本文体验范围验证。与本文相关的包括:
MVC验证01-基础、远程验证
MVC验证02-自定义验证规则、邮件验证
MVC验证03-自定义验证规则、禁止输入某些值
当需要对字符串长度进行验证,可以用StringLength:
[StringLength(100, ErrorMessage = "{0}
必须至少包含 {2} 个字符。", MinimumLength = 6)]
当需要对数组范围进行验证,可以用Range:
[Range(0,5)]
如果需要对日期范围进行验证呢?
假设来验证日期,以当前日期为基准,介于当前日期和第七天之间的日期为有效,其它无效。
自定义验证特性,继承 ValidationAttribute 并实现IClientValidatable
重写基类ValidationAttribute的IsValid()方法,是为了服务端验证用的。
实现IClientValidatable接口方法,是为了在前端html元素增加某个属性,好让jquery侦测到。
展开using System;
using System.ComponentModel.DataAnnotations;
using System.Web.Mvc;
namespace MvcValidation.Extension
{
public class DayRangeAttribute : ValidationAttribute, IClientValidatable
{
private int _minDay;
private int _maxDay;
public DayRangeAttribute(int minDay, int maxDay)
{
if (minDay.CompareTo(maxDay) > -1)
{
throw new Exception("最小日期不能大于或等于最大日期");
}
this._minDay = minDay;
this._maxDay = maxDay;
}
public override bool IsValid(object value)
{
if (value == null)
return true;
var compareDate = value as DateTime?;
if (compareDate.HasValue)
{
compareDate = compareDate.Value.Date;
return compareDate.Value >= DateTime.Today.AddDays(_minDay).Date &&
compareDate.Value <= DateTime.Today.AddDays(_maxDay).Date;
}
return false;
}
public System.Collections.Generic.IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
var rule = new ModelClientValidationRule
{
ValidationType = "dayrange", //这里的dayrange最终会成为data-val-dayrange属性被jquery侦测到
ErrorMessage = FormatErrorMessage(metadata.GetDisplayName())
};
//这里了的min和max将会作为jquery验证扩展方法的参数
rule.ValidationParameters["min"] = _minDay;
rule.ValidationParameters["max"] = _maxDay;
yield return rule;
}
}
}
注意:
■ ValidationType =
"dayrange"中的dayrange必须小写,否则报错。
■ ValidationType =
"dayrange"最终成为html元素的一个属性data-val-dayrange,从而能被jquery侦测辨别。
■
rule.ValidationParameters["min"]和rule.ValidationParameters["max"],min和max将作为参数供jquery扩展方法使用,当然也必须是小写。
把自定义验证特性打到View model上
[DayRange(0, 7)]验证当天到第七天之内的日期。
展开 public class RegisterModel
{
[Required]
[StringLength(6, MinimumLength = 2)] //加
[Display(Name = "用户名")]
//[Remote("CheckUserName","Validate", ErrorMessage = "远程验证用户名失败")]
[NoInput("demo,jack",ErrorMessage = "不能使用此名称")]
public string UserName { get; set; }
[Required]
[DataType(DataType.EmailAddress)]
[Display(Name = "邮件")]
//[Email]
public string Email { get; set; }
[DayRange(0, 7)]
[Display(Name = "上课时间")]
public DateTime ClassDate { get; set; }
[Required]
[StringLength(100, ErrorMessage = "{0}栏位最少{2}个字,最多{1}个字", MinimumLength = 6)]
[DataType(DataType.Password)]
[Display(Name = "密码")]
public string Password { get; set; }
[DataType(DataType.Password)]
[Display(Name = "确认密码")]
[System.ComponentModel.DataAnnotations.Compare("Password", ErrorMessage = "密码和确认密码不匹配。")]
public string ConfirmPassword { get; set; }
扩展jquery验证jQuery.validator.dayrange.js
//扩展jquery验证方法
//第一个参数是前端输入的值
//第二个参数是html元素
//第三个参数是自定义验证特性DayRangeArribute中rule.ValidationParameters["min"]和rule.ValidationParameters["max"]的键值
jQuery.validator.addMethod(‘dayrange‘, function(value, element, param) {
if (!value) {
return false;
}
//value:1999/1/1
var valueDateParts = value.split(‘-‘);
var minDate = new Date();
var maxDate = new Date();
var now = new Date();
var dateValue = new Date(valueDateParts[2],
(valueDateParts[1] - 1),
valueDateParts[0],
now.getHours(),
now.getMinutes(),
(now.getSeconds() + 5));
minDate.setDate(minDate.getDate() - parseInt(param.min));
maxDate.setDate(maxDate.getDate() + parseInt(param.max));
return dateValue >= minDate && dateValue <= maxDate;
});
//第一个参数是jquery验证扩展方法名
//第二和第三个参数分别是最小或最大值
//第三个参数为DayRangeAttribute中ValidationType对应的值
jQuery.validator.unobtrusive.adapters.addMinMax(‘dayrange‘, ‘min‘, ‘max‘, ‘dayrange‘);
Register.cshtml视图
展开@model MvcValidation.Models.RegisterModel
@{
ViewBag.Title = "注册";
}
<hgroup class="title">
<h1>@ViewBag.Title.</h1>
<h2>创建新帐户。</h2>
</hgroup>
@using (Html.BeginForm()) {
@Html.AntiForgeryToken()
@Html.ValidationSummary()
<fieldset>
<legend>注册表单</legend>
<ol>
<li>
@Html.LabelFor(m => m.UserName)
@Html.TextBoxFor(m => m.UserName)
</li>
<li>
@Html.LabelFor(m => m.Email)
@Html.TextBoxFor(m => m.Email)
</li>
<li>
@Html.LabelFor(m => m.ClassDate)
@Html.TextBoxFor(m => m.ClassDate)
</li>
<li>
@Html.LabelFor(m => m.Password)
@Html.PasswordFor(m => m.Password)
</li>
<li>
@Html.LabelFor(m => m.ConfirmPassword)
@Html.PasswordFor(m => m.ConfirmPassword)
</li>
</ol>
<input type="submit" value="注册" />
</fieldset>
}
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
<script src="~/Scripts/jQuery.validator.dayrange.js"></script>
}
效果:
MVC验证04-自定义验证规则、日期范围验证,古老的榕树,5-wow.com