Yii2：行为上的模型规则继承

Question

我不知道是否还有其他方法可以得到这个：

用户模型.php

public function behaviors()
    {
        //I use array_merge() because UserModel extends from another custom model.
        return 
            array_merge(
                parent::behaviors(),
                [
                    MyBehavior::className(),
                ]
            );
    }

public function rules()
    {
        return 
            array_merge(
                MyBehavior::theRules(),
                [
                    list of UserModel rules... 
                ]
            );

MyBehavior.php

class MyBehavior extends Behavior
{

public static function theRules()
    {
    return [
            [['attr'],'file']
];
    }
  ....
}

我的问题是：是否有其他方法可以将规则从 MyBehavior 继承到 UserModel，而无需在 UserModel::rules() 上静态调用 MyBehavior::theRules() ？

Answer 1

用户模型.php

use yii\helpers\ArrayHelper;

public function behaviors()
    {
        //I use array_merge() because UserModel extends from another custom model.
        return ArrayHelper::merge(
                parent::behaviors(),
                [
                    MyBehavior::className(),
                ]
            );
    }

public function rules()
    {
        return 
                [
                    list of UserModel rules... 
                ]
            ;
}

摘自：https://github.com/yiisoft/yii2/issues/3772#issuecomment-45715176

MyBehavior.php

 use \yii\validators\Validator;
 public function attach($owner){
        parent::attach($owner);

        $owner->validators[] = Validator::createValidator('file', $this->owner, '_anexo' 
            ,['skipOnEmpty' => true, 'extensions' => 'png, jpg, jpeg', 'maxFiles' => 5, 'maxSize'=>2000000]
        );
    }