user_viewset.py 文件源码

def get_object(self):
        """Lookup a  username by pk else use lookup_field"""
        queryset = self.filter_queryset(self.get_queryset())

        lookup = self.kwargs.get(self.lookup_field)
        filter_kwargs = {self.lookup_field: lookup}

        try:
            pk = int(lookup)
        except ValueError:
            pass
        else:
            filter_kwargs = {'pk': pk}

        obj = get_object_or_404(queryset, **filter_kwargs)

        # May raise a permission denied
        self.check_object_permissions(self.request, obj)

        return obj