Payapl Rest-API / Paypal Plus: When should i execute the "Patch Payment"-Request after the "Create Payment"?

Question

I try to integrate Paypal Plus. Everything works fine now (well, almost everything :) )

1. Create Payment
2. Render the Paypal Plus Iframe
3. Click an external Button to redirect the User to the Paypal hosted Pages
4. Display the Review-Page
5. Execute Payment und display the Thank You-Page

Following the Paypal-Plus-Integration Guide, i should not provide any personal Data in the Create-Payment-Call. For this i should do an Update-Payment-Call.

But how do I know, that the User has clicked an Paypal-Payment-Option within the Paypal-Iframe? If i configure some third-party-payments, i can define a callback. But there is no callback, if the user selects a paypal-payment-method. So, after the user has clicked on the external continue-Button, the user is directly redirected to the paypal-hosted pages, and i got no chance to proceed the Update-Call ("Patch"-Request, to add the Billing-Adress to the paypal payment session, for e.g.).

Can somebody help me?

I read the manual a lot of times and googled, viewed some yt-videos .. but, it seems, that i did not understand the flow.. ;-)

What is your exact flow, if you use Paypal-Plus and their Iframe Payment-Wall...?

Answer 1

I struggled also with this problem and I solved it now with a curl patch request after the initial request. I have actual no Idea if this is a problem with thirdparty-payment-methods. I will take a look in the future if this will work in the same way. Actually I'm satisfied that paypal plus is working with the payer_info.

$ch = curl_init($paypalUrl.'/v1/payments/payment/'.$paymentID);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Authorization: Bearer '.$json->access_token
));

$data =
'[{
    "op": "add",
    "path": "/payer/payer_info",
    "value": {
        "first_name": "Max",
        "last_name": "Mustermann",
        "email": "[email protected]",
        "billing_address": {
            "line1": "Lieferstr. 1",
            "city": "Berlin",
            "country_code": "DE",
            "postal_code": "12345"
        }
    }
}]';

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PATCH');
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

$result = curl_exec($ch);
$jsonResult = json_decode($result);

curl_close($ch);

The other idea would be to use a own in between site like here on page 23 mentioned with the nextpage.phpon window.location for the continue button. And call here the patch request. Hopeful it can help someone!

Cheers