添加mvc3不显眼的验证最小/最大验证器

Question

我想为我的自定义类型实现客户端验证，但我不知道如何为最小/最大验证器。

型号：

[MultilanguagePropertyRequired(ErrorMessageResourceName = "fld_Description_val_Required", ErrorMessageResourceType = typeof(Resources.Service.Controllers.Firm))] 
[MultilanguagePropertyStringLength(1000, MinimumLength = 150, ErrorMessageResourceName = "fld_Description_val_MinLength_lbl", ErrorMessageResourceType = typeof(Resources.Service.Controllers.Firm))]  
[Display(Name = "fld_Description_lbl", ResourceType = typeof(Resources.Service.Controllers.Firm))] 
public MultilanguageProperty<string> Description 
{ 
    get 
    { 
     return this.GetMultilanguageProperty("Description", string.Empty, this); 
    } 

    set 
    { 
     this.SetMultilanguageProperty("Description", value); 
    } 
} 

这是我的一个扩展 “StringLegth” 自定义字符串长度属性：

[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = true)] 
public class MultilanguagePropertyStringLengthAttribute : StringLengthAttribute, IClientValidatable 
{ 
    public MultilanguagePropertyStringLengthAttribute(int length) : base(length) 
    { 
    } 

    public override bool IsValid(object value) 
    { 
     string strValue = (string)(value as MultilanguageProperty<string>).Value; 

     return base.IsValid(strValue); 
    } 

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

然后对我的看法我有这样的： ..

<script type="text/javascript"> 
    (function ($) { 
     $.validator.unobtrusive.adapters.addBool("multilanguagerequired", "required"); 
     $.validator.unobtrusive.adapters.addMinMax("multilanguagestringlength", "minlength", "maxlength"); 
    } (jQuery)); 
</script> 

..

哪些不起作用。我在这里错过了什么？ 谢谢

Answer 1

我正在以不同的方式解决类似的问题，但嘿，尝试这段代码的一些部分！我的意思是用于字符串长度验证的GetClientValidationRules（）方法。

public sealed class MyStringLengthAttribute : StringLengthAttribute, IClientValidatable 
    { 
     private int? labelId; 

     public MyStringLengthAttribute(int label, int maximumLength) 
      : base(maximumLength) 
     { 
      labelId = label; 
     } 

     public override string FormatErrorMessage(string name) 
     { 
      if (labelId.HasValue) 
      { 
       return String.Format(MyLabel.Label(labelId.Value), name); 
      } 
      return String.Format(MyLabel.Default("FieldTooLong_Validation", "Field {0} is too long"), name); 
     } 

     public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) 
     { 
      StringLengthAttributeAdapter adapt = new StringLengthAttributeAdapter(metadata,context, this); 
      return adapt.GetClientValidationRules(); 
     } 
    } 

我使用我在.NET框架中找到的Adapter类，并且不需要自定义Javascript工作。

，并依照本如果你仍然想要做自定义JS部分http://itmeze.com/2010/12/06/checkbox-has-to-be-checked-with-unobtrusive-jquery-validation-and-asp-net-mvc-3/

Answer 2

没有必要有一个自定义客户端验证。你可以尝试这样的：

[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = false, Inherited = true)] 
public sealed class ValidatePasswordLengthAttribute : ValidationAttribute, IClientValidatable { 
    private const string _defaultErrorMessage = "'{0}' must be between {1} and {2} characters long."; 
    private readonly int _minCharacters, _maxCharacters; 

    public ValidatePasswordLengthAttribute(int minLength, int maxLength) 
     : base(_defaultErrorMessage) { 
      _minCharacters = minLength; 
      _maxCharacters = maxLength; 
    } 

    public override string FormatErrorMessage(string name) { 
     return String.Format(CultureInfo.CurrentCulture, ErrorMessageString, 
      name, _minCharacters, _maxCharacters); 
    } 

    public override bool IsValid(object value) { 
     string valueAsString = value as string; 
     return (valueAsString != null && valueAsString.Length >= _minCharacters && valueAsString.Length <= _maxCharacters); 
    } 

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { 
     return new[]{ 
      new ModelClientValidationStringLengthRule(FormatErrorMessage(metadata.GetDisplayName()), _minCharacters, _maxCharacters) 
     }; 
    } 
} 

它来自内置的MVC3互联网项目模板。

Answer 3

我也有同样的问题。你缺少在GetClientValidationRules ValidationParameters：

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; 
} 

我仍然有与jQuery.validator和jQuery.validator.unobtrusive.adapters之间的布线问题，但这里的代码。希望它有帮助：

$(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.addMinMax('dayrange', 'minlength', 'maxlength', 'dayrange'); 

    }(jQuery));