Item::beforeSave PHP Method

    public function beforeSave()
    {
        if (parent::beforeSave()) {
            if ($this->isNewRecord) {
                $this->create_time = $this->update_time = time();
            } else {
                $this->update_time = time();
            }
            return true;
        } else {
            return false;
        }
    }

 protected function beforeSave()
 {
     if (parent::beforeSave()) {
         if ($this->id < 0) {
             $this->code = preg_replace('/\\s+/', '', $this->name);
         }
     }
     return true;
 }