Laravel验证：仅需要且仅一个字段

1 回答

• 5

  您可以为此编写自定义验证器：http://laravel.com/docs/5.0/validation#custom-validation-rules

  它可能看起来像这样：

  class CustomValidator extends Illuminate\Validation\Validator {
  
      public function validateEmpty($attribute, $value)
      {
          return ! $this->validateRequired($attribute, $value);
      }
  
      public function validateEmptyIf($attribute, $value, $parameters)
      {
          $key = $parameters[0];
  
          if ($this->validateRequired($key, $this->getValue($key))) {
              return $this->validateEmpty($attribute, $value);
          }
  
          return true;
      }
  }
  

  在服务提供商中注册：

  Validator::resolver(function($translator, $data, $rules, $messages, $attributes)
  {
      return new CustomValidator($translator, $data, $rules, $messages, $attributes);
  });
  

  使用它（例如，在表单请求中）：

  class StoreSomethingRequest extends FormRequest {
      // ...
  
      public function rules()
      {
          return [
              'percentage' => 'empty_if:number',
              'number'     => 'empty_if:percentage',
          ];
      }
  }
  

  Update 刚刚在修补匠中测试过：

  Validator::make(['foo' => 'foo', 'bar' => 'bar'], ['bar' => 'empty_if:foo'])->fails()
  => true
  Validator::make(['foo' => '', 'bar' => 'bar'], ['bar' => 'empty_if:foo'])->fails()
  => false
  Validator::make(['foo' => '', 'bar' => 'bar'], ['foo' => 'empty_if:bar'])->fails()
  => false
  

  回复于 2024-05-05T06:42:42+08:00