This guide is only relevant for the Web integration.
Handling redirects is required for Payment Methods like iDeal that present a webpage for the customer to enter their credentials and validate their payment.
When the user selects such a Payment Method, Universal Checkout will first attempt to show the webpage in a popup or a browser tab to maintain the context, and will then safely bring the user back to the initial page to continue the flow.
This however does not work properly in the following scenario:
- The Payment Method opens a third-party banking app like Revolut through deep linking
Set up redirects
If creating a popup or tab is not possible, Universal Checkout will automatically redirect the user back to the returnUrl
provided in the checkout options.
123456789
const options = { // Other options redirect: { returnUrl: 'https://mystore.com/checkout', },} Primer.showUniversalCheckout(clientToken, options)
Feel free to pass additional query parameters to the returnUrl
. They will be automatically forwarded when the user is brought back.
Handle redirects
When the user is redirected back to returnUrl
, a clientToken
is passed as a query parameter:
1
https://mystore.com/checkout?clientToken=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9...
Grab the clientToken
from the query parameters and use it to render Universal Checkout. The checkout will automatically continue the payment flow.
1234567891011121314
// Grab all the query parameters using raw JSconst queryParameters = Object.fromEntries(new URLSearchParams(window.location.search).entries()) // If a client token is available in the query parameters, grab it// Otherwise, fetch a client token from your backend to start a new client sessionlet clientTokenif (queryParameters.clientToken) { clientToken = queryParameter.clientToken()} else { // clientToken = await getClientToken();} // Initialize Primer as usualPrimer.showUniversalCheckout(clientToken, options)
Universal Checkout will automatically resume the payment. If the payment was successfully completed, the callback onCheckoutComplete
will be called like for any other payment methods.
If the payment failed, or if the user cancelled their payment, an error message will be shown and Universal Checkout will once again present the configured payment methods to the user. At this point, the flow has been restarted and the user will be able to attempt another payment with a payment method of their choice.
You can use onCheckoutFail
to listen to the cancellation and restore your UI to its initial state.
Testing
For testing purposes, you can force a redirect by setting redirect.forceRedirect
to true.
12345678910
const options = { // Other options redirect: { returnUrl: 'https://mystore.com/checkout', forceRedirect: true, },} Primer.showUniversalCheckout(clientToken, options)
We encourage not forcing redirects in production in order to provide the best experience to your user.
Universal Checkout will seamlessly fallback to a redirect if needed!