--- title: Accept a payment - Create a PaymentIntent with Ruby slug: accept-a-payment-create-a-paymentintent-with-ruby published_at: 2021-04-27 17:15:00 +0000 updated_at: 2023-01-30 22:53:43 +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 Ruby 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, create a payment intent, stripe-ruby, ruby, PaymentIntent, Stripe::PaymentIntent.create, /create-payment-intent, Collect a one time payment with Stripe, Accept a payment with Stripe, Stripe payments, Global payment series, global payments, create a stripe payment intent, sinatra, server, @cjav_dev] views: 2692 author: CJ Avilla url: https://www.cjav.dev/videos/accept-a-payment-create-a-paymentintent-with-ruby youtube_url: https://www.youtube.com/watch?v=079khYtqWPo youtube_id: 079khYtqWPo embed_url: https://www.youtube.com/embed/079khYtqWPo thumbnail_url: https://i.ytimg.com/vi/079khYtqWPo/hqdefault.jpg type: video --- # Accept a payment - Create a PaymentIntent with Ruby *Published: April 27, 2021* *Views: 2692* ## Watch [Watch on YouTube](https://www.youtube.com/watch?v=079khYtqWPo) [![Accept a payment - Create a PaymentIntent with Ruby](https://i.ytimg.com/vi/079khYtqWPo/hqdefault.jpg)](https://www.youtube.com/watch?v=079khYtqWPo) ## 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 Ruby 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 in this episode you'll learn how to add an endpoint to your server to create the payment intent then depending on whether you're using vanilla.js react on the web or like stripe ios or stripe android on mobile you can watch videos for those specific front-end implementations that will pair with the code we implement here so rather than start from scratch we're going to jump start our server implementation using the developer office hours based sample if you want to see how we 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 to a really handy tool for helping you build and test your stripe integrations from the terminal here we're going to run stripe samples create and we'll pass it developer office hours and for this one we'll give it the alias of tutorial we can now pick ruby and that'll download and scaffold a bare bones project with a simple server and client for us so in this episode we'll spend all of our time in the server directory and in future episodes we'll implement those front ends to confirm the payment so let's change into the server directory install dependencies with bundle install then open server.rb server.rb already contains a root route for rendering a basic html page and a skeleton for the webhook endpoint at a minimum we need one new server endpoint to create the payment intent that will later confirm on the front end this route will accept post requests as by convention we're creating a new resource a payment intent so we'll stick with the same naming convention as the stripe docs and name our route create payment intent we'll set the content type of the response to application json and get to work creating the payment intent the logic in this route is very simple we'll create a payment intent using stripe ruby client library to make an api request to stripe initially we'll hard code and pass just minimum required arguments so amount and currency so we'll pass 1999 and the currency as u.s dollars note this amount value is denoted in the smallest denomination for a given currency in this case cents finally we need to return some json with only the client secret property of this newly created payment intent let's jump into another terminal instance so we can start the server with ruby server and experiment with the endpoint using curl to make a direct request to the payment intent endpoint this will be a post request to localhost 4242 with some application json in the request body for now we're just going to pass just this empty json object notice the response is well-formed json and includes the client secret for the newly created payment intent returning to our code let's talk about the api call for creating a payment intent there's more than two dozen optional parameters for tailoring the payment experience for your customers one of those optional parameters is payment method types which takes a list of values for the payment method options you'd like to allow your customers to pay with so by default this is set to an array with one element a string with the word card making this payment intent only confirmable with a card payment method in practice you could hard code a list of string values for all the different payment method types you want to accept here in this series you'll learn how to accept a wide variety of payment method types so let's refactor our endpoint to accept some arguments by deserializing the json in the request body we'll extract an argument for the payment method type furthermore some payment method types only work with specific currencies so let's allow the currency to be passed from the client as well okay let's head back over to the terminal restart our server and update our curl request to pass in the payment method type and the currency in the request body great that works but if we try to pass au beck's debit as our payment method type and us dollars as the currency notice this fails because a ubex debit only works with australian dollars also notice that the error was returned as a raw string and not well-formed json if we update our curl request and pass aud the server responds with the client secret as expected this is great in the future we'll want to surface those failures in a nice format so that our frontend can consistently parse and present errors to customers so let's go wrap that api call in a begin rescue block and render the error response with well form json in a failure case so if the exception is a stripe error we'll return a 400 and in any other case we'll just return a 500. in both cases following the structure where the response has an error property pointing at an object with the 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 a bit easier to reason about after restarting our server and attempting to create a payment intent with the invalid combination of payment method type and currency we now see well form json error response now most payment method types complete asynchronously for some payments completed 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 that money flows through networks we highly recommend implementing web hooks to automate fulfillment we have an episode all about how to set up your webhook handler so let's update our webhook endpoints skeleton to simply print to the server log when payment events fire 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 you could use a third-party tool like zapier or ift as a low or no code solution for handling web hook notifications for now we'll simply check to see if the event type is one of paymentintent.create and print a simple status update from the terminal we'll restart our server and test our new webhook 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 aubex debit and australian dollars we'll see in the server log that the payment intent was created and we see in the logs for stripe listen here that the payment intent created event fired let's improve our log statement here to include the ids of the event and the payment intent and the status of the payment intent so that when receiving event types that start with payment intent dot an instance of the payment intent is available on event.data.object so pull that off of there we'll restart the server and fire another test event to confirm that our improved log statement looks good now we see the id of the event the id of the payment intent and the status of the payment intent note this payment was not created with a payment method explicitly so its statuses requires payment method we'll assign a new payment method when confirming the payment intent on the front end again covered in a future episode so as we add support for more payment methods in the future it'll be interesting to see these status messages in the server logs and align those with what the customer is seeing in the various states for payment intents note that depending on which payment method types you plan to support and which automations you're planning on building you likely won't need to handle every single one of these event types all right 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 that we don't need to hard code that on the front end this simple helper is purely for serving our publishable key when receiving a get request to slash config it's a best practice when working with mobile clients so that if for some reason you need to roll your api key the publishable key is not hard coded into these production mobile apps that are shipped to users which would require all of those mobile users to install an updated version of the app to get the new key so as a quick recap we added a new endpoint to create payment intents the api call to create a payment intent passes the amount currency and now a list of the types of payment methods 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 next we recommend heading over to one of the playlists that most closely fits your front-end implementation you can use the links in the description or head over to the stripe developers channel and take a look at those playlists thanks for watching and we'll see you in the next one you --- [Back to all videos](https://www.cjav.dev/videos) --- ## Hey Agent, thanks for visiting! 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