我有以下视图模型:
public class LoginViewModel
{
[DisplayName("Email Address")]
[Required(ErrorMessage = "PleaseEnterYourEmail")]
public string EmailAddress { get; set; }
}
我有以下资源文件名为:DataAnnotation.Localization.de-DE.resx,这是在App_LocalResources文件夹中
具有以下属性:
现在根据blog post announcing.net 4.6.2这应该可行,因为我应该将我的消息的本地化版本返回到视图。
然而,它只是显示:
我已经检查了我当前的文化,并将其设置为:de-DE,以便应用知道它需要显示的语言。目标框架也是4.6.2。
我在这里找不到什么东西?
答案 0 :(得分:2)
最后我找到了解决这个问题的方法。
在这里,我将与其他遇到同样问题的人分享我的解决方案。
将此类添加到您的asp.net核心应用程序:
using System;
using Microsoft.Extensions.Localization;
namespace App.Utilities
{
public static class StringLocalizerFactoryExtensions
{
public static IStringLocalizer CreateConventional<T>(this IStringLocalizerFactory factory)
{
return factory.CreateConventional(typeof(T));
}
public static IStringLocalizer CreateConventional(this IStringLocalizerFactory factory, Type type)
{
if (type.Module.ScopeName != "CommonLanguageRuntimeLibrary")
{
string[] parts = type.FullName.Split(new[] { type.Assembly.FullName.Split(',')[0] }, StringSplitOptions.None);
string name = parts[parts.Length - 1].Trim('.');
return factory.CreateConventional(name);
}
else
{
return factory.Create(type);
}
}
public static IStringLocalizer CreateConventional(this IStringLocalizerFactory factory, string resourceName)
{
return factory.Create(resourceName, null);
}
public static IStringLocalizer CreateDataAnnotation(this IStringLocalizerFactory factory)
{
if (type.Module.ScopeName != "CommonLanguageRuntimeLibrary")
{
return factory.Create("DataAnnotation.Localization", "App_LocalResources");
}
else
{
return factory.Create(type);
}
}
}
}
...并在您的Startup.cs文件中替换以下部分:
services.AddLocalization(options => options.ResourcesPath = "Resources");
services.AddMvc()
.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
.AddDataAnnotationsLocalization();
...使用此代码:
services.AddLocalization(options => options.ResourcesPath = "Resources");
services.AddMvc()
.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
//The following part includes the change:
.AddDataAnnotationsLocalization(options => options.DataAnnotationLocalizerProvider = (type, factory) => factory.CreateConventional(type));
代码正在处理您的视图模型本地化资源,例如用于视图的资源或可以使用默认IStringLocalizerFactory
的任何其他位置。
因此,不再需要DataAnnotation.Localization.de-DE.resx
个资源和App_LocalResources
文件夹。
只是,使用Models.AccountViewModels.RegisterViewModel.en-US.resx
文件夹中的常规命名(Models/AccountViewModels/RegisterViewModel.sv-SE.resx
或Resources
创建一系列资源文件,该文件夹通过调用设置services.AddLocalization(options => options.ResourcesPath = "Resources")
)你准备好了。 TagHelpers和HtmlHelpers将开始工作并翻译错误消息。
此外,这适用于DisplayAttribute.Name
开箱即用。 (v1.1.0-preview1-final + .net v4.6.2)
更新1:
这是我的project.json
:
{
"userSecretsId": "...",
"dependencies": {
"Microsoft.NETCore.Platforms": "1.1.0-preview1-*",
"Microsoft.AspNetCore.Authentication.Cookies": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Diagnostics": "1.1.0-preview1-final",
"Microsoft.AspNetCore.DataProtection": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Mvc": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview3-final",
"Microsoft.ApplicationInsights.AspNetCore": "1.0.2",
"Microsoft.AspNetCore.Mvc.Localization": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Mvc.Razor": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Mvc.TagHelpers": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Mvc.DataAnnotations": "1.1.0-preview1-final",
"Microsoft.Extensions.Configuration.CommandLine": "1.1.0-preview1-final",
"Microsoft.Extensions.Configuration.FileExtensions": "1.1.0-preview1-final",
"Microsoft.AspNet.WebApi.Client": "5.2.3",
"Microsoft.AspNetCore.Routing": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Server.IISIntegration": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Server.Kestrel": "1.1.0-preview1-final",
"Microsoft.AspNetCore.StaticFiles": "1.1.0-preview1-final",
"Microsoft.EntityFrameworkCore": "1.1.0-preview1-final",
"Microsoft.EntityFrameworkCore.SqlServer.Design": "1.1.0-preview1-final",
"Microsoft.Extensions.Configuration.EnvironmentVariables": "1.1.0-preview1-final",
"Microsoft.Extensions.Configuration.Json": "1.1.0-preview1-final",
"Microsoft.Extensions.Configuration.UserSecrets": "1.1.0-preview1-final",
"Microsoft.Extensions.Logging": "1.1.0-preview1-final",
"Microsoft.Extensions.Logging.Console": "1.1.0-preview1-final",
"Microsoft.Extensions.Logging.Debug": "1.1.0-preview1-final",
"Microsoft.Extensions.Options.ConfigurationExtensions": "1.1.0-preview1-final",
"Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0",
"Microsoft.VisualStudio.Web.CodeGeneration.Tools": "1.0.0-preview3-final",
"Microsoft.VisualStudio.Web.CodeGenerators.Mvc": "1.0.0-preview3-final",
"Microsoft.AspNetCore.Hosting": "1.1.0-preview1-final",
"Microsoft.AspNetCore.Hosting.WindowsServices": "1.1.0-preview1-final",
"Loggr.Extensions.Logging": "1.0.0",
"Microsoft.EntityFrameworkCore.SqlServer": "1.1.0-preview1-final",
"Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview3-final",
"BundlerMinifier.Core": "2.2.296"
},
"tools": {
"Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview3-final",
"Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview3-final",
"Microsoft.EntityFrameworkCore.Tools.DotNet": "1.0.0-preview3-final",
"Microsoft.Extensions.SecretManager.Tools": "1.0.0-preview3-final",
"Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
"version": "1.0.0-preview3-final",
"imports": [
"portable-net45+win8"
]
}
},
"frameworks": {
"net462": {}
},
"buildOptions": {
"emitEntryPoint": true,
"preserveCompilationContext": true
},
"runtimeOptions": {
"configProperties": {
"System.GC.Server": true
}
},
"publishOptions": {
"include": [
"wwwroot",
"**/*.cshtml",
"appsettings.json",
"web.config"
]
},
"scripts": {
"prepublish": [ "bower install", "dotnet bundle" ],
"postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
}
}
更新2:如果有人希望代码能够按照DataAnnotation.Localization
文件夹中App_LocalResourses
的承诺工作,我已更新了StringLocalizerFactoryExtensions
代码。使用更新的类和Startup.cs
类中的以下代码,它应该可以工作。
services.AddLocalization(options => options.ResourcesPath = "Resources");
services.AddMvc()
.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
//The following part includes the change:
.AddDataAnnotationsLocalization(options => options.DataAnnotationLocalizerProvider = (type, factory) => factory.CreateDataAnnotation());
答案 1 :(得分:2)
blog post announcing .NET Framework 4.6.2中所述的新DataAnnotations本地化功能仅为ASP.NET WebForms
开箱即用。
.NET Framework 4.6.2中的新本地化功能在类System.Web.ModelBinding.DataAnnotationsModelValidator
中实现,该类使用StringLocalizerProviders.DataAnnotationStringLocalizerProvider.GetLocalizedString
来解析本地化字符串。
System.Web.Mvc.DataAnnotationsModelValidator
默认设置为System.Web.Globalization.ResourceFileStringLocalizerProvider
。此提供程序尝试在指定网站的Temporary ASP.NET Files
文件夹中找到“App_LocalResources.root”dll。
但是,有一个预先检查是否应该使用功能:
private bool UseStringLocalizerProvider {
get {
// if developer already uses existing localization feature,
// then we don't opt in the new localization feature.
return (!string.IsNullOrEmpty(Attribute.ErrorMessage) &&
string.IsNullOrEmpty(Attribute.ErrorMessageResourceName) &&
Attribute.ErrorMessageResourceType == null);
}
}
以上检查意味着新的本地化功能仅适用于以下情况:
[Required(ErrorMessage = "FirstName is required")]
public string FirstName { get; set; }
设置ErrorMessage
值。对于大多数常见用例:
[Required]
public string FirstName { get; set; }
它回归到遗留名称解析。
MVC 5使用它自己的特定实现System.Web.Mvc.DataAnnotationsModelValidator
。此实现源自Microsoft.AspNet.Mvc
版本5.x.x,并且它早于.NET Framework 4.6.2。它没有实现新的本地化功能。
最重要的是,MVC和WebForms的ASP.NET动态编译输出不同,因此WebForms使用的编译资源(例如:de\App_LocalResources.root.q_wjw-ce.resources.dll
“)甚至不存在于ASP.NET的App_LocalResources
中MVC应用程序。
MVC和WebForms之间的编译输出的这种差异排除了围绕WebForms实现编写包装并在MVC应用程序中“按原样”使用它的可能性。
MVC 6使用第三个实现,Microsoft.AspNetCore.Mvc.DataAnnotations.Internal.DataAnnotationsModelValidator
。此实现接受IStringLocalizer stringLocalizer
作为构造函数参数。
默认本地化配置可以在Startup.cs
中添加为:
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
// Add framework services.
services.AddMvc()
.AddDataAnnotationsLocalization();
}
并且需要Startup.cs
Configure(...)
方法中的请求本地化,例如:
// Configure the localization options
app.UseRequestLocalization(new RequestLocalizationOptions
{
DefaultRequestCulture = new RequestCulture(new CultureInfo("de-AT")),
SupportedCultures = new List<CultureInfo>
{
new CultureInfo("de")
},
SupportedUICultures = new List<CultureInfo>
{
new CultureInfo("de-AT")
}
});
如果我们创建ViewModel:
using System.ComponentModel.DataAnnotations;
namespace WebApplication1.Models
{
public class User
{
[Required(ErrorMessage = "First name is required.")]
public string FirstName { get; set; }
}
}
我们必须在Models.User.{culture}.resx
的根目录中添加WebApplication
文件,并输入一个“名字是必需的”。和本地化验证 - 错误消息。
尽管MVC 6具有不同的实现,但与WebForms中的ValidationAttribute
相同的条件适用。必须定义ErrorMessage
,而不应使用ErrorMessageResourceName
和ErrorMessageResourceType
。