How to specify route to shared views in MVC3 when using Areas

问题

I have an MVC3/Razor app using Areas such that my views are in the following location:

/Areas/Areaname/Views/ControllerName/view.cshtml

Right now, for any shared partials, I have to put them here:

/Views/Shared/_sharedview.cshtml

I would prefer to have my shared views here:

/Areas/Shared/Views/_sharedvew.cshtml

Is there a way to tell the view engine to look somewhere other than the default location for shared views?

I am thinking something like this:

routes.MapRoute("Shared", "Areas/Shared/Views/{id}");

Thanks!

回答1:

I usually descend a class from VirtualPathProvider

Have a look here for more:

http://coderjournal.com/2009/05/creating-your-first-mvc-viewengine/

then register it in the startup:

HostingEnvironment.RegisterVirtualPathProvider(new EmbeddedViewPathProvider());

You do not have to deal with paths that are outside of your scope as you can pass the function on the the base definition as I do here in this embedded view path provider:

  public class EmbeddedViewPathProvider: VirtualPathProvider
    {
        static EmbeddedViewPathProvider()
        {
            ResourcePaths = new Dictionary<string, ViewResource>();
            foreach (var resource in SettingsManager.Get<CoreSettings>().Assemblies.Select(assembly => new ViewResource
                                                                                                           {
                                                                                                               VirtualPath = "/views/embedded/" + assembly.ToLower(), AssemblyName = assembly
                                                                                                           }))
            {
                AddResource(resource);
            }
        }

        public static void AddResource(ViewResource assemblyResource)
        {
            ResourcePaths.Add(assemblyResource.VirtualPath, assemblyResource);
        }
        private static Dictionary<string, ViewResource> ResourcePaths { get; set; }

        public bool IsAppResourcePath(string virtualPath)
        {

            var checkPath = VirtualPathUtility.ToAppRelative(virtualPath).ToLower();
            return ResourcePaths.Any(resourcePath => checkPath.Contains(resourcePath.Key) && ResourceExists(resourcePath.Value, checkPath));
        }

        private static bool ResourceExists(ViewResource assemblyResource, string path)
        {
            var name = assemblyResource.GetFullyQualifiedTypeFromPath(path);
            return Assembly.Load(assemblyResource.AssemblyName).GetManifestResourceNames().Any(s => s.ToLower().Equals(name));
        }


        public ViewResource GetResource(string virtualPath)
        {
            var checkPath = VirtualPathUtility.ToAppRelative(virtualPath).ToLower();
            return (from resourcePath in ResourcePaths where checkPath.Contains(resourcePath.Key) select resourcePath.Value).FirstOrDefault();
        }

        public override bool FileExists(string virtualPath)
        {
            var exists = base.FileExists(virtualPath);
            return exists || IsAppResourcePath(virtualPath);
        }

        public override VirtualFile GetFile(string virtualPath)
        {
            if (IsAppResourcePath(virtualPath) && !base.FileExists(virtualPath))
            {
                var resource = GetResource(virtualPath);
                return new ViewResourceVirtualFile(virtualPath, resource);
            }
            return base.GetFile(virtualPath);

        }

        public override CacheDependency
            GetCacheDependency(string virtualPath,
                               IEnumerable virtualPathDependencies,
                               DateTime utcStart)
        {
            if (IsAppResourcePath(virtualPath))
            {
                return null;
            }
            var dependencies = virtualPathDependencies.OfType<string>().Where(s => !s.ToLower().Contains("/views/embedded")).ToArray();
            return base.GetCacheDependency(virtualPath, dependencies, utcStart);

        }

        public override string GetCacheKey(string virtualPath)
        {
            return null;
        }

    }

来源：https://stackoverflow.com/questions/6375044/how-to-specify-route-to-shared-views-in-mvc3-when-using-areas