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我希望能够验证输入的生日是否为 18 岁或以上。我已经搜索并找到了许多关于此的帖子。然而，我不明白

1）为什么 MS 没有像其他验证（如字符串、电子邮件、密码等）一样将其构建到 MVC3 中。 2）为什么当我使用 javascript 来正确验证日期时，其他不引人注目的 js 不起作用不再。

我想在提交之前进行客户端验证，日期似乎不适用于此。其余的都可以。

我错过了什么吗？

我在模型中尝试过的一些代码

   #1)    [Display(Name = "Date of Birth (must be at least 18) ")]
    public DateTime Birthdate
    {
        get
        {
            if ((SelectedBMonth != "0") && (SelectedBday != "0") && (SelectedBYear != "0"))
                return DateTime.Parse(SelectedBMonth + "/" + SelectedBday + "/" + SelectedBYear);
            else 
                return DateTime.MinValue;
        }
    }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        if (Birthdate.Date > DateTime.Today.AddYears(-18)) 
            yield return new ValidationResult("You must be at least 18 years old to register", new[] { "Birthdate" });
    }
#2)
         [Required]        
    [CustomValidation(typeof(RegisterModel), "ValidateDOBDate")] 
    [DataType(DataType.Date)]
    [Display(Name = "Date of Birth")]        
    public DateTime DateOfBirth { get; set; }

    public static ValidationResult ValidateDOBDate(DateTime DateOfBirthtovalidate) { if (DateOfBirthtovalidate.Date > DateTime.Now.AddYears(-18)) { return new ValidationResult("User should be atleast 18 years old."); } if (DateOfBirthtovalidate.Date < DateTime.Now.AddYears(-150)) { return new ValidationResult("Please put a valid date"); } return ValidationResult.Success; } 

#3)
       public class DateofBirthAttribute : ValidationAttribute, IClientValidatable
    {
        public override bool IsValid(object value)
        {
            if (value == null || (DateTime)value < DateTime.Today.AddYears(-18))
                return false;

            return true;
        }

        public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
        {
            yield return new ModelClientValidationRule
            {
                ErrorMessage = this.ErrorMessage,
                ValidationType = "dateofbirth"
            };
        }
    }

    [Required]
    [Display(Name = "Date of Birth")]
    [DateofBirth(ErrorMessage = "User must be at least 18")]
    public DateTime Birthdate { get; set; }

View : 

 <div class="editor-label">
            @Html.LabelFor(m => m.Birthdate)
        </div>
        <div class="editor-field">                
        @Html.TextBoxFor(x => x.Birthdate)
@Html.ValidationMessageFor(x => x.Birthdate)
</div>

Top of view before beginform:
<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>
<script src="@Url.Content("~/Scripts/MyScripts.js")" type="text/javascript"></script>
<script type="text/javascript">
// we add a custom jquery validation method
jQuery.validator.addMethod('greaterThan', function (value, element, params) {
    if (!/Invalid|NaN/.test(new Date(value))) {
        return new Date(value) > new Date($(params).val());
    }
    return isNaN(value) && isNaN($(params).val()) || (parseFloat(value) > parseFloat($(params).val()));
}, '');

// and an unobtrusive adapter
jQuery.validator.unobtrusive.adapters.add('dateofbirth', {}, function (options) {
    options.rules['greaterThan'] = true;
    options.messages['greaterThan'] = options.message;
});
</script>
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1 回答 1

0

这是一个取决于当前日期的动态验证，并且在默认验证选项中不可用。

您可以轻松实现它，但不会生成客户端验证。

您还必须实现客户端 javascript 验证。

有关向 ASP.NET MVC 添加新验证的更多信息，请查看此ASP .Net MVC 3 unobtrusive custom client validation。

于 2012-12-03T17:51:58.267 回答