Sometimes, we want to add optional URL parameters with Python Flask
In this article, we’ll look at how to add optional URL parameters with Python Flask.
How to add optional URL parameters with Python Flask?
To add optional URL parameters with Python Flask, we can set the default value for URL parameters.
For instance, we write
@user.route('/<user_id>', defaults={'username': None})
@user.route('/<user_id>/<username>')
def show(user_id, username):
pass
to add the routes that map to the show view.
We call the user.route decorator with the route patterns that have the username parameter and without.
And when we call route with a URL without the username parameter, we set username to None as the default value.
Conclusion
To add optional URL parameters with Python Flask, we can set the default value for URL parameters.
