How to reverse a url that is using DefaultRouter()?

Question

I'm trying to use reverse() inside my test. I tried this answer! but it's not working.
I still getting the error
django.urls.exceptions.NoReverseMatch: Reverse for 'patients-list' with no arguments not found.

router = DefaultRouter()
router.register(r'patients', views.PatientSet, base_name='patients')

urlpatterns = [
    url(r'^', include(router.urls)),
]

Here is the ModelViewSet

class PatientSet(viewsets.ModelViewSet):
    queryset = Patient.objects.all()
    serializer_class = PatientSerializer
    permission_classes = [IsDoctorUser]
    filter_backends = (filters.DjangoFilterBackend,)
    filter_fields = ['is_active']

I'm using this way inside my test url = reverse('patients-list')

Answer 1

Firstly, the base_name kwarg to routers is deprecated in favor of the basename kwarg in DRF 3.11, however this should not be what's causing issues. I can't actually see anything wrong with the code sample you've provided either.

What I would recommend is try installing the django-extensions package. After you have installed and configured django-extensions, you can use the python manage.py show_urls command to output a list of all your routes.

python manage.py show_urls

/api/accounts/users/ accounts.views.UserViewSet account:user-list
/api/accounts/users/<uuid>/ accounts.views.UserViewSet account:user-detail

Each line contains the url /api/accounts/users/<uuid>/, the view's path accounts.views.UserViewSet, and the name (this is what you want for reverse) of the route account:user-detail. With this I hope you will be able to find the correct name for your route. The URL portion also indicates any parameters required for that route.