gistfile1.cs

using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text.RegularExpressions;
using System.Web.Mvc;

namespace MyNamespace
{
    public class MyViewEngine : RazorViewEngine
    {
        protected override IView CreatePartialView(ControllerContext controllerContext, string partialPath)
        {
            partialPath = GetViewPath(controllerContext, partialPath);

            return base.CreatePartialView(controllerContext, partialPath);
        }

        protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath)
        {
            viewPath = GetViewPath(controllerContext, viewPath);

            return base.CreateView(controllerContext, viewPath, masterPath);
        }

        private static string GetViewPath(ControllerContext controllerContext, string viewPath)
        {
            var request = controllerContext.HttpContext.Request;
            var session = controllerContext.HttpContext.Session;

            var culture = new CultureInfo(session.GetCulture());

            var paths = new List<string>();
            string[] parms = null;
            if (controllerContext.RouteData.DataTokens.ContainsKey("org"))
            {

                parms = new string[] { culture.Name, culture.TwoLetterISOLanguageName, (string)controllerContext.RouteData.DataTokens["org"] };

                if (session.IsMobile())
                {
                    paths.AddRange(new string[] {
                        string.Format("~/Views/Clients/{2}/Mobile/i18n/{0}/", parms), // mobile client + locale
                        string.Format("~/Views/Clients/{2}/Mobile/i18n/{1}/", parms), // mobile client + language
                        string.Format("~/Views/Clients/{2}/Mobile/", parms), // mobile client
                    });
                }

                paths.AddRange(new string[] {
                    string.Format("~/Views/Clients/{2}/i18n/{0}/", parms), // client + locale
                    string.Format("~/Views/Clients/{2}/i18n/{1}/", parms), // client + language
                    string.Format("~/Views/Clients/{2}/", parms), // client
                });
            }
            else
            {
                parms = new string[] { culture.Name, culture.TwoLetterISOLanguageName };
            }

            if (session.IsMobile())
            {
                paths.AddRange(new string[] {
                    string.Format("~/Views/Mobile/i18n/{0}/", parms), // mobile client + locale
                    string.Format("~/Views/Mobile/i18n/{1}/", parms), // mobile client + language
                    string.Format("~/Views/Mobile/", parms), // mobile client
                });
            }

            paths.AddRange(new string[] { 
                string.Format("~/Views/i18n/{0}/", parms), // global + locale
                string.Format("~/Views/i18n/{1}/", parms) // global + language
            });

            foreach (var path in paths)
            {
                var localizedViewPath = Regex.Replace(viewPath, "^~/Views/", path);

                if (File.Exists(request.MapPath(localizedViewPath)))
                {
                    viewPath = localizedViewPath;
                }
            }

            return viewPath;
        }
    }
}