Yii2实现自定义独立验证器的方法

<?php
/
  author   : forecho <caizhenghai@gmail.>
  createTime : 2015/7/1 14:54
  description:
 /
namespace mon\helps;
use yii\validators\Validator;
class ArrayValidator extends Validator
{
  public function validateAttribute($model, $attribute)
  {
    if (!is_array($model->$attribute)) {
      $this->addError($model, $attribute, $attribute . '必须是一个数组');
    }
  }
}

public function rules()
{
  return [
    ...
    ['kind_ids', 'mon\helps\ArrayValidator'], // 自定义验证
    ...
  ];
}