Retrieving werkzeug route variable args inside a before_request?

Question

If you have variable arguments in your routes, like the "bar" here:

@app.route('/foo/<bar>')
def foo(self, bar):
    return bar

How can you retrieve that in a before_request, like here:

@app.before_request
def before_request():
    app.logger.info(???)

Answer 1

You can use request.view_args to get the path variables.

Also， you can replace @app.before_request with @app.url_value_preprocessor, like:

@app.url_value_preprocessor
def br(endpoint, values):
    print request.path
    print values

Hence, you can get path variables from values and get url path from request.path.