asp.net-mvc-3 - jQuery.validator.unobtrusive.adapters.addMinMax 往返，在 MVC3 中不起作用

Question

我正在使用 DataAnnotations、jQuery.validate 和 jquery.validate.unobtrusive 创建一个日期范围验证器。我已经阅读了以下内容: http://bradwilson.typepad.com/blog/2010/10/mvc3-unobtrusive-validation.html

http://weblogs.asp.net/mikaelsoderstrom/archive/2010/10/06/unobtrusive-validation-in-asp-net-mvc-3.aspx

以及其他但无法发布的内容(菜鸟)

以及关于 SO 的大部分帖子。我把头靠在墙上，任何帮助都可以得到啤酒/食物/代码/等奖励；)无论如何，这是代码:

我有一个具有以下参数的模型对象:

[Display(Name = "Start date"), 
 DayRange(0, 5, ErrorMessage = "The Start Date must be between today and 5 days time.")]
public DateTime StartDate { get; set; }

DayRange 是自定义属性类:

[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
public class DayRangeAttribute : RangeAttribute, IClientValidatable
{
    private int _minimumDays;
    private int _maximumDays;

    public DayRangeAttribute(int minimumDays, int maximumDays) : base(minimumDays, maximumDays) 
    {
        _minimumDays = minimumDays;
        _maximumDays = maximumDays;
    }

    public override bool IsValid(object value)
    {
        var dateToBeTested = value as DateTime?;
        return dateToBeTested.HasValue && dateToBeTested.Value >= DateTime.Today.AddDays(_minimumDays) && dateToBeTested.Value <= DateTime.Today.AddDays(_maximumDays);
    }

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        var rule = new ModelClientValidationRule
                         {
                             ErrorMessage = this.ErrorMessage,
                             ValidationType = "dayrange"
                         };
        rule.ValidationParameters.Add("min", _minimumDays);
        rule.ValidationParameters.Add("max", _maximumDays);
        yield return rule;
    }
}

我的 web.config 中有以下内容:

<appSettings>
    <add key="ClientValidationEnabled" value="true"/>
    <add key="UnobtrusiveJavaScriptEnabled" value="true"/>
</appSettings>

在文档准备好之前，我有以下 JS 触发器(也尝试在文档准备好时触发它):

jQuery.validator.addMethod('dayrange', function (value, element, param) {
    if (!value) return false;
    var now = Date();
    var dateValue = Date.parse(value);
    var minDate = now.setDate(now.getDate() - param.min);
    var maxDate = now.setDate(now.getDate() + param.max);

    return this.optional(element) && dateValue >= minDate && dateValue <= maxDate;
}, 'Must fall in range');

jQuery.validator.unobtrusive.adapters.addMinMax('dayrange', 'minlength', 'maxlength', 'dayrange');

我做错了什么？提前致谢，乔尔

Answer 1

解决了!我忘记/不明白你必须将 jQuery 本身传递到函数闭包中。因此，客户端的自定义验证器应如下所示:

$(function () {
    jQuery.validator.addMethod('dayRange', function (value, element, param) {
        if (!value) return false;
        var valueDateParts = value.split(param.seperator);
        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;
});

    jQuery.validator.unobtrusive.adapters.add('dayrange', ['min', 'max', 'dateseperator'], function (options) {
        var params = {
            min: options.params.min,
            max: options.params.max,
            seperator: options.params.dateseperator
        };

        options.rules['dayRange'] = params;
        if (options.message) {
            options.messages['dayRange'] = options.message;
        }
    });
}(jQuery));

我还更改了将适配器添加到不显眼的方式，以便我可以添加其他属性。永远不要发送给服务器端开发人员来做前端工程师的工作；)希望这对某人有帮助。