Localized Views Using Razor

Question

I tried to be witty and use VirtualPathProvider to search for localized views. It takes the requested view path and modifies it when checking after the file. It returns a localized virtual file if found:

public pseudoclass MyFileProvider : VirtualPathProvider
{

    bool FileExists(string requestedPath)
    {
        if (IsLocalizedView(requestedPath))
          return true;
       return base.FileExists(requestedPath);
    }

    bool IsLocalizedView(string requestedPath)
    {
        var uri = requestedUri.AddLocaleByMagic("sv");
        if (FileExistsInternal(uri))
          return true;
    }

    //some more stuff to return the actual file
}

The problem is that I get the following exception:

VirtualPathProvider returned a VirtualFile object with VirtualPath set to '/Views/Shared/_Layout.sv.cshtml' instead of the expected '/Views/Shared/_Layout.cshtml'.

Of course, I could fake the file path, but this would create problems with caching and different localizations. Correctly?

- ? , . , , .

, :

/Views/User/Details.sv.cshtml

Hejsan @Model.FirstName

Detta är en lite rolig text på svenska.

/Views/User/Details.en.cshtml

Hello @Model.FirstName

This is a test on english.

public ActionResult Details()
{
  return View(new User()); //should automagically use a swedish or english view
}

( CurrentCulture) - .

Answer 1

ViewEngine, CurrentCulture. , ,

Answer 2

. , .

.

:

• Details.sv-fi.cshtml
• Details.sv.cshtml
• Details.en.cshtml
• Details.cshtml

    public class LocalizedRazorViewEngine : RazorViewEngine
    {
        public LocalizedRazorViewEngine()
        {
            DefaultLanguageCode = "en";
        }
        public string DefaultLanguageCode { get; set; }

        public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache)
        {
            var controllerName = (string)controllerContext.RouteData.Values["controller"];
            var language = GetLanguage(controllerName, viewName);
            if (language != "") language = "." + language;

            var masterPath = string.Format("~/Views/Shared/_Layout{0}.cshtml", language);
            var uri = string.Format("~/Views/{0}/{1}{2}.cshtml", controllerName, viewName, language);
            if (VirtualPathProvider.FileExists(uri))
                return new ViewEngineResult(CreateView(controllerContext, uri, masterPath), this);


            return base.FindView(controllerContext, viewName, masterName, useCache);
        }

        private string GetLanguage(string controllerName, string actionName)
        {
            string format = "~/Views/{0}/{1}.{2}.cshtml";
            if (VirtualPathProvider.FileExists(string.Format(format, controllerName, actionName, Thread.CurrentThread.CurrentCulture.Name)))
                return Thread.CurrentThread.CurrentCulture.Name;
            if (VirtualPathProvider.FileExists(string.Format(format, controllerName, actionName, Thread.CurrentThread.CurrentCulture.TwoLetterISOLanguageName)))
                return Thread.CurrentThread.CurrentCulture.TwoLetterISOLanguageName;
            if (VirtualPathProvider.FileExists(string.Format(format, controllerName, actionName, DefaultLanguageCode)))
                return DefaultLanguageCode;
            return string.Empty;
        }



    }

, , ( )

Answer 3

, ( ) , :

• MyView.cshtml - default
• MyView.pl.cshtml - Polish

.. etc.

    public class LocalizedRazor : RazorViewEngine
    {
    public LocalizedRazor()
        : base()
    {
    }

    public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache)
    {
        var controllerName = (string)controllerContext.RouteData.Values["controller"];
        var format = "~/Views/{0}/{1}.{2}.cshtml";
        var lang = Thread.CurrentThread.CurrentCulture.TwoLetterISOLanguageName;
        if (VirtualPathProvider.FileExists(string.Format(format, controllerName, viewName, lang)))
            return base.FindView(controllerContext, viewName + "." + lang, masterName, useCache);

        return base.FindView(controllerContext, viewName, masterName, useCache);
    }
    }

and in Global.asax:

   protected void Application_Start()
    {
        ViewEngines.Engines.Clear();
        ViewEngines.Engines.Add(new LocalizedRazor());
    }