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！
解决方法
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,但这有点不对劲).
http://thepursuitofalife.com/asp-net-mvc-3-unobtrusive-javascript-validation-with-custom-validators/
这显示了C#代码(包括设置将进行客户端验证的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"
};
}
}
和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");
});
