how to pass GET parameters with Flask using add_url

beginner's question: is it possible to pass GET request parameters to a route function in Flask using add_url_rule?

I am getting the error message that the verify_username_route function I declare later (that takes 1 parameter) is called without any parameters passed.

self.application_.add_url_rule(self.path_   '/verify', 'verify', self.verify_username_route, methods=['GET'])

CodePudding user response：

To fetch query string parameters, you use request.args.get('argname') in your function. Nothing is passed in -- it's all done through the globals.

CodePudding user response：

To pass any parameters in your URLs, you can use Flask's built-in patterns. These work for both @app.route decorators and add_url_route methods. Here is your code, with a parameter:

self.application_.add_url_rule(self.path_   '/verify/<int:val>', 'verify', self.verify_username_route, methods=['GET'])

The important part from this is the exact route: /verify/<int:parameter>. This tells Flask that you want the route to be in the format of /verify/something, where something is any integer. Whatever integer is entered here when the request is made gets passed to your self.verify_username_route as a parameter called val.