base_admin.py 文件源码

def _folder_form_delete(self, request, obj):
        if not self.has_delete_permission(request, obj):
            raise PermissionDenied

        using = router.db_for_write(obj.__class__)

        # Populate deleted_objects, a data structure of all related objects
        # that will also be deleted.
        (deleted_objects, model_count, perms_needed, protected) = get_deleted_objects(  # noqa
            [obj], obj._meta, request.user, self.admin_site, using)

        if protected or perms_needed:
            self.message_user(
                request,
                _('Cannot delete %(name)s') % {'name': obj._meta.verbose_name},
                messages.ERROR,
            )

        elif len(deleted_objects) > 1:
            self.message_user(
                request,
                _('Cannot delete %(name)s because of related objects (%(related)s)') % {  # noqa
                    'name': obj._meta.verbose_name,
                    'related': ', '.join(
                        '%s %s' % (count, name)
                        for name, count in model_count.items()
                    ),
                },
                messages.ERROR,
            )

        else:
            obj.delete()
            self.message_user(
                request,
                _('The folder "%s" was deleted successfully.') % obj,
                messages.SUCCESS)

        return self.redirect_to_folder(request, obj.parent_id)