Post::publish PHP Method

    public function publish()
    {
        $transaction = Yii::app()->db->beginTransaction();
        try {
            $this->status = self::STATUS_PUBLISHED;
            $this->publish_time = date('d-m-Y h:i');
            if ($this->save()) {
                Yii::app()->eventManager->fire(BlogEvents::POST_PUBLISH, new PostPublishEvent($this, Yii::app()->getUser()));
            }
            $transaction->commit();
            return true;
        } catch (Exception $e) {
            $transaction->rollback();
            Yii::log($e->__toString(), CLogger::LEVEL_ERROR);
            return true;
        }
    }