A Flask-based invoice generator leveraging WeasyPrint, featuring a customizable invoice template. This system dynamically generates invoices using Jinja, simplifying the process of crafting polished and professional invoices.
Make sure you have the following dependencies installed:
- Python (3.11.4)
- Flask (3.0.0)
- WeasyPrint (60.1)
To run the application, execute the following command in the terminal:
python yourapp.py
Please note that running the application on Chrome directly may not be effective. Clients are required to send data in the form of JSON using the header:
if request.headers.get("Content-Type") == "application/json":
This ensures that the server processes the incoming data correctly.
- Open Postman.
- Set the request type to
POST
. - Enter the URL:
http://localhost:5000/
(or the appropriate URL for your Flask application). - In the Headers section, add a new header:
- Key:
Content-Type
- Value:
application/json
- Key:
- In the Body section:
- Select the "raw" option.
- Choose
JSON (application/json)
as the type. - Enter your JSON data in the request body. For example:
{ "duedate": "November 7, 2023", "other_key": "other_value", "another_key": "another_value", ... }
- Click the "Send" button to make the POST request.
Ensure that your Flask application is running and listening on http://localhost:5000/
. The data structure in the JSON body should match what Flask application expects.
Invoice Numbering:
- Implement an automatic invoice numbering system to assign unique numbers to each generated invoice.
Discounts and Coupons:
- Provide the ability to apply discounts or coupons to invoices, both as a percentage and fixed amount.
Multiple Currency Support:
- Allow users to select and display invoices in different currencies, with automatic currency conversion.
Payment Status Tracking:
- Implement a system to track and display the payment status of each invoice (paid, pending, overdue).
Email Integration:
- Enable users to send invoices directly to clients via email and include an option to attach the PDF invoice.
Due Date and Late Fee: - Allow users to set due dates for invoices and implement automatic late fee calculation for overdue payments.
Integration with Payment Gateways: - Integrate popular payment gateways to facilitate online payments directly from the invoice.
Offline Mode: - Implement a feature that allows users to generate invoices and access basic functionality even when offline, with data synchronization once online.
Attachment Support: - Allow users to attach additional files or documents to the invoice, such as contracts, receipts, or supporting documents.
User Roles and Permissions: - Implement role-based access control to restrict certain functionalities based on user roles (admin, staff, client).
Notification System: - Set up a notification system to alert users about upcoming due dates, overdue payments, or other important events.