Detailed explanation of how Yii2 implements a custom independent validator

How to implement a custom independent validator in Yii2? This article mainly introduces the method of Yii2 to implement a custom independent validator, and analyzes the implementation and use of Yii2's custom independent validator in the form of examples. Friends in need can refer to it. I hope it will be helpful to everyone.

The example in this article describes the method of implementing a custom independent validator in Yii2. Share it with everyone for your reference, the details are as follows:

Create a new file:

<?php
namespace common\helps;
use yii\validators\Validator;
class ArrayValidator extends Validator
{
  public function validateAttribute($model, $attribute)
  {
    if (!is_array($model->$attribute)) {
      $this->addError($model, $attribute, $attribute . &#39;必须是一个数组&#39;);
    }
  }
}

When using:

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

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