public function actionAdd()
{
$user = User::model()->findByPk(Yii::app()->request->getParam('id'));
if ($user === null || $user->id === Yii::app()->getUser()->getId()) {
throw new CHttpException(404, Yii::t('application', 'The user you are trying to add as a contact is not available.'));
}
if (User::areContacts(Yii::app()->getUser()->getId(), $user->id)) {
throw new CException(401, Yii::t('application', 'You and {username} are already contacts.', array('{username}' => $user->username)));
}
$request = new Request();
$request->user_id = Yii::app()->user->getId();
$request->contact_id = $user->id;
if ($request->save()) {
$this->redirect($user->getUrl());
} else {
throw new CException(Yii::t('application', 'Write error message here'));
}
}
