admin.py 文件源码

def queryset(self, request, queryset):
        try:
            # #### MPTT ADDITION START
            if self.lookup_val:
                other_model = self.other_model.objects.get(pk=self.lookup_val)
                other_models = other_model.get_descendants(True)
                del self.used_parameters[self.changed_lookup_kwarg]
                self.used_parameters.update(
                    {'%s__%s__in' % (self.field_path, self.rel_name): other_models}
                )
            # #### MPTT ADDITION END
            return queryset.filter(**self.used_parameters)
        except ValidationError as e:
            raise IncorrectLookupParameters(e)

    # Adding padding_style to each choice tuple