Yii2ActiveRecord为属性设置默认值

/**
* 构造函数
* 
* @param array $config        
*/
public function __construct ($config = [])
{
$this->setAttribute('is_parent', 1);
$this->setAttribute('take_rate', 0);
$this->setAttribute('show_virtual', 0);
$this->setAttribute('cat_sort', 255);
parent::__construct($config);
}