class PreferenceViewSet(viewsets.ViewSet):
    queryset = Preference.objects.all()
    serializer_class = PreferenceSerializer

    def get_permissions(self):
        if self.action == 'create' or self.action == 'destroy':
            permission_classes = [IsAuthenticated]
        else:
            permission_classes = [IsAdminUser]
        return [permission() for permission in permission_classes]

    def list(self, request):
        queryset = Preference.objects.all()
        serializer = PreferenceSerializer(queryset, many=True)
        return Response(serializer.data)

    def create(self, request):
        queryset = Preference.objects.all()
        serializer = PreferenceSerializer(queryset, many=True)
        return Response(serializer.data)

path('preferences/<str:namespace>/<str:path>', preference_path, name='preference-path'),