Create Invoice with Stripe API

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import os
import stripe
from fastapi import FastAPI, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from pydantic import BaseModel
import uvicorn

# Initialize Stripe API with the secret key
stripe.api_key = os.environ['STRIPE_SECRET_KEY']

app = FastAPI()

# CORS configuration to allow preflight requests with OPTIONS method
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # Allows all origins
    allow_credentials=True,
    allow_methods=["*"],  # Allows all methods
    allow_headers=["*"],  # Allows all headers
)

class InvoiceItemData(BaseModel):
    customer_email: str
    description: str
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Frequently Asked Questions

What are the main business benefits of using this Create Invoice with Stripe API template?

The Create Invoice with Stripe API template offers several key business benefits: - Streamlined invoice creation and management - Automatic customer profile creation in Stripe - Secure payment processing through Stripe's platform - Customizable invoice descriptions and amounts - Ability to track invoices using unique invoice IDs

This template simplifies the invoicing process, allowing businesses to focus on their core operations while ensuring efficient payment collection.

Can this template be used for subscription-based businesses?

While the Create Invoice with Stripe API template is primarily designed for one-time invoices, it can be adapted for subscription-based businesses. You would need to modify the backend to create recurring invoices using Stripe's subscription API. The template provides a solid foundation for integrating with Stripe, making it easier to extend its functionality for subscription management.

How does this template help with financial record-keeping?

The Create Invoice with Stripe API template assists with financial record-keeping in several ways: - It generates unique invoice IDs for each transaction - Customer information is stored in Stripe, linked to each invoice - Invoice details (description, amount) are recorded for each transaction - The template can be extended to store invoice data in a separate database for comprehensive record-keeping

These features help businesses maintain accurate financial records and simplify reconciliation processes.

How can I customize the invoice creation process in the backend?

You can customize the invoice creation process in the Create Invoice with Stripe API template by modifying the create_invoice function. For example, to add metadata to the invoice:

```python @app.post("/create-invoice") def create_invoice(item_data: InvoiceItemData): try: # ... existing code ...

       # Add metadata to the invoice
       invoice = stripe.Invoice.create(
           customer=customer.id,
           auto_advance=False,
           metadata={
               "order_id": "12345",
               "department": "Sales"
           }
       )

       # ... rest of the function ...

```

This example adds order ID and department information to the invoice metadata, which can be useful for internal tracking and reporting.

How can I handle errors and provide more detailed feedback to the user in the frontend?

To handle errors and provide more detailed feedback in the frontend of the Create Invoice with Stripe API template, you can modify the createInvoiceAndRedirect function. Here's an example:

```javascript async function createInvoiceAndRedirect(customerEmail, description, amount) { try { const response = await fetch('LAZY_BACKEND_URL/create-invoice', { method: 'POST', headers: { 'Content-Type': 'application/json', }, body: JSON.stringify({ customer_email: customerEmail, description: description, amount: amount }) });

   if (!response.ok) {
     const errorData = await response.json();
     throw new Error(errorData.detail || `HTTP error! status: ${response.status}`);
   }

   const data = await response.json();
   window.location.href = data.invoice_url;
 } catch (error) {
   console.error('Could not create invoice:', error);

   // Provide more detailed error feedback
   let errorMessage = 'An unexpected error occurred. Please try again.';
   if (error.message.includes('Invalid email address')) {
     errorMessage = 'Please provide a valid email address.';
   } else if (error.message.includes('Amount must be at least')) {
     errorMessage = 'The invoice amount is too low. Please increase the amount.';
   }

   alert(errorMessage);
 }

} ```

This modification provides more specific error messages to the user based on the error received from the backend, improving the user experience when issues arise during invoice creation.

Created: | Last Updated:

This app integrates with Stripe API to create and manage invoices. It provides a seamless experience for users to generate invoices and make payments. The backend handles the creation of Stripe customers and invoices, while the frontend includes a JavaScript function to post data to the backend and redirect users to the payment page. A valid Stripe API key is essential for the app's operation.

Introduction to the Create Invoice with Stripe API Template

Welcome to the Create Invoice with Stripe API template! This template is designed to help you seamlessly integrate Stripe's invoicing capabilities into your application. With this template, you can create and manage invoices, allowing users to generate payment requests and process payments with ease. The backend is set up to handle the creation of Stripe customers and invoices, while the frontend includes a JavaScript function to post data to the backend and redirect users to the payment page. Before you begin, ensure you have a valid Stripe API key, as it is essential for the app's operation.

Clicking Start with this Template

To get started with this template, click on the "Start with this Template" button. This will pre-populate the code in the Lazy Builder interface, so you won't need to copy, paste, or delete any code manually.

Initial Setup: Adding Environment Secrets

Before testing the app, you'll need to set up an environment secret for the Stripe API key:

  1. Log in to your Stripe account and navigate to the API section to find your secret key.
  2. In the Lazy Builder interface, go to the Environment Secrets tab.
  3. Create a new secret with the key STRIPE_SECRET_KEY and paste your Stripe secret key as the value.

Test: Pressing the Test Button

Once you have set up your environment secret, press the "Test" button. This will deploy the app and launch the Lazy CLI. The Lazy platform handles all deployment aspects, so you don't need to worry about installing libraries or setting up your environment.

Entering Input

After pressing the "Test" button, if the app requires any user input, the Lazy App's CLI interface will prompt you to provide the necessary information. Follow the instructions in the CLI to enter any required input.

Using the App

After deployment, Lazy will provide you with a dedicated server link to use the API. If you're using FastAPI, Lazy will also provide a link to the API documentation. You can use these links to interact with your app and test the endpoints.

Integrating the App

To integrate the backend with your frontend or another service, you can use the provided JavaScript snippet. Here's how to do it:

  1. Include the JavaScript function in your HTML/JS file.
  2. Replace LAZY_BACKEND_URL with the URL provided by Lazy after deployment.
  3. Call the createInvoiceAndRedirect function with the customer's email, invoice description, and amount to create an invoice and redirect the user to the payment page.

Here's the JavaScript snippet you can use:

<script><br>     async function createInvoiceAndRedirect(customerEmail, description, amount) {<br>       try {<br>         const response = await fetch('LAZY_BACKEND_URL/create-invoice', {<br>           method: 'POST',<br>           headers: {<br>             'Content-Type': 'application/json',<br>           },<br>           body: JSON.stringify({<br>             customer_email: customerEmail,<br>             description: description,<br>             amount: amount<br>           })<br>         });<br>         if (!response.ok) {<br>           throw new Error(HTTP error! status: ${response.status});<br>         }<br>         const data = await response.json();<br>         window.location.href = data.invoice_url;<br>       } catch (error) {<br>         console.error('Could not create invoice:', error);<br>         alert('Error creating invoice. Please try again.');<br>       }<br>     }<br>     // Example usage:<br>     // createInvoiceAndRedirect('customer@example.com', 'Product Description', 1000);<br>   </script> Remember to replace LAZY_BACKEND_URL with the actual backend URL provided by Lazy. This code snippet will make a POST request to the backend, create an invoice, and redirect the user to the Stripe payment page.

By following these steps, you should now have a fully functional invoice creation and payment processing application integrated with Stripe, all set up and ready to go on the Lazy platform.



Here are 5 key business benefits for this invoice creation template:

Template Benefits

  1. Streamlined Invoicing Process: This template automates the creation of invoices, saving businesses time and reducing manual errors in billing processes.

  2. Improved Cash Flow Management: By providing a quick and easy way to generate and send invoices, businesses can accelerate their payment collection, leading to better cash flow.

  3. Enhanced Customer Experience: The seamless integration with Stripe's hosted invoice pages offers customers a professional and user-friendly payment interface, potentially increasing payment conversion rates.

  4. Flexibility and Scalability: The template can be easily customized to handle various types of products or services, making it adaptable for different business models and scalable as the business grows.

  5. Reduced Development Time and Costs: By providing a ready-to-use solution for invoice creation and payment processing, this template significantly cuts down on development time and costs for businesses looking to implement online payment systems.

Technologies

Streamline Stripe Payments with Lazy AI Templates: Automate Billing, Invoices, Payments and More  Streamline Stripe Payments with Lazy AI Templates: Automate Billing, Invoices, Payments and More

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