How to access request context in Flask after_request?

Question

So, there are 3 concepts:

Application Context - stored in g
Session Context - stored in session (stores data across requests, may use cookies)
Request Context - ???

Couldn't find in Flask's docs.

I also looked in the guide: https://pythonise.com/feed/flask/python-before-after-request - they seem to confuse request context with session context.

My code (its pattern):

def handle_path1(event, request_context):
    return gen_response(event, request_context)

app = Flask(__name__)
app.add_url_rule('/path1', '/path1', handle_path1)

@app.after_request
def after_request_response_audit(response):
    request_context = ???SOMEHOW_GET_REQUEST_CONTEXT???()
    logging.info('%s %s' % (
        request_context['response_measure1'], 
        request_context['response_measure2']
    ))

@app.after_request
def after_request_response_measure2(response):
    request_context = ???SOMEHOW_GET_REQUEST_CONTEXT???()
    request_context['response_measure2'] = measure_response2(response)

@app.after_request
def after_request_response_measure1(response):
    request_context = ???SOMEHOW_GET_REQUEST_CONTEXT???()
    request_context['response_measure1'] = measure_response1(response)

The question is how to do ???SOMEHOW_GET_REQUEST_CONTEXT???().

You can just use the Flask request module ```from flask import request``` and then access it with something like ```request.data``` — Kevin Müller, Oct 18 '19 at 06:56
@KevinMüller this seems hackish, as according to docs `request.data` may contain incoming data. — Andrey.S, Oct 18 '19 at 07:12

score 2 · Answer 1 · edited Oct 13 '22 at 17:52

2

Try this! It is thread safe

from flask import request
@app.after_request
def after_request_response_measure1(response):
    request_context = request # Not needed
    request_context['response_measure1'] = measure_response1(response)

edited Oct 13 '22 at 17:52

Tim Ludwinski

2,704
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34

answered Oct 18 '19 at 06:59

ChickenSoups

937
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18

the `SOMEHOW_GET_REQUEST_CONTEXT` is unknown here – Andrey.S Oct 18 '19 at 07:08
The **SOMEHOE_GET_REQUEST_CONTEXT** is your any function, I mean all request context is in **request** itself. – ChickenSoups Oct 18 '19 at 07:13
You can find all properties of **request** [here](https://flask.palletsprojects.com/en/1.1.x/api/#flask.Request) – ChickenSoups Oct 18 '19 at 07:15
in which field of **request** can I store custom handling-scoped data? – Andrey.S Oct 18 '19 at 07:30
I updated the example above to make it clear that `SOMEHOW_GET_REQUEST_CONTEXT` isn't needed. I think he was trying to say that you can still use `flask.request` even in an `@app.after_request` function. – Tim Ludwinski Oct 13 '22 at 17:53

How to access request context in Flask after_request?

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