使用注释和自定义属性时的验证顺序

Question

我注意到,在创建自定义验证属性时,我的验证仅在本机MVC数据注释触发后触发.有什么办法可以"同时"解雇吗？

为了表明我的意思,假装我有这样的形式:

FirstName: <FirstName Textbox>
LastName: <LastName TextBox>
Zip: <Zip TextBox>

所以我对所有3都有一个[Required]注释,但另外,对于Zip属性,我有一个自定义属性.如果用户没有输入名字或姓氏,但是输入了无效的Zip(我的属性应该验证这一点),那么所有三个都应该有一条错误消息 - 但是没有.firstName和lastName只有一个错误.

这是代码:

Person.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;

// My validator
using MvcApplication3.Extensions.Validation;

namespace MvcApplication3.Models
{
  public class Person
  {
    [Required(ErrorMessage="Field required!")]
    public string firstName{get;set;}

    [Required(ErrorMessage="Field required!")]
    public string lastName { get; set; }    

    [Zip(ErrorMessage="You gotta put in a valid zip code")]
    [Required(ErrorMessage="Field required!")]
    public string zipCode { get; set; }    
  }
}

控制器:

[HttpPost]
public ActionResult Index(FormCollection form, Person person)
{
  return View(person);
}  

视图:

@model MvcApplication3.Models.Person
@{
  ViewBag.Title = "Person";
  Layout = "~/Views/Shared/_Layout.cshtml";       

}
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>

<h2>
  Testing Form: @Model.firstName
</h2>
<hr />

@{Html.EnableClientValidation();}

@using (Html.BeginForm())
{ 
  @Html.LabelFor(model => model.firstName) 
  @Html.TextBoxFor(model => model.firstName) 
  @Html.ValidationMessageFor(model=>model.firstName)

  <br /><br />
  @Html.LabelFor(model => model.lastName) 
  @Html.TextBoxFor(model => model.lastName) 
  @Html.ValidationMessageFor(model=>model.lastName)

  <br /><br />
  @Html.LabelFor(model => model.zipCode) 
  @Html.TextBoxFor(model => model.zipCode) 
  @Html.ValidationMessageFor(model=>model.zipCode)    

  <br /><br />
  <input type="submit" value="Submit" />
}

Zip Validator(Zip.cs):

  public class ZipAttribute : ValidationAttribute
  {
    public override bool IsValid(object value)
    {
      bool foundMatch = false;
      try
      {
        foundMatch = Regex.IsMatch(value.ToString(), "\\A\\b[0-9]{5}(?:-[0-9]{4})?\\b\\z");
      }
      catch (ArgumentException ex)
      {
        // Syntax error in the regular expression
      }
      return foundMatch;
    }
  }

此外,我知道我可以使用Regexp数据注释来做到这一点,但我希望将来推出自己的自定义验证器.

谢谢!

Answer 1

您需要添加将在客户端运行的验证的 Javascript 版本（或禁用客户端验证，但这有点无聊）。

这里有一个为电子邮件地址构建自定义验证的示例：

http://thepursuitofalife.com/asp-net-mvc-3-unobtrusive-javascript-validation-with-custom-validators/

这显示了 C# 代码（其中包括设置将执行客户端验证的 javascript 函数名称）以及 javascript“validemail”例程。

public class ValidEmailAttribute : ValidationAttribute, IClientValidatable
{
    // ...

    public IEnumerable GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        yield return new ModelClientValidationRule
        {
            ErrorMessage = FormatErrorMessage(metadata.DisplayName),
            ValidationType = "validemail"
        };
    }
}

还有JS：

$(function() {
    jQuery.validator.addMethod("validemail", function (value, element, param) {
        var emailPattern = /^[a-zA-Z0-9._-]+@@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
        return emailPattern.test(value);
    });
    jQuery.validator.unobtrusive.adapters.addBool("validemail");
});