

Dharmesh

[steven_werner]

I am placing the orders through the browser/storefront as a shopper would. 

In the admin, I see a number of different statuses with 'Default Status'.