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Build two-step confirmation

Add an optional review page or run validations after a user enters their payment details.

While we recommend the standard integration for most scenarios, this integration allows you to add an extra step in your checkout. This provides the buyer an opportunity to review their order details or for you to run additional validations before confirming the order.

Set up Stripe

First, you need a Stripe account. Register now.

Use our official libraries for access to the Stripe API from your application:

Command Line
# Available as a gem
sudo gem install stripe
Gemfile
# If you use bundler, you can add this line to your Gemfile
gem 'stripe'

Enable payment methods

Vorsicht

This integration path doesn’t support BLIK or pre-authorized debits that use the Automated Clearing Settlement System (ACSS).

View your payment methods settings and enable the payment methods you want to support. You need at least one payment method enabled to create a PaymentIntent.

By default, Stripe enables cards and other prevalent payment methods that can help you reach more customers, but we recommend turning on additional payment methods that are relevant for your business and customers. See Payment method support for product and payment method support, and our pricing page for fees.

Collect payment details
Client-side

You’re ready to collect payment details on the client with the Payment Element. The Payment Element is a prebuilt UI component that simplifies collecting payment details for a variety of payment methods.

The Payment Element contains an iframe that securely sends payment information to Stripe over an HTTPS connection. Avoid placing the Payment Element within another iframe because some payment methods require redirecting to another page for payment confirmation.

The checkout page address must start with https:// rather than http:// for your integration to work. You can test your integration without using HTTPS, but remember to enable it when you’re ready to accept live payments.

Set up Stripe.js

The Payment Element is automatically available as a feature of Stripe.js. Include the Stripe.js script on your checkout page by adding it to the head of your HTML file. Always load Stripe.js directly from js.stripe.com to remain PCI compliant. Don’t include the script in a bundle or host a copy of it yourself.

checkout.html
<head>
  <title>Checkout</title>
  <script src="https://js.stripe.com/v3/"></script>
</head>

Create an instance of Stripe with the following JavaScript on your checkout page:

checkout.js
// Set your publishable key: remember to change this to your live publishable key in production
// See your keys here: https://dashboard.stripe.com/apikeys
const stripe = Stripe(
'pk_test_TYooMQauvdEDq54NiTphI7jx'
);

Add the Payment Element to your checkout page

The Payment Element needs a place to live on your checkout page. Create an empty DOM node (container) with a unique ID in your payment form:

checkout.html
<form id="payment-form">
  <div id="payment-element">
    <!-- Elements will create form elements here -->
  </div>
  <button id="submit">Submit</button>
  <div id="error-message">
    <!-- Display error message to your customers here -->
  </div>
</form>

When the form above has loaded, create an Elements instance with the mode, amount, and currency. These values determine which payment methods are shown to your customer.

Then, create an instance of the Payment Element and mount it to the container DOM node.

checkout.js
const options = {
  mode: 'payment',
  amount: 1099,
  currency: 'usd',
  paymentMethodCreation: 'manual',
  // Fully customizable with appearance API.
  appearance: {/*...*/},
};

// Set up Stripe.js and Elements to use in checkout form
const elements = stripe.elements(options);

// Create and mount the Payment Element
const paymentElementOptions = { layout: 'accordion'};
const paymentElement = elements.create('payment', paymentElementOptions);
paymentElement.mount('#payment-element');

The Payment Element renders a dynamic form that allows your customer to pick a payment method. The form automatically collects all necessary payments details for the payment method selected by the customer.

You can customize the Payment Element to match the design of your site by passing the appearance object into options when creating the Elements provider.

Collect addresses

By default, the Payment Element only collects the necessary billing address details. To collect a customer’s full billing address (to calculate the tax for digital goods and services, for example) or shipping address, use the Address Element.

Create a ConfirmationToken
Client-side

Use createPaymentMethod through a legacy implementation

If you’re using a legacy implementation, you might be using the information from stripe.createPaymentMethod to finalize payments on the server. Although we encourage you to follow this guide to Migrate to Confirmation Tokens, you can still access our old documentation to Build a two-step confirmation experience.

When the customer submits your payment form, call stripe.createConfirmationToken to create a ConfirmationToken to send to your server for additional validation or business logic before confirmation. You can inspect the payment_method_preview field to run the additional logic.

checkout.js
const form = document.getElementById('payment-form');
const submitBtn = document.getElementById('submit');

const handleError = (error) => {
  const messageContainer = document.querySelector('#error-message');
  messageContainer.textContent = error.message;
  submitBtn.disabled = false;
}

form.addEventListener('submit', async (event) => {
  // We don't want to let default form submission happen here,
  // which would refresh the page.
  event.preventDefault();

  // Prevent multiple form submissions
  if (submitBtn.disabled) {
    return;
  }

  // Disable form submission while loading
  submitBtn.disabled = true;

  // Trigger form validation and wallet collection
  const {error: submitError} = await elements.submit();
  if (submitError) {
    handleError(submitError);
    return;
  }

  // Create the ConfirmationToken using the details collected by the Payment Element
  const {error, confirmationToken} = await stripe.createConfirmationToken({
    elements,
    params: {
      payment_method_data: {
        billing_details: {
          name: 'Jenny Rosen',
        }
      }
    }
  });

  if (error) {
    // This point is only reached if there's an immediate error when
    // creating the ConfirmationToken. Show the error to your customer (for example, payment details incomplete)
    handleError(error);
    return;
  }

  // Now that you have a ConfirmationToken, you can use it in the following steps to render a confirmation page or run additional validations on the server
  return fetchAndRenderSummary(confirmationToken)
});

Show the payment details on the confirmation page

At this point, you have all of the information you need to render the confirmation page. Call the server to obtain the necessary information and render the confirmation page accordingly.

app.js
// Using Express
const express = require('express');
const app = express();
app.use(express.json());

app.post('/summarize-payment', async (req, res) => {
  try {
    // Retrieve the confirmationTokens and generate the response 
    const confirmationToken = await stripe.confirmationTokens.retrieve(req.body.confirmation_token_id);
    const response = summarizePaymentDetails(confirmationToken);

    // Send the response to the client
    res.json(response);
  } catch (e) {
    // Display error on client
    return res.json({ error: e.message });
  }
});

function summarizePaymentDetails(confirmationToken) {
  // Use confirmationToken.payment_method_preview to derive the applicable summary fields for your UI
  return {
    type: confirmationToken.payment_method_preview.type,
    // Add other values as needed here
  };
}
confirmation.js
const fetchAndRenderSummary = async (confirmationToken) => {
  const res = await fetch('/summarize-payment', {
    method: "POST",
    body: JSON.stringify({ confirmation_token_id: confirmationToken.id }),
  });

  const summary = await res.json();

  // Render the summary object returned by your server
};

Create a PaymentIntent
Server-side

Run custom business logic immediately before payment confirmation

Navigate to step 5 in the finalize payments guide to run your custom business logic immediately before payment confirmation. Otherwise, follow the steps below for a simpler integration, which uses stripe.confirmPayment on the client to both confirm the payment and handle any next actions.

When the customer submits your payment form, use a PaymentIntent to facilitate the confirmation and payment process. Create a PaymentIntent on your server with an amount and currency enabled. In the latest version of the API, specifying the automatic_payment_methods parameter is optional because Stripe enables its functionality by default. You can manage payment methods from the Dashboard. Stripe handles the return of eligible payment methods based on factors such as the transaction’s amount, currency, and payment flow. To prevent malicious customers from choosing their own prices, always decide how much to charge on the server-side (a trusted environment) and not the client.

Included on a PaymentIntent is a client secret. Return this value to your client for Stripe.js to use to securely complete the payment process.

main.rb
require 'stripe'
Stripe.api_key = 
'sk_test_4eC39HqLyjWDarjtT1zdp7dc'


post '/create-intent' do
  intent = Stripe::PaymentIntent.create({
    # To allow saving and retrieving payment methods, provide the Customer ID.
    customer: customer.id,
    # In the latest version of the API, specifying the `automatic_payment_methods` parameter is optional because Stripe enables its functionality by default.
    automatic_payment_methods: {enabled: true},
    amount: 1099,
    currency: 'usd',
  })
  {client_secret: intent.client_secret}.to_json
end

Submit the payment to Stripe
Client-side

Use stripe.confirmPayment to complete the payment using details from the Payment Element.

Provide the confirmation_token parameter with the ID of the ConfirmationToken you created on the previous page, which contains the payment information collected from the Payment Element.

Provide a return_url to this function to indicate where Stripe redirects the user after they complete the payment. Your user might be initially redirected to an intermediate site, such as a bank authorization page, before being redirected to the return_url. Card payments immediately redirect to the return_url when a payment is successful.

If you don’t want to redirect for card payments after payment completion, you can set redirect to if_required. This only redirects customers that check out with redirect-based payment methods.

checkout.js
const form = document.getElementById('payment-form');
const submitBtn = document.getElementById('submit');

const handleError = (error) => {
  const messageContainer = document.querySelector('#error-message');
  messageContainer.textContent = error.message;
  submitBtn.disabled = false;
}

form.addEventListener('submit', async (event) => {
  // We don't want to let default form submission happen here,
  // which would refresh the page.
  event.preventDefault();

  // Prevent multiple form submissions
  if (submitBtn.disabled) {
    return;
  }

  // Disable form submission while loading
  submitBtn.disabled = true;

  // Trigger form validation and wallet collection
  const {error: submitError} = await elements.submit();
  if (submitError) {
    handleError(submitError);
    return;
  }

  // Create the PaymentIntent and obtain clientSecret
  const res = await fetch("/create-intent", {
    method: "POST",
  });

  const {client_secret: clientSecret} = await res.json();

  // Confirm the PaymentIntent using the details collected by the ConfirmationToken
  const {error} = await stripe.confirmPayment({
    clientSecret,
    confirmParams: {
      confirmation_token: '{{CONFIRMATION_TOKEN_ID}}',
      return_url: 'https://example.com/order/123/complete',
    },
  });

  if (error) {
    // This point is only reached if there's an immediate error when
    // confirming the payment. Show the error to your customer (for example, payment details incomplete)
    handleError(error);
  } else {
    // Your customer is redirected to your `return_url`. For some payment
    // methods like iDEAL, your customer is redirected to an intermediate
    // site first to authorize the payment, then redirected to the `return_url`.
  }
});

Disclose Stripe to your customers

Stripe collects information on customer interactions with Elements to provide services to you, prevent fraud, and improve its services. This includes using cookies and IP addresses to identify which Elements a customer saw during a single checkout session. You’re responsible for disclosing and obtaining all rights and consents necessary for Stripe to use data in these ways. For more information, visit our privacy center.

See also

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Auf dieser Seite
Set up Stripe
Enable payment methods
Collect payment details
Collect addresses
Create a ConfirmationToken
Show the payment details on the confirmation page
Create a PaymentIntent
Submit the payment to Stripe
Disclose Stripe to your customers
See also
Verwendete Produkte
Payments