Edit incoming request body payloads in flask api

问题

Im looking to make my Flask based API case insensitive for all incoming payloads. rather than having to apply this to all api-route functions i want to apply this to the @app.before_request decorator, such that for all incoming requests with json payloads (POSTs and PUTs) I directly edit the payload before it is handled by the applicable app.route function.

POST {"x":1, "Y":2} Should be formatted to POST {"x":1, "y":2} for request endpoints, but I can't seem to make this happen.

@app.before_request
def before_request():
    if request.json:
        data = RecusivelyLowerKeys(request.get_json())
        request.data = json.dumps(ldata)

so far this approach hasn't worked and the original request payload seems static.

Any tips or alternative approaches would be appreciated thanks.

来源：https://stackoverflow.com/questions/44587404/edit-incoming-request-body-payloads-in-flask-api