我已经使用jquery验证插件几年了，但这是我第一次尝试混合使用MVC 3不显眼的验证。
事情的客户端信息分散在互联网上，很难找到足够深刻的东西来解释尚未使用的人。我一直在燃烧Google一小时，以了解如何创建自定义客户端验证器的示例。
@Html.TextBoxFor(model => Model.CCPayment.CardNumber,new { @class = "textInput validateCreditCard",maxLength = "20" }) $(document).ready(function () { jQuery.validator.unobtrusive.adapters.add('validateCreditCard',{},function (value,element) { alert('foo'); }); });
如果我在我的视图底部运行上面的代码，它绝对没有。我甚至尝试过jquery.validator.addmethod()，但仍然没有。从我的模型验证注释发出的所有客户端验证工作正常。
<div class="ctrlHolder">
<label>
<em>*</em>
Card Number:
</label>
@Html.TextBoxFor(model => Model.CCPayment.CardNumber,maxLength = "20" })
<p class="field-validation-valid formHint" data-valmsg-for="CCPayment.CardNumber"></p>
</div>
解决方法
以下是您可以继续的方法。首先，您需要编写自定义验证器属性，以确保在服务器端执行验证。你可以使用这个
blog post描述的那个：
public class CreditCardAttribute : ValidationAttribute,IClientValidatable
{
private CardType _cardTypes;
public CardType AcceptedCardTypes
{
get { return _cardTypes; }
set { _cardTypes = value; }
}
public CreditCardAttribute()
{
_cardTypes = CardType.All;
}
public CreditCardAttribute(CardType AcceptedCardTypes)
{
_cardTypes = AcceptedCardTypes;
}
public override bool IsValid(object value)
{
var number = Convert.ToString(value);
if (String.IsNullOrEmpty(number))
return true;
return IsValidType(number,_cardTypes) && IsValidNumber(number);
}
public override string FormatErrorMessage(string name)
{
return "The " + name + " field contains an invalid credit card number.";
}
public enum CardType
{
Unknown = 1,Visa = 2,MasterCard = 4,Amex = 8,Diners = 16,All = CardType.Visa | CardType.MasterCard | CardType.Amex | CardType.Diners,AllOrUnknown = CardType.Unknown | CardType.Visa | CardType.MasterCard | CardType.Amex | CardType.Diners
}
private bool IsValidType(string cardNumber,CardType cardType)
{
// Visa
if (Regex.IsMatch(cardNumber,"^(4)")
&& ((cardType & CardType.Visa) != 0))
return cardNumber.Length == 13 || cardNumber.Length == 16;
// MasterCard
if (Regex.IsMatch(cardNumber,"^(51|52|53|54|55)")
&& ((cardType & CardType.MasterCard) != 0))
return cardNumber.Length == 16;
// Amex
if (Regex.IsMatch(cardNumber,"^(34|37)")
&& ((cardType & CardType.Amex) != 0))
return cardNumber.Length == 15;
// Diners
if (Regex.IsMatch(cardNumber,"^(300|301|302|303|304|305|36|38)")
&& ((cardType & CardType.Diners) != 0))
return cardNumber.Length == 14;
//Unknown
if ((cardType & CardType.Unknown) != 0)
return true;
return false;
}
private bool IsValidNumber(string number)
{
int[] DELTAS = new int[] { 0,1,2,3,4,-4,-3,-2,-1,0 };
int checksum = 0;
char[] chars = number.tocharArray();
for (int i = chars.Length - 1; i > -1; i--)
{
int j = ((int)chars[i]) - 48;
checksum += j;
if (((i - chars.Length) % 2) == 0)
checksum += DELTAS[j];
}
return ((checksum % 10) == 0);
}
public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata Metadata,ControllerContext context)
{
yield return new ModelClientValidationRule
{
ErrorMessage = this.ErrorMessage,ValidationType = "creditcard"
};
}
}
请注意，我修改了它，使其实现了IClientValidatable接口，并添加了GetClientValidationRules方法，该方法只是使用相同的错误消息进行客户端验证作为服务器端，并为该验证器提供了一个唯一的名称，该名称将由jquery unobtrusive适配器使用。现在剩下的是用这个属性来装饰你的模型属性：
[CreditCard(ErrorMessage = "Please enter a valid credit card number")] [required] public string CardNumber { get; set; }
在你看来：
<script src="@Url.Content("~/Scripts/jquery.validate.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.js")" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
jQuery.validator.unobtrusive.adapters.addBool('creditcard');
});
</script>
@using (Html.BeginForm())
{
@Html.TextBoxFor(x => x.CardNumber)
@Html.ValidationMessageFor(x => x.CardNumber)
<input type="submit" value="OK" />
}
