CODEWITHSUNDEEP
ruby-on-railsstripe-payments
zcserei
zcserei

Reputation: 665

How to change Rails object fields after it's been paid via Stripe Checkout?

In my application, a user can create a draft of an object, and then on a "finalise" view they can check if they only want the standard price or one of the two extra features as well (e.g. their entry being featured on the platform) - these are stored as three separate products each with their own price because I want to be able to track them separately in the future.

I am using Checkout for payments and my backend is Rails.

I am listening to webhooks, but I don't know how I could actually modify the object in question, since I can't see any webhook request body that contains the information I need.

What I imagine I'd need is something like this: "there has been a successful charge of $x related to your object with id 123, and the charge included product prod_asdf and prod_sdfg", and then I could update e.g. the paid and featured boolean fields of my object.

This seems like a no-brainer, since the products and prices are actually handled by Stripe and they are passed to the checkout session, I don't see why I can't access them from the webhooks?

EDIT: I'm wondering if passing necessary metadata to the Session object and then using the same metadata listening to a checkout.session.completed event is a good idea.

Upvotes: 0

Views: 188

Answers (1)

karbi
karbi

Reputation: 2173

You can link a Checkout Session back to your Listing object by including the related object ID in the metadata (https://stripe.com/docs/api/checkout/sessions/object#checkout_session_object-metadata) when you create the Checkout Session. When you listen for checkout.session.completed events, the event will come with a Checkout Session object. You can easily link the Checkout Session back to your Listing object by checking the metadata and it also has an amount_total field so that will tell you the total payment amount.

You can get the products included in a session from line_items (https://stripe.com/docs/api/checkout/sessions/object#checkout_session_object-line_items). Unfortunately, line_items is not included in the webhook event by default since it is expandable (https://stripe.com/docs/expand). After receiving the checkout.session.completed event you can use the ID to retrieve the Checkout Session with line_items expanded like this:

session = Stripe::Checkout::Session.retrieve(
  id: 'cs_test_xxx',
  expand: ['line_items'],
)
line_items = session.line_items

Alternatively, you can just retrieve the Checkout Session's line items (https://stripe.com/docs/api/checkout/sessions/line_items) like this:

line_items = Stripe::Checkout::Session.list_line_items('cs_test_D3OF4MY1VGflR8idkewd795t8MLd4PwA3wxdLCHikdRFTIkBecH6FKij', {limit: 5})

Upvotes: 1

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