python - Not able to decode slack's response to my request URL on button press, ValueError in json.loads -


i working slack's api , sent message user 

{ "text": "would play game?", "attachments": [     {         "text": "choose game play",         "fallback": "you unable choose game",         "callback_id": "wopr_game",         "color": "#3aa3e3",         "attachment_type": "default",         "actions": [             {                 "name": "game",                 "text": "chess",                 "type": "button",                 "value": "chess"             },             {                 "name": "game",                 "text": "falken's maze",                 "type": "button",                 "value": "maze"             },             {                 "name": "game",                 "text": "thermonuclear war",                 "style": "danger",                 "type": "button",                 "value": "war",                 "confirm": {                     "title": "are sure?",                     "text": "wouldn't prefer game of chess?",                     "ok_text": "yes",                     "dismiss_text": "no"                 }             }         ]     } ] }

and when button pressed user, slack sent request python backend. trying read this:

json.loads(self.request.body.decode('utf-8'))

but error coming. here traceback(updated):

traceback (most recent call last): file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/core/handlers/exception.py", line 39, in inner   response = get_response(request) file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response   response = self._get_response(request) file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/core/handlers/base.py", line 187, in _get_response   response = self.process_exception_by_middleware(e, request) file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/core/handlers/base.py", line 185, in _get_response   response = wrapped_callback(request, *callback_args, **callback_kwargs) file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/views/generic/base.py", line 68, in view   return self.dispatch(request, *args, **kwargs) file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/utils/decorators.py", line 67, in _wrapper   return bound_func(*args, **kwargs) file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view   return view_func(*args, **kwargs) file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/utils/decorators.py", line 63, in bound_func   return func.__get__(self, type(self))(*args2, **kwargs2) file "/users/akash/dropbox/work/miral/eb_miral/botlogic/listeners/slack.py", line 50, in dispatch   return generic.view.dispatch(self, request, *args, **kwargs) file "/users/akash/virtualenvs/miral_env/lib/python3.4/site-packages/django/views/generic/base.py", line 88, in dispatch   return handler(request, *args, **kwargs) file "/users/akash/dropbox/work/miral/eb_miral/botlogic/listeners/slack.py", line 58, in post   incoming = json.loads(self.request.body.decode('utf-8')) file "/library/frameworks/python.framework/versions/3.4/lib/python3.4/json/__init__.py", line 318, in loads   return _default_decoder.decode(s) file "/library/frameworks/python.framework/versions/3.4/lib/python3.4/json/decoder.py", line 343, in decode   obj, end = self.raw_decode(s, idx=_w(s, 0).end()) file "/library/frameworks/python.framework/versions/3.4/lib/python3.4/json/decoder.py", line 361, in raw_decode   raise valueerror(errmsg("expecting value", s, err.value)) none valueerror: expecting value: line 1 column 1 (char 0)

i not able understand went wrong in this? works in case when user sends normal messages not in case of button press.

update: using django , if this:

payload = request.post.get('payload', none) incoming = json.loads(payload)

then works. miss out on important 'keys' other 'payload' slack must have returned , not generic solution. handling incoming requests in same server whether have 'payload' or not.


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