如何继承基于类的视图的DRF权限？

Question

class ViewTwo(APIView):
    permission_classes = (permissions.IsBar,)

class ViewThree(ViewTwo):
    permission_classes = (permissions.IsXYZ,)

How can ViewThree inherit ViewTwo permissions in order to have both permissions.IsBar and permissions.IsXYZ permission classes?

Answer 1

I suppose, you need to implement get_permissions method in ViewThree which instantiates and returns the list of permissions that this view requires:

class ViewThree(ViewTwo):
    def get_permissions(self):
        return super().get_permissions() + (permissions.IsXYZ,)

Answer 2

Simply define the permissions on ViewThree by appending those from ViewTwo.

class ViewTwo(TemplateView):
    permission_classes = (permissions.IsBar,)

class ViewThree(ViewTwo):
    permission_classes = ViewTwo.permission_classes + (permissions.IsXYZ,)