I'm trying to authenticate a user with an Authorization header containing a token generated by django-rest-knox. I also have two other authentication backends. To do this, I call the authenticate() method defined in knox.auth. However, it returns this error and fails to authenticate the user: WrappedAttributeError at /login/
'TokenAuthentication' object has no attribute 'get_user'
It gets fixed if I define a get_user() method for a class that inherits from TokenAuthentication and use that class instead. Is there something I can fix so that I don't have to implement that or find out what middleware is triggering this function call?
views.py
from django.contrib.auth.models import User
from rest_framework.response import Response
from knox.views import LoginView as KnoxLoginView
from knox.auth import TokenAuthentication
class GetAuthToken(KnoxLoginView):
permission_classes = [AllowAny]
def post(self, request,*args, **kwargs):
user = TokenAuthentication().authenticate(request=request)
if user:
return Response(status=200)
else:
requestToken = request.data.get('requestToken')
if not requestToken:
return Response({'result': 'error'})
user = User.objects.all().first()
if user is None:
return super().post(request, format=None)
else:
login(request, user, backend='knox.auth.TokenAuthentication')
return super().post(request, format=None)
return super().post(request, format=None)
settings.py
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'rest_framework',
'adminutil',
'advisory',
'knox',
]
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
AUTHENTICATION_BACKENDS = [
'django.contrib.auth.backends.ModelBackend',
'knox.auth.TokenAuthentication',
'rest_framework.authentication.SessionAuthentication'
]
REST_FRAMEWORK = {
'DEFAULT_AUTHENTICATION_CLASSES' : [
'knox.auth.TokenAuthentication',
'rest_framework.authentication.SessionAuthentication'
]
}
These are the server logs:
[01/Oct/2019 16:33:58] "POST /login/ HTTP/1.1" 200 160
Internal Server Error: /login/
Traceback (most recent call last):
File "/home/shaily/.local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/home/shaily/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/shaily/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/shaily/.local/lib/python3.6/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
return view_func(*args, **kwargs)
File "/home/shaily/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 71, in view
return self.dispatch(request, *args, **kwargs)
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/views.py", line 505, in dispatch
response = self.handle_exception(exc)
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/views.py", line 465, in handle_exception
self.raise_uncaught_exception(exc)
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/views.py", line 476, in raise_uncaught_exception
raise exc
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/views.py", line 493, in dispatch
self.initial(request, *args, **kwargs)
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/views.py", line 410, in initial
self.perform_authentication(request)
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/views.py", line 324, in perform_authentication
request.user
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/request.py", line 220, in user
self._authenticate()
File "/usr/lib/python3.6/contextlib.py", line 99, in __exit__
self.gen.throw(type, value, traceback)
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/request.py", line 78, in wrap_attributeerrors
raise exc.with_traceback(info[2])
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/request.py", line 74, in wrap_attributeerrors
yield
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/request.py", line 220, in user
self._authenticate()
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/request.py", line 373, in _authenticate
user_auth_tuple = authenticator.authenticate(self)
File "/home/shaily/.local/lib/python3.6/site-packages/rest_framework/authentication.py", line 123, in authenticate
if not user or not user.is_active:
File "/home/shaily/.local/lib/python3.6/site-packages/django/utils/functional.py", line 256, in inner
self._setup()
File "/home/shaily/.local/lib/python3.6/site-packages/django/utils/functional.py", line 392, in _setup
self._wrapped = self._setupfunc()
File "/home/shaily/.local/lib/python3.6/site-packages/django/contrib/auth/middleware.py", line 24, in <lambda>
request.user = SimpleLazyObject(lambda: get_user(request))
File "/home/shaily/.local/lib/python3.6/site-packages/django/contrib/auth/middleware.py", line 12, in get_user
request._cached_user = auth.get_user(request)
File "/home/shaily/.local/lib/python3.6/site-packages/django/contrib/auth/__init__.py", line 189, in get_user
user = backend.get_user(user_id)
rest_framework.request.WrappedAttributeError: 'TokenAuthentication' object has no attribute 'get_user' ```
