Post::beforeSave PHP Method

    public function beforeSave()
    {
        $this->publish_time = strtotime($this->publish_time);
        $this->update_user_id = Yii::app()->user->getId();
        if ($this->getIsNewRecord()) {
            $this->create_user_id = $this->update_user_id;
            $this->create_user_ip = Yii::app()->getRequest()->userHostAddress;
        }
        $this->setTags($this->tags);
        return parent::beforeSave();
    }