'How to detect if WooCommerce subscriptions checkout page is for a change payment gateway request?

I have a site using WooCommerce Subscriptions. I do some processing in a woocommerce_available_payment_gateways($available_gateways) filter handler function and I need to detect if the checkout process was triggered by the user wanting to change their payment method for a subscription (woo user docs: https://woocommerce.com/document/subscriptions/customers-view/#section-11).

After a lot of Googling all I could come up with was this:

WC_Subscriptions_Change_Payment_Gateway::$is_request_to_change_payment;

This is a public static property on WC_Subscriptions_Change_Payment_Gateway, but it using it feels a bit nasty!

Does any one know of a cleaner way to do this?

-C

phpwoocommercepayment-gatewayhook-woocommercewoocommerce-subscriptions


Solution 1:[1]

The URL for change payment gateway request will be looking like www.example.com/checkout/order-pay/1631818391/?pay_for_order=true&key=wc_order_3Qcv1jNShbWNt&change_payment_method=1631818391&_wpnonce=35a514c6ed. So isset() of $_GET['change_payment_method'] can be used in this context.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 mujuonly

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