serve/app/admin/command/Crud/stubs/mixins/modeAfterInsert.stub

    protected static function onAfterInsert($model)
    {
        if ($model->weigh == 0) {
            $pk = $model->getPk();
            $model->where($pk, $model[$pk])->update(['{%order%}' => $model[$pk]]);
        }
    }