CODEWITHSUNDEEP
pythonflask
saschwarz
saschwarz

Reputation: 1237

How to access the current response's status_code in Flask's teardown_request?

I'm interfacing with an internal logging system and I'd like to obtain the current response's status_code from within Flask's teardown_request callback: http://flask.pocoo.org/docs/0.11/api/#flask.Flask.teardown_request. I like that it is guaranteed to be called and I can get all the other information needed for my purposes.

I can access the current response and it's status_code if I connect to the request_finished signal:

def request_finished_listener(sender, response):
    print(response.status_code)

request_finished.connect(request_finished_listener)

But I'd like to do all my data collection within the teardown_request if possible.

Upvotes: 3

Views: 1328

Answers (1)

davidism
davidism

Reputation: 127190

You can't. teardown_request is called as cleanup after the response is generated, it does not have access to the response. You should use the request_finished signal or after_request decorator if you need access to the response from within Flask. teardown_request is only intended for cleaning up resources.

If you need to log something about the response and absolutely don't want to use request_finished or after_request, you'll have to wrap the Flask app in WSGI middleware.

Upvotes: 3

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