有一种方法可以将默认资源设置为数据注释验证吗?
我不想做这样的事情:
[Required(ErrorMessage="Name required.", ErrorMessageResourceType=typeof(CustomDataAnnotationsResources)]
public string Name { get; set; }
我想要这样的东西:
Global.asax
DataAnnotations.DefaultResources = typeof(CustomDataAnnotationsResources);
然后
[Required]
public string Name { get; set; }
谁来给我一根火!
提前感谢
编辑
我真正的问题是EF Code First CTP4。CTP5修复它。感谢大家。
发布于 2010-12-03 09:24:34
您可以尝试这样做:
将此类添加到项目中的某个位置:
public class ExternalResourceDataAnnotationsValidator : DataAnnotationsModelValidator<ValidationAttribute>
{
/// <summary>
/// The type of the resource which holds the error messqages
/// </summary>
public static Type ResourceType { get; set; }
/// <summary>
/// Function to get the ErrorMessageResourceName from the Attribute
/// </summary>
public static Func<ValidationAttribute, string> ResourceNameFunc
{
get { return _resourceNameFunc; }
set { _resourceNameFunc = value; }
}
private static Func<ValidationAttribute, string> _resourceNameFunc = attr => attr.GetType().Name;
public ExternalResourceDataAnnotationsValidator(ModelMetadata metadata, ControllerContext context, ValidationAttribute attribute)
: base(metadata, context, attribute)
{
if (Attribute.ErrorMessageResourceType == null)
{
this.Attribute.ErrorMessageResourceType = ResourceType;
}
if (Attribute.ErrorMessageResourceName == null)
{
this.Attribute.ErrorMessageResourceName = ResourceNameFunc(this.Attribute);
}
}
}
在您的global.asax中,添加以下内容:
// Add once
ExternalResourceDataAnnotationsValidator.ResourceType = typeof(CustomDataAnnotationsResources);
// Add one line for every attribute you want their ErrorMessageResourceType replaced.
DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(RangeAttribute), typeof(ExternalResourceDataAnnotationsValidator));
它将查找与错误消息的验证器类型同名的属性。您可以通过ResourceNameFunc属性对其进行更改。
编辑: AFAIK从MVC2开始工作,因为DataAnnotationsModelValidatorProvider是在MVC2中引入的。
发布于 2010-11-29 14:49:16
为此,我创建了一个继承自RequiredAttribute的新类,并将错误消息嵌入到这个新类中:
public class RequiredWithMessageAttribute : RequiredAttribute
{
public RequiredWithMessageAttribute()
{
ErrorMessageResourceType = typeof(ValidationResource);
ErrorMessageResourceName = "RequiredErrorMessage";
}
}
错误消息取自ValidationResource.resx文件,我在其中列出了错误消息,如下所示:
RequiredErrorMessage --> "{0}是必需的。“
其中{0} =显示名称。
然后我像这样注释我的模型,所以我永远不需要重复我的错误消息声明:
[RequiredWithMessage]
public string Name { get; set; }
执行此操作后,会出现一条错误消息("Name is requied.“)将在验证失败时出现。
这可以与ASP.NET MVC的服务器端验证和客户端验证一起正常工作。
发布于 2010-12-03 21:13:40
我做了另一种方法。它仍然需要您继承DataAnnotation
属性,但您可以获得更灵活的翻译解决方案。
来自my blog post的代码(阅读了解更多细节)
最终结果
public class User
{
[Required]
[LocalizedDisplayNameAttribute("User_Id")]
public int Id { get; set; }
[Required]
[StringLength(40)]
[LocalizedDisplayNameAttribute("User_FirstName")]
public string FirstName { get; set; }
[Required]
[StringLength(40)]
[LocalizedDisplayNameAttribute("User_LastName")]
public string LastName { get; set; }
}
像这样的,1继承了所有的数据注释属性
public class RequiredAttribute : System.ComponentModel.DataAnnotations.RequiredAttribute
{
private string _displayName;
public RequiredAttribute()
{
ErrorMessageResourceName = "Validation_Required";
}
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
_displayName = validationContext.DisplayName;
return base.IsValid(value, validationContext);
}
public override string FormatErrorMessage(string name)
{
var msg = LanguageService.Instance.Translate(ErrorMessageResourceName);
return string.Format(msg, _displayName);
}
}
2继承DisplayNameAttribute
public class LocalizedDisplayNameAttribute : DisplayNameAttribute
{
private PropertyInfo _nameProperty;
private Type _resourceType;
public LocalizedDisplayNameAttribute(string className, string propertyName)
: base(className + (propertyName == null ? "_Class" : ("_" + propertyName)))
{
}
public override string DisplayName
{
get
{
return LanguageService.Instance.Translate(base.DisplayName) ?? "**" + base.DisplayName + "**";
}
}
}
3.创建语言服务(您可以在其中切换到任何语言源)
public class LanguageService
{
private static LanguageService _instance = new LanguageService();
private List<ResourceManager> _resourceManagers = new List<ResourceManager>();
private LanguageService()
{
}
public static LanguageService Instance { get { return _instance; } }
public void Add(ResourceManager mgr)
{
_resourceManagers.Add(mgr);
}
public string Translate(string key)
{
foreach (var item in _resourceManagers)
{
var value = item.GetString(key);
if (value != null)
return value;
}
return null;
}
}
最后,您需要注册用于转换验证消息和模型的字符串表
LanguageService.Instance.Add(MyNameSpace.ModelResource.ResourceManager);
LanguageService.Instance.Add(MyNameSpace.ValidationResources.ResourceManager);
https://stackoverflow.com/questions/3260748
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