how to use query_params in get_object djangorestframework

# generics.py
class GenericAPIView(APIView):
    ...
    def dispatch(self, request, *args, **kwargs):
        lookup_param = request.GET.get(self.lookup_field, None)
        if lookup_param:
            kwargs[lookup_field] = lookup_param
        return Super(GenericAPIView, self).dispatch(request, *args, **kwargs)
    ...