Custom data with PayPal Standard

[Genevieve-K]

Hi. I have a problem when the donor uses PayPal Standard. For my cart, I need some data after payment validation, I store these data in $_REQUEST. For PayPal Standard, when the confirmation page is displayed after the payment, the initial $_REQUEST is not saved.
I see that a $_REQUEST is constructed in the generateSecureGatewayRouteUrl(string $gatewayMethod, int $donationId, array $args = []) function, in file PaymentGateway.php. I think I could add data in this $_REQUEST with the filter
handleCreatePayment(Donation $donation) : $gatewayData = apply_filters( "givewp_new_payment_{$donation->gatewayId}_gateway_data", null, $donation );
$gatewayData is passed as an argument to the createPayment() function. But in file PayPalStandard.php, in createPayment(), this variable $gatewayData is not added to $args.
Could you add it?

[jonwaldstein]

Hey @Genevieve-K

You are correct, gateways have the ability to use the $gatewayData param and filter to send data to itself from the form. In the latest version of GiveWP, PayPalStandard does indeed have that param in createPayment().

Can you help me understand what exactly you need to do after payment validation? What data do you need and what do you need to do with that data?

[Genevieve-K]

I developped a cart. The donor can make several donations ans pay them together. But if he makes a one-off donation and a recurring donation, he must pay them separately. I remove the donations from the cart when the payment is done, wheter it is pending or complete. I added an input in $_REQUEST to know the donations to remove from the cart.

[jonwaldstein]

Okay, I think what you are trying to do would require overriding a few parts of the gateway class in order to send specific request params along. It might actually be easier for you to use sessions to retrieve the donation / subscription ID's and check their statuses that way.