public function actionAdd()
{
$model = new Relation();
if (($data = Yii::app()->getRequest()->getPost('Relation')) !== null) {
$model->setAttributes($data);
if ($model->validate()) {
if ($model->addRelation()) {
$this->send(ERROR_NONE, 'success');
}
} else {
$this->error->capture($model);
}
}
$this->render('add', array('relation' => $model));
}