Payment flows
Understand the flow of a transaction through Doo Payment
This chapter will cover the payment flows available with Doo Payment. Please reach out to us to learn more about the payment flows supported!
Payments flow
There are multiple stages in a Payment flow depending on the payment methods that are involved. Considering an one-time payment method where there was no redirection involved, the following stages form the Payment flow:
a) Creating a Payment: When your customer wants to checkout, create a payment by hitting the payments/create endpoint. Fetch and store the payment_id and client_secret
b) Loading the SDK: After your customer checks out, load the Doo Payment SDK by initiating it with the client_secret and publishable_key
c) SDK being rendered: After you initiate the SDK, the SDK makes several API calls involving the /sessions and /payment_methods endpoints to load relevant payment methods and any saved cards associated with the customer
d) Customer enters the payment method data: After the SDK is fully rendered, your customer would choose a payment method and enter the relevant information and click pay
e) Confirming the payment: After the customer clicks pay, the SDK calls the payments/confirm endpoint with the customer's payment method details and post response, it displays the payment status
Here's a more detailed version of the payment flow:
How does Payment flow vary across Payment methods?
| Customer Action | Direct/Redirect flows | Payment- finalized immediately | Payment- finalized later |
|---|---|---|---|
| Customer action required before payments/ confirm | Within Doo Payment SDK | 1. Non 3DS Cards | 1. Bank Debits like ACH Debit, BACS Debit, SEPA Debit |
| Customer action required before payments/ confirm | 3rd party Redirect/SDK | 1. Wallets like Apple Pay, Google pay, Paypal, AliPay 2. BNPL like Klarna, Afterpay, Affirm | |
| Customer action required after payments/ confirm | 3rd party Redirect | 1. 3DS cards 2. Bank Redirects like iDeal, Giropay, eps | 1. Bank Transfers like ACH Transfer, SEPA Transfer, BACS Transfer, Multibanco |
Functionalities provided by Doo Payment
What are PaymentIntent and PaymentAttempt objects and how do they work in Doo Payment?
Doo Payment uses the PaymentIntent object to track the status of a payment initiated by you. Since, Doo Payment enables retrying a single payment multiple times across different processors until a successful transaction, we track each of these payment attempts through separate PaymentAttempt objects.
While PaymentIntent and PaymentAttempt have their own state machines, the various states in PaymentAttempt are also constrained by their respective mapping to the PaymentIntent statuses.
PaymentIntent state machine:
The following is an abridged version of the PaymentIntent state machine flow that covers majority of the above payment use-cases.
PaymentAttempt state machine:
The following is an abridged version of the PaymentAttempt state machine flow that covers majority of the above payment use-cases.
