- Configure Python logging at INFO level.
- Log key events: database initialization, incoming requests, validation errors, and successful guest submissions.
- Log the number of guest entries displayed when rendering the page.
This improves observability and helps with troubleshooting.
- Validate that first_name, last_name, email, and location are provided
- Add regex-based email format validation in app.py
- Display error messages on the guestbook form if validation fails
These changes help ensure that only properly formatted data is stored.
