public function findByModel($modelName, $id)
{
$model_type_id = \GO::getModel($modelName)->modelTypeId();
return $this->find(\GO\Base\Db\FindParams::newInstance()->criteria(\GO\Base\Db\FindCriteria::newInstance()->addModel(Reminder::model())->addCondition('model_type_id', $model_type_id)->addCondition('model_id', $id)));
}
