/flutterflow-integrations

FlutterFlow and Worldpay integration: Step-by-Step Guide 2024

Learn how to integrate FlutterFlow with Worldpay in this step-by-step guide. Follow our easy instructions to streamline your payment process efficiently.

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What is Worldpay?

Worldpay is a global payment processing company that facilitates seamless transaction services for businesses across various channels including online, face-to-face, and over the phone. It provides safe and secure payment services for small and large businesses, processing payments for all major card schemes globally. Worldpay is highly regarded in the industry for its advanced technology and security protocols which help in preventing fraud and ensuring fast and reliable transactions.

Matt Graham, CEO of Rapid Developers

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How to integrate FlutterFlow with Worldpay?

 

Step 1: Setting Up a Worldpay Account

 
  • Sign Up or Log In:
    • If you don't have a Worldpay account, visit the Worldpay website and sign up.
    • If you already have an account, log in using your credentials.
  • Obtain API Credentials:
    • Navigate to the section in your Worldpay dashboard where you can generate API credentials.
    • Copy the API Key and Secret Key as you'll need these later for integration.
 

Step 2: Setting Up Your FlutterFlow Project

 
  • Create a New Project:
    • Open FlutterFlow and create a new project or open an existing one.
    • Ensure your FlutterFlow project is set up properly with the necessary dependencies.
  • Enable HTTP Requests:
    • Go to your project settings within FlutterFlow.
    • Enable HTTP requests to allow communication with Worldpay's API.
 

Step 3: Creating the Payment Form

 
  • Add New Page:
    • Inside your FlutterFlow project, add a new page named "PaymentPage" (or any other relevant name).
  • Design Form Fields:
    • Drag and drop form widgets to create fields for:
      • Card Number
      • Expiry Date
      • CVV
      • Cardholder Name
      • Billing Address (Optional)
  • Add Submit Button:
    • Drag and drop a button widget for the user to submit their payment information.
 

Step 4: Installing Necessary Packages

 
  • Open pubspec.yaml:
    • In FlutterFlow, navigate to the `pubspec.yaml` file of your project.
  • Add HTTP Package:
    • Add the http package to your dependencies:
      • yaml
dependencies:
  http: ^0.13.3
    • Click "Save" to install the package.
 

Step 5: Configuring the Payment Logic

 
  • Create API Call Function:
    • Navigate to the backend section of FlutterFlow and create a new "Custom Function" for making HTTP requests to the Worldpay API.
    • Example in Dart:
      • dart
import 'package:http/http.dart' as http;
import 'dart:convert';

Future processWorldpayPayment(String cardNumber, String expiryDate, String cvv, String holderName) async {
  final String apiUrl = "https://api.worldpay.com/v1/orders";
  final String apiKey = "your_api_key\_here";
  final String secretKey = "your_secret_key\_here";

  final response = await http.post(
    Uri.parse(apiUrl),
    headers: {
      'Authorization': 'Basic ' + base64Encode(utf8.encode('$apiKey:$secretKey')),
      'Content-Type': 'application/json',
    },
    body: jsonEncode({
      "token": cardNumber,
      "amount": 1000, // Amount in cents
      "currencyCode": "USD",
      "name": holderName,
      "cardNumber": cardNumber,
      "expiryMonth": expiryDate.split("/")[0],
      "expiryYear": expiryDate.split("/")[1],
      "cvc": cvv
    }),
  );

  if (response.statusCode == 200) {
    print("Payment processed successfully");
  } else {
    print("Payment failed: ${response.body}");
  }
}
  • Link Function to Button:
    • Go back to your "PaymentPage" and select the button widget.
    • Link it to the `processWorldpayPayment` function, passing the user-input values as parameters.
 

Step 6: Handling Payment Responses

 
  • Display Result:
    • Use FlutterFlow's UI components to display success or error messages based on the response from the `processWorldpayPayment` function.
    • For instance, you can use a dialog box or a snackbar widget to notify the user.
 

Step 7: Testing Integration

 
  • Run the App:
    • Run your FlutterFlow app on a simulator or physical device.
  • Test Payments:
    • Enter dummy payment information (use Worldpay's test card details) to verify if the integration works properly.
  • Monitor Logs:
    • Check logs and responses within your FlutterFlow app to ensure transactions are being processed correctly.
 

Step 8: Move to Production

 
  • Switch to Live API Keys:
    • Once you've tested thoroughly and everything works as expected, switch from Worldpay's test API keys to live keys.
  • Final Deployment:
    • Deploy your FlutterFlow project to production.
 

Additional Tips

 
  • Secure Your API Keys:
    • Ensure your API keys are securely stored and not hardcoded in your application.
  • Error Handling:
    • Implement comprehensive error handling for network failures, invalid card details, etc.
  • Compliance:
    • Ensure your application complies with PCI DSS standards for handling payment information.

FlutterFlow and Worldpay integration usecase

Scenario:
A fitness startup aims to enhance its e-commerce capabilities by allowing users to purchase gym memberships and fitness services directly through their mobile app. They use FlutterFlow to build a customized app where users can explore different membership options, book personal training sessions, and purchase fitness products. They want to integrate Worldpay for seamless and secure payment processing within the app.

Solution: Integrating FlutterFlow with Worldpay

Mobile App Creation:

  • The fitness startup leverages FlutterFlow to design a user-friendly app that showcases various gym memberships, training packages, and fitness products.
  • The app includes detailed product pages, booking calendars, and a shopping cart.

Setting Up the Integration:

  • The startup installs the Worldpay API integration within FlutterFlow and configures it with their Worldpay API key and merchant credentials.
  • They set up workflows in FlutterFlow that trigger when a user initiates a payment process on the app.

Payment Processing Workflow:

  • When a user adds a membership or product to the cart and proceeds to checkout, the workflow is triggered.
  • The user inputs their payment details on a custom payment form created in FlutterFlow.
  • The submitted payment data is securely sent to Worldpay using the configured Worldpay API action.
  • Worldpay processes the transaction, and the response (success or failure) is sent back to the app.
  • Upon successful payment, a confirmation message is displayed to the user, and the purchased service or product is added to their account.

Post-Transaction Management:

  • The transaction details (e.g., payment amount, transaction ID, user information) are stored in a database for record-keeping and customer support purposes.
  • The user receives an automated email confirmation containing the transaction details and any relevant information about their purchase.

Monitoring and Analytics:

  • The integration enables real-time tracking of transactions within the app and in the Worldpay dashboard.
  • The startup can monitor payment success rates, track user purchase behaviors, and analyze sales data to inform business decisions.

Benefits:

  • Secure Payments: The integration ensures secure handling and processing of user payment information, adhering to industry standards.
  • Seamless User Experience: Users can easily make purchases within the app, promoting a frictionless checkout process and increasing conversion rates.
  • Efficient Management: All payment transactions are centrally managed, providing a single source of truth for financial records.
  • Data-Driven Insights: The startup can leverage payment data to gain insights into customer behaviors and preferences, helping to tailor marketing strategies and product offerings.

Conclusion:
By integrating FlutterFlow with Worldpay, the fitness startup can effectively manage e-commerce transactions within their app, providing a secure and seamless payment experience for their users, and driving growth through efficient payment processing and data insights.

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