--- title: Accept a payment - Create a PaymentIntent with Go slug: accept-a-payment-create-a-paymentintent-with-go published_at: 2021-04-27 17:15:01 +0000 updated_at: 2023-01-30 22:53:37 +0000 summary: description: Accepting a one-time payment with a custom form requires two steps. First, creating a PaymentIntent on the server. Second, confirming the payment intent on the client. It's also recommended that you handle fulfillment for a purchase when receiving a webhook notification of successful payment. In this video, you'll learn how to create a PaymentIntent on the server using Go and how to setup a basic Webhook handler. For part two of this series to confirm a PaymentIntent using a variety of payment methods, watch one of the videos in the playlists for front end frameworks: HTML and JavaScript - https://www.youtube.com/playlist?list=PLy1nL-pvL2M7EUdqARPiayuj5cjGMLCvM React - https://www.youtube.com/playlist?list=PLy1nL-pvL2M6HFApWUDSGA4Y7btyKx7cE iOS - https://www.youtube.com/playlist?list=PLy1nL-pvL2M6yD1D72ceqqrW_1BqyN4It Android - https://www.youtube.com/playlist?list=PLy1nL-pvL2M4IvDG-DOFKi_UCEgQkHu3n If you'd like to learn how to create a PaymentIntent on the server in another server side language, consider watching one of these episodes: Ruby - https://www.youtube.com/watch?v=079khYtqWPo&list=PLy1nL-pvL2M50RmP6ie-gdcSnfOuQCRYk&index=12 Python - https://www.youtube.com/watch?v=Tgjwx-38Dic&list=PLy1nL-pvL2M55YVn0mGoQ5r-39A1-ZypO&index=11 PHP - https://youtu.be/BPfpPGl85tk Node.js - https://www.youtube.com/watch?v=WG4ehXSEpz4&list=PLy1nL-pvL2M5xNIuNapwmABwEy2uifAlY&index=11 Java - https://www.youtube.com/watch?v=-uyXCnPXegE&list=PLy1nL-pvL2M5TnSGVjEHTTMgdnnHi-KPg&index=11 Go - https://www.youtube.com/watch?v=cbsCxLDL4EY&list=PLy1nL-pvL2M5eqpSBR9KL7K0lcnWo0V0a&index=12 .NET - https://www.youtube.com/watch?v=mqEjRgoZWdo&list=PLy1nL-pvL2M4cNNoUtjWevYSci4ubsbhC&index=11 ### Resources Code: https://github.com/stripe-samples/accept-a-payment/tree/main/custom-payment-flow Documentation: https://stripe.com/docs/payments/payment-intents How intents work: https://stripe.com/docs/payments/intents Playlist: https://www.youtube.com/playlist?list=PLy1nL-pvL2M5eqpSBR9KL7K0lcnWo0V0a ### Table of contents 00:00 Overview 01:11 Setup the office hours sample 01:45 Add route to create-payment-intent 02:12 Create a basic PaymentIntent using the API with stripe-go 02:45 Test the endpoint with cURL 03:12 Accept payment method type and currency in request 04:57 Handle errors 05:48 Handle webhook notifications 08:23 Add a config route for fetching publishable keys 09:00 Recap and conclusion ### Presenter CJ Avilla, Developer Advocate at Stripe - https://twitter.com/cjav_dev ### Support If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat. ### Updates Sign up to stay updated with developer news: https://go.stripe.global/dev-digest ### Feedback If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88. #Stripe #Payments tags: [stripe, payments, Accept a payment - Create a PaymentIntent with Go, go, golang, stripe go, Payment, PaymentIntent, payment intent, create a payment, create a payment intent, @cjav_dev] views: 2360 author: CJ Avilla url: https://www.cjav.dev/videos/accept-a-payment-create-a-paymentintent-with-go youtube_url: https://www.youtube.com/watch?v=cbsCxLDL4EY youtube_id: cbsCxLDL4EY embed_url: https://www.youtube.com/embed/cbsCxLDL4EY thumbnail_url: https://i.ytimg.com/vi/cbsCxLDL4EY/hqdefault.jpg type: video --- # Accept a payment - Create a PaymentIntent with Go *Published: April 27, 2021* *Views: 2360* ## Watch [Watch on YouTube](https://www.youtube.com/watch?v=cbsCxLDL4EY) [![Accept a payment - Create a PaymentIntent with Go](https://i.ytimg.com/vi/cbsCxLDL4EY/hqdefault.jpg)](https://www.youtube.com/watch?v=cbsCxLDL4EY) ## Description Accepting a one-time payment with a custom form requires two steps. First, creating a PaymentIntent on the server. Second, confirming the payment intent on the client. It's also recommended that you handle fulfillment for a purchase when receiving a webhook notification of successful payment. In this video, you'll learn how to create a PaymentIntent on the server using Go and how to setup a basic Webhook handler. For part two of this series to confirm a PaymentIntent using a variety of payment methods, watch one of the videos in the playlists for front end frameworks: HTML and JavaScript - https://www.youtube.com/playlist?list=PLy1nL-pvL2M7EUdqARPiayuj5cjGMLCvM React - https://www.youtube.com/playlist?list=PLy1nL-pvL2M6HFApWUDSGA4Y7btyKx7cE iOS - https://www.youtube.com/playlist?list=PLy1nL-pvL2M6yD1D72ceqqrW_1BqyN4It Android - https://www.youtube.com/playlist?list=PLy1nL-pvL2M4IvDG-DOFKi_UCEgQkHu3n If you'd like to learn how to create a PaymentIntent on the server in another server side language, consider watching one of these episodes: Ruby - https://www.youtube.com/watch?v=079khYtqWPo&list=PLy1nL-pvL2M50RmP6ie-gdcSnfOuQCRYk&index=12 Python - https://www.youtube.com/watch?v=Tgjwx-38Dic&list=PLy1nL-pvL2M55YVn0mGoQ5r-39A1-ZypO&index=11 PHP - https://youtu.be/BPfpPGl85tk Node.js - https://www.youtube.com/watch?v=WG4ehXSEpz4&list=PLy1nL-pvL2M5xNIuNapwmABwEy2uifAlY&index=11 Java - https://www.youtube.com/watch?v=-uyXCnPXegE&list=PLy1nL-pvL2M5TnSGVjEHTTMgdnnHi-KPg&index=11 Go - https://www.youtube.com/watch?v=cbsCxLDL4EY&list=PLy1nL-pvL2M5eqpSBR9KL7K0lcnWo0V0a&index=12 .NET - https://www.youtube.com/watch?v=mqEjRgoZWdo&list=PLy1nL-pvL2M4cNNoUtjWevYSci4ubsbhC&index=11 ### Resources Code: https://github.com/stripe-samples/accept-a-payment/tree/main/custom-payment-flow Documentation: https://stripe.com/docs/payments/payment-intents How intents work: https://stripe.com/docs/payments/intents Playlist: https://www.youtube.com/playlist?list=PLy1nL-pvL2M5eqpSBR9KL7K0lcnWo0V0a ### Table of contents 00:00 Overview 01:11 Setup the office hours sample 01:45 Add route to create-payment-intent 02:12 Create a basic PaymentIntent using the API with stripe-go 02:45 Test the endpoint with cURL 03:12 Accept payment method type and currency in request 04:57 Handle errors 05:48 Handle webhook notifications 08:23 Add a config route for fetching publishable keys 09:00 Recap and conclusion ### Presenter CJ Avilla, Developer Advocate at Stripe - https://twitter.com/cjav_dev ### Support If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat. ### Updates Sign up to stay updated with developer news: https://go.stripe.global/dev-digest ### Feedback If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88. #Stripe #Payments ## Transcript in this episode we cover the basic server-side implementation for accepting a one-time payment with a custom form if you're interested in a faster integration path using stripe hosted checkout head over to the checkout playlist in the stripe developers channel the payment flow you'll see today for collecting a one-time payment has two steps first creating the payment intent on the server and second confirming the payment on the client using the client secret for the payment intent so in this episode you're going to learn how to add an endpoint to your server to create a new payment intent then depending on whether you're using vanilla.js or react on the web or stripe ios or stripe android on mobile you can watch videos for those specific front front-end implementations that will pair with the code we've implemented here so rather than start from scratch we're going to jump start our server implementation using this the developer office hours base sample if you want to see how to go from zero to one check out the starter episode linked in the description you might also be interested in an episode about working with the stripe cli it's a handy tool for helping you build and test your stripe integration all right so from the terminal we run stripe samples create developer office hours and we'll give this one an alias of tutorial now we could pick go http and that'll download and scaffold a bare bones project with a simple server and client html file for us in this episode we'll spend all of our time in the server directory and in future episodes we'll implement the frontend to confirm so let's change into that server directory and open server.go you'll notice that it already has a root route for rendering some basic html and a skeleton for the web hook endpoint so at a minimum we need to add one new server endpoint to create the payment intent that will later confirm on the front end let's stick with the same naming convention as the stripe docs and name our route create payment intent so this route will accept post requests as by convention we are creating a new resource for creating a payment intent and the logic in this route is very simple so we're going to create a payment intent using the stripe go client library to make an api request to stripe initially we'll hard code and just pass the minimum required arguments in these params so just amount and currency this amount value is denoted in the smallest denomination for the given currency so in this case sense finally we need to return some json with only the client secret property of the newly created payment intent let's jump into another terminal instance so we can start the server with go run server.go and experiment with the endpoint using curl to make a direct request to the payment intent endpoint so this is going to be a post request to localhost 4242 and we'll just pass an empty json object in the request body notice this response is well-formed json and includes the client secret for the newly created payment intent returning to our code let's talk about this api call for creating a payment intent it turns out there are more than two dozen optional parameters available for tailoring the payment experience for your customers one of those optional parameters is payment method types which takes a list of string values for the payment method options you'd like to allow your customers to pay with so by default this is set to a slice with one element the string with the word card and making this payment intent only confirmable with a card payment method so in practice you would hard code a list of string values for all the payment method types you want to accept here but in this series you're going to learn how to accept a wide variety of different payment method types so let's refactor our endpoint to accept some arguments by deserializing and unmarshaling that json request body so we'll extract an argument for the payment method type that we want to work with and furthermore some payment method types only work with specific currencies so let's also allow the currency to be passed from the client as well all right let's head back to the terminal restart our server and update our crow request to pass in the payment method type and the currency in the request body cool that works but if we try to pass a ubex debit as our payment method type and usd as the currency notice this fails in this case we get a response with an empty client secret and we can see in the server logs an error message explaining that a ubex debit only works with australian dollars so if we update the curl request to pass in aud the server responds with the client secret as expected so in the future we'll want to surface errors in a nice format so that our front end can consistently parse and present errors to customers so let's store the error response from the api call and render an error response with a well-formed json in a failure case so we're going to use right the right json helper here to return a 400 status code and follow the structure where the response has an error property pointing at an object with a string message this matches the shape returned directly from the stripe api for client-side calls so it'll make implementing error handling logic on the clients just a little bit easier to reason about all right so after restarting our server again and attempting to create a payment intent within an invalid combo of payment method type and currency we now see a well-formed json error response most payment method types complete payment asynchronously for some payments complete nearly instantly like cards but for others payments can take a few days or even more to complete due to the asynchronous nature of the way money flows through networks we highly recommend implementing webhooks to automate fulfillment we have episodes all about how to set up your webhook handler so let's update our webhook endpoint here to simply print this to the server log when a payment intent event fires it's quite common to automate things like email notifications updating your database pulling from inventory printing shipping labels and more as part of your webhook handler also worth noting that you could use a third party library or a tool like zapier or ift as a low or no code option for handling web hook notification so for now we're simply going to check and see if the event type is one of payment intent doc created and print a simple status update to the server log from the terminal we'll restart our server and test our new web hook logic with the stripe cli using the listen command stripe listen forms a direct connection from stripe to this locally running server so that when events happen on the demo stripe account they're delivered to the development server without needing any tunneling software like ngrok the stripe listen command accepts a url to which events should be forwarded now if we successfully create a new payment intent with ideal and euros we'll see in the server log that the payment intent was created and we can see in the logs for stripe listen that the paymentintent.created event fired so let's head over and improve our log statement to include the ids of the payment intent and the event and the status of the payment intent so you'll notice that when receiving event types that start with payment intent dot an instance of the payment intent is available on event.data.raw and we need to unmarshal that into an actual instance so we'll restart the server and fire another test to confirm our improved log statement now we see here the id of the event the id of the payment intent and the status of the payment intent note that this payment intent was not created with a specific payment method so its status is requires payment method we'll assign a new payment method when confirming the payment on the front end again covered in a future episode so as we add support for more different payment methods in the future it'll be interesting to see these different status messages in the server logs and align those with what the customer sees and with the various states for payment intent so note that depending on which payment method types you plan to support and which automations you're looking to build you likely won't need to handle every single one of these event types okay cool so at this point the server is technically ready to add a front end however we'll add one last simple config route for fetching the publishable key so we don't need to hard code that on the front end this simple helper is purely for serving our publishable keys when receiving a get request to slash config this is a best practice when working with mobile clients so that if for some reason you need to roll your api keys the publishable key is not hard coded into production mobile apps shipped to users that would require that like all your users install an updated version of the app to get the new key as a quick recap we added a new endpoint to create payment intents and the api call to create the payment intent passes the amount the currency and the type of payment method we want to allow we also added some logging to the webhook handler for debugging and looking to the future when implementing application logic to automate fulfillment and finally we added a quick helper route for returning the publishable key so that we don't hard code that in mobile clients next we recommend heading over to one of the playlists that most closely fits your frontend implementation you can use the links in the description or head over to the stripe developer channel and take a look at those playlists thanks so much for watching and we'll see you in the next one --- [Back to all videos](https://www.cjav.dev/videos) --- ## Hey Agent, thanks for visiting! 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