Mijelz-payment-intent | Stripe Developers | Page 1

pallid girder Aug 19, 2022, 10:28 AM

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👋 Happy to help

rich yoke Aug 19, 2022, 10:28 AM

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Hi River

pallid girder Aug 19, 2022, 10:30 AM

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How do you collect payment method details currently?

rich yoke Aug 19, 2022, 10:30 AM

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Hey actually I havent started yet, I've just been watching guide and reading the docs

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Im running firebase cloud functions for my backend so thats basically my 'server'

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where I create the PI and stuff I assume

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Im using elements

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react elements

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Maybe to make it clearer idk if this is possible but I would like it so that when the customer hits "pay" or w/e, it hits my backend that handles talking to stripe and then if stripe says "ok the card was charged its all good" then I can within that same API function write to the DB (fulfilling the order). Returns response to my frontend that I can deal with, as long as I can confirm the card was charged in my api call.

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If it fails I can return to my frontend the error message and handle the UI

last pendant Aug 19, 2022, 10:52 AM

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We generally don't recommend synchronous fulfilment/post-payment actions like that

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Instead, you should rely on webhooks

rich yoke Aug 19, 2022, 10:53 AM

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I can rely on webhooks, I'd just have to setup a cronjob to clear out abandoned purchases

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Is it not possible to do synchronous with stripe though?

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It makes it a lot easier for me to build out the frontend if I can just hit one endpoint and get a response than wait on a webhook

last pendant Aug 19, 2022, 11:01 AM

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rich yoke Is it not possible to do synchronous with stripe though?

Well, it is. But there's no guarantee your user stays on-session after payment for the post-payment actions to be completed

rich yoke Aug 19, 2022, 11:03 AM

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I see, but I don't think I have any reason for the user to stay on session. Once the purchase is confirmed within that same function I can write to the DB fulfilling the order. Do you have a guide somewhere I can see how to do it sync?

last pendant Aug 19, 2022, 11:05 AM

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You mentioned front-end, maybe I misinterpreted what you meant

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How do you intend to handle 3DS?

rich yoke Aug 19, 2022, 11:06 AM

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I wanna use the PaymentElement, or if I can't the CardElement

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so I think stripe will put the modal for me and handle it

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As far as I understand I need to create a PI on my server -> sends that to frontend to stripe elements -> user clicks pay and then ... idk im lost after that

last pendant Aug 19, 2022, 11:09 AM

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Right, so that's front-end confirmation. I'm confused how your backend is performing confirmation in this instance

rich yoke Aug 19, 2022, 11:09 AM

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Oh I dont know lol

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I am very new to stripe

last pendant Aug 19, 2022, 11:09 AM

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rich yoke As far as I understand I need to create a PI on my server -> sends that to fron...

Exactly. Which is why you should use webhooks. What is after they're redirected to the bank for 3DS, they close your page before you can fire a backend request to your server to fulfil the payment?

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At that point they've paid, but your application has no knowledge of it

rich yoke Aug 19, 2022, 11:10 AM

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Oh I see I thought it was possible to just send the entire request to my backend

last pendant Aug 19, 2022, 11:10 AM

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Instead you'd rely on payment_intent.succeeded events and action them

last pendant Aug 19, 2022, 11:10 AM

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rich yoke Oh I see I thought it was possible to just send the entire request to my backend

Well you can do server-side confirmation: https://stripe.com/docs/payments/finalize-payments-on-the-server

Finalize payments on the server

Learn how to collect payment details and confirm the payment on the server.

rich yoke Aug 19, 2022, 11:11 AM

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So in that case I have to do webhooks and I would just write like the documentID in the dbase in the metadata field somewhere? I assume the webhook can send that to me so I know which to set "fullyPaid:true"

last pendant Aug 19, 2022, 11:11 AM

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But I don't think its necessary in your use case

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And we still recommend webhooks for fulfilment

last pendant Aug 19, 2022, 11:12 AM

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rich yoke So in that case I have to do webhooks and I would just write like the documentID...

Yep, you could use metadata to reconcile the payment with your backend

rich yoke Aug 19, 2022, 11:13 AM

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That works, I'd just have to save the data to the db in an 'unpaid' state. The best idea I have to just run a cron weekly and anything older than X date gets deleted.

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Which part do I add the metadata to, the PI right?

last pendant Aug 19, 2022, 11:13 AM

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Yes: https://stripe.com/docs/api/payment_intents/create#create_payment_intent-metadata

Stripe API reference – Create a PaymentIntent – curl

Complete reference documentation for the Stripe API. Includes code snippets and examples for our Python, Java, PHP, Node.js, Go, Ruby, and .NET libraries.

last pendant Aug 19, 2022, 11:14 AM

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rich yoke That works, I'd just have to save the data to the db in an 'unpaid' state. The b...

You wouldn't need to really persist any unpaid PIs to your backend

rich yoke Aug 19, 2022, 11:14 AM

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Ahh I should just explain a bit its not the PI its the thing we sell

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We sell certificates for like continuing edu etc

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so I have to save on that certificate that its unpaid and when the webhook returns 'paid' I flip the state and then can show it to the customer

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thats ok tho its nbd

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I'd make a call to save the data in the form submit handler for the Elements

last pendant Aug 19, 2022, 11:17 AM

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Got it

rich yoke Aug 19, 2022, 11:18 AM

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ty I will review this and hopefully get it integrated

last pendant Aug 19, 2022, 11:18 AM

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np!

#Mijelz-payment-intent