user_profile_viewset.py 文件源码

def get_object(self, queryset=None):
        """Lookup user profile by pk or username"""
        if self.kwargs.get(self.lookup_field, None) is None:
            raise ParseError(
                'Expected URL keyword argument `%s`.' % self.lookup_field
            )
        if queryset is None:
            queryset = self.filter_queryset(self.get_queryset())

        serializer = self.get_serializer()
        lookup_field = self.lookup_field

        if self.lookup_field in serializer.get_fields():
            k = serializer.get_fields()[self.lookup_field]
            if isinstance(k, serializers.HyperlinkedRelatedField):
                lookup_field = '%s__%s' % (self.lookup_field, k.lookup_field)

        lookup = self.kwargs[self.lookup_field]
        filter_kwargs = {lookup_field: lookup}

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

        obj = get_object_or_404(queryset, **filter_kwargs)

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

        return obj