ClientResponse.json() should support support object_hook callback

[raees-khan]

Adding support for object_hook callback in json method of ClientResponse object should be considered (i.e. response.json(object_hook=mycallback)).

EDIT:
Basically what I am asking is that the json method should allow us to pass any optional arguments that the JSONDecoder accepts.

[aio-libs-bot]

GitMate.io thinks the contributor most likely able to help you is @asvetlov.

Possibly related issues are #976 (Fix websocket json support), #1670 (ClientResponse ergonomics), #1185 (Support HPKP), #1760 (support for ujson as json parser), and #17 (oauthlib support).

[asvetlov]

Please use await response.json(loads=JSONDecoder(object_hook=mycallback).decode)
loads is a callback that accepts a string and returns decoded python object.
Any implementation can be used, e.g. ujson or rapidjson. Not all alternatives have JSONDecoder class which accepts object_hook parameter.