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PayPal Admin API Guide

PayPal is a fully integrated payment app that is supported both in the storefront checkout, and via the Admin API. PayPal transactions send the customer through a PayPal redirect flow, with the resulting order information provided back to your application. Below are the steps needed to get PayPal set up and working on the Admin API.

Important

PayPal custom checkouts require the use of the PayPal NVP/SOAP (Legacy) APIs. Please ensure that your valid NVP/SOAP credentials are configured in the Paypal Extension prior to attempting custom checkouts with PayPal over the Admin API.

For custom PayPal checkouts, there are two checkout flows available -- the standard method where a user enters their shipping address, chooses products, and then checks out via PayPal; and the "One-Click" method, where the user is not required to enter shipping information before being redirected to PayPal checkout.

Step 1 - Create Order

When creating a new order using PayPal using the orders_create API method, you must specify the payment_method=paypal as well as provide a payment_return_url. The payment_return_url is your endpoint that will receive a POST request containing the final order data (in Step 3).

Payment Details for Order with PayPal
{
    "payment_method": "paypal",
    "payment_details": {
        "payment_return_url": "<YOUR APPLICATION ENDPOINT>"
    }
}

Step 2 - Redirect Customer to Payment Complete URL

The response from Step 1 will provide a payment_complete_url. Your application should redirect the customer to this URL for completing the payment on PayPal.

Respone with Payment Complete URL
{
    "reference_transaction_id": null,
    "payment_complete_url": "https://www.paypal.com/checkoutnow?token=<PAYPAL TOKEN>"
}

Step 3 - Receive Order Data

After the customer has completed the checkout via the 3DS2 authentication page, they will be redirected to your application with a POST request containing data in the response key comprising all of the order information as a string. See examples below.

Heads Up

Order data structure follows Admin Order API and is application/x-www-form-urlencoded in a variable called response. If the order data is an empty dictionary {}, it means payment collection was unsuccessful and the order was not created.

Example Parsing of Order Data
import json

def order_receiver_view(request):
    data = json.loads(request.POST.get("response"))
    ...
    return HttpResponse(status=201)
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