API Root doesn't have has_permissions with JWT_Authentication - django

Question

Trying to implement djangorestframework_simplejwt in accordance with DRF. After implementing everything based on: https://simpleisbetterthancomplex.com/tutorial/2018/12/19/how-to-use-jwt-authentication-with-django-rest-framework.html and when I'm logged in on localhost:8000, the API Root view is unavailable and the error is an attribute error.
'JWTAuthentication' object has no attribute 'has_permission'
When I view the ModelViewSets themselves, they appear perfectly fine. It's just the API Root itself. When I logout and try to access the API Root, the page loads perfectly fine returning HTTP 403.
Am I not supposed to access the API root when logged in or is there a loophole that I can implement (or extend) in views.py?
Edit:
Internal Server Error: /api/
Traceback (most recent call last):
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\django\core\handlers\exception.py", line 3
4, in inner
response = get_response(request)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\django\core\handlers\base.py", line 115, i
n _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\django\core\handlers\base.py", line 113, i
n _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\django\views\decorators\csrf.py", line 54,
in wrapped_view
return view_func(*args, **kwargs)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\django\views\generic\base.py", line 71, in
view
return self.dispatch(request, *args, **kwargs)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\rest_framework\views.py", line 495, in dis
patch
response = self.handle_exception(exc)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\rest_framework\views.py", line 455, in han
dle_exception
self.raise_uncaught_exception(exc)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\rest_framework\views.py", line 483, in dis
patch
self.initial(request, *args, **kwargs)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\rest_framework\views.py", line 401, in ini
tial
self.check_permissions(request)
File "C:\Users\yoom\Code\test\qrveltest\venv\lib\site-packages\rest_framework\views.py", line 334, in che
ck_permissions
if not permission.has_permission(request, self):
AttributeError: 'JWTAuthentication' object has no attribute 'has_permission'
[19/Jun/2019 14:52:38] "GET /api/ HTTP/1.1" 500 95529
Here's the views.py:
from django.views.generic import ListView
from rest_framework import viewsets
from .serializers import *
from django_filters import rest_framework as filters
from rest_framework.permissions import IsAuthenticated
class HomePageView(ListView):
model = Test
template_name = 'home.html'
class UserViewSet(viewsets.ModelViewSet):
permission_classes = (IsAuthenticated, )
queryset = User.objects.all()
serializer_class = UserSerializer
filter_backends = (filters.DjangoFilterBackend,)
filterset_fields = ('username', 'email')
class TestViewSet(viewsets.ModelViewSet):
permission_classes = (IsAuthenticated, )
queryset = Test.objects.all()
serializer_class = TestSerializer
filter_backends = (filters.DjangoFilterBackend,)
filterset_fields = ('id', 'author')
def get_queryset(self):
queryset = Test.objects.all()
username = self.request.user
if username is not None:
queryset = queryset.filter(author__username=username)
return queryset
and urls.py:
from django.urls import path, include
from rest_framework import routers
from .views import *
from rest_framework_simplejwt import views as jwt_views
router = routers.DefaultRouter()
router.register('users', UserViewSet)
router.register('test', TestViewSet)
urlpatterns = [
path('', HomePageView.as_view(), name='home'),
path('api/', include(router.urls)),
path('api/token/', jwt_views.TokenObtainPairView.as_view(), name='token_obtain_pair'),
path('api/token/refresh/', jwt_views.TokenRefreshView.as_view(), name='token_refresh'),
]

Answer 1

I had the same issue and solved thanks for the comments. If anyone else is having this issue I'll write it here for you. Most likely an error in your settings be sure to add JWT under Authentication default and not Permission e.g.:
REST_FRAMEWORK = {
'DEFAULT_PERMISSION_CLASSES': [
'rest_framework.permissions.IsAuthenticated',
],
'DEFAULT_AUTHENTICATION_CLASSES': (
'rest_framework_simplejwt.authentication.JWTAuthentication',
)
}