Question 1

How do I add user authentication to a FastHTML app?

Accepted Answer

Reference the idiomatic app example in the GitHub repo, which includes custom authentication using Python libraries like bcrypt and sessions. Implement it within FastHTML routes for handling login and protected endpoints.

Question 2

FastHTML vs Flask: which one should I use?

Accepted Answer

FastHTML focuses on hypermedia-driven development with HTMX to minimize JavaScript, ideal for Python-centric interactive apps. Flask is a more traditional microframework offering flexibility for various front-end choices, including full JavaScript frameworks.

Question 3

Can FastHTML handle real-time updates like WebSockets?

Accepted Answer

FastHTML primarily uses HTMX for server-sent partials, which doesn't natively support WebSockets. For real-time features, you'd need to integrate additional Python WebSocket libraries and manage client-side JavaScript separately.

Question 4

How to deploy a FastHTML application to production?

Accepted Answer

Deploy it as a standard Python web app using WSGI/ASGI servers like Gunicorn or Uvicorn. Check the examples repo for deployment scripts, but expect to handle configuration manually due to limited pre-built guides.

Question 5

Is FastHTML suitable for large-scale enterprise applications?

Accepted Answer

While designed for scalability with minimal code, its newness means limited real-world testing in large enterprises. Assess community growth and stability before adopting for critical, high-traffic projects.

Question 6

How do I use databases with FastHTML?

Accepted Answer

Integrate any Python database library, such as SQLAlchemy or sqlite3, directly in your FastHTML route functions. The framework doesn't impose a specific ORM, allowing full use of Python's ecosystem for data persistence.

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