base_name argument not specified, and could not automatically determine the name from the viewset, as it does not have a .queryset attribute

The problem is this: I'm trying to replace the standard queryset:

queryset: MyModel.objects.all()

on my:

def get_queryset(self, username=None):
    if username is not None:
        user = UserModel.objects.get(username=username)
        queryset = MyModel.filter(author=user)
        return queryset
    else:
        queryset = MyModel.objects.all()
        return queryset
     

when I remove the "queryset", and leave only "get_queryset", an error appears:

> AssertionError: base_name argument not specified, and could not automatically determine the name from the viewset, as it does not have a .queryset attribute.

All together looks so:

class MyModelView(viewsets.ModelViewSet):

permissions_classes = (permissions.IsAuthenticated,)
serializer_class = MyModelleSerializer

def get_queryset(self, username=None):
    if username is not None:
        user = UserModel.objects.get(username=username)
        queryset = MyModel.filter(author=user)
        return queryset
    else:
        queryset = MyModel.objects.all()
        return queryset
    
lookup_field = 'username'
lookup_value_regex = '[a-zA-Z0-9$&(._)\-]+'

so How to override method correctly?

In the latest DRF, you need to explicitly set base_name in your viewset url if you don't have queryset defined.

So, something like this should do good:

router.register(r'my-model/', MyModelView, basename='MyModel')

See this: docs Hope it helps.

You must add an argument called basename for the register method in the url.py file, Like the following code in url.py :

"In url.py"
    
    
...
    
from rest_framework import routers
       
router = routers.DefaultRouter()
router.register(r'my-model/' , MyModelView , basename='MyModel')  
urlpattern=[...]     

You need to set basename attribute in your url conf. Docs here

in my case i'm using rest framework Default router and changing view name to exact match with model name solved the problem.

View:

class DailyQuote(ModelViewSet):
   queryset = DailyQuote.objects.all()
   serializer_class = DailyQuoteSerializer

Model:

class DailyQuote(models.Model):
   quote = models.TextField()
   text = models.TextField()

so just change MyModelView to Model.