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POWhy is my C# MVC4 Session Wrapper Service not working?
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copied!<p>I am trying to implement a wrapper for my session (Loose coupling so it is easy to make changes later) but I am having problems, either the storing into the session is failing, or the retrieval but I do not know which.</p> <p>I would greatly appreciate it if you could take a look at my code and tell me if there is anything obviously wrong, or a better way of doing what I am trying to do. I basically want to display different things to different types of user, but when I try to access the user in the ViewContext it is null.</p> <p>Any links to tutorials or examples would be gratefully accepted.</p> <p>Here is my code:</p> <ul> <li>User and WEB_USER_LEVEL have a one to many relationship</li> <li>I have used Entity Framework to create models from my existing database</li> <li>I am currently in the early stages of the project and the User is not coming from the database yet (as the structure will change) so I am creating a new User and populating it before using CurrentUserService.Login(user). i have tried pulling a user out of the data base and logging that user in but it still does not work.</li> </ul> <p><strong>ICurrentUserService.cs</strong> (in Infrastructure folder)</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace MyProject.Infrastructure { public interface ICurrentUserService { User CurrentUser { get; } void SetCurrentUser(WEB_USER user); void SetAdminStatus(bool type); bool GetAdminStatus { get; } void SetManagerStatus(bool type); bool GetManagerStatus { get; } void Login(User user); void Logout(); int? TryGetCurrentUserId(); } } </code></pre> <p><strong>CurrentUserService.cs</strong> (in Infrastructure folder)</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using MyProject.Controllers; using MyProject.Infrastructure.Filters; namespace MyProject.Infrastructure { public class CurrentUserService : ICurrentUserService { public const string CurrentUserKey = "CurrentUser"; public const string CurrentUserIdKey = "CurrentUserId"; public const string IsAdminKey = "IsAdmin"; public const string IsManagerKey = "IsManager"; private readonly IDb _db; public CurrentUserService() : this(new Db()) { } public CurrentUserService(IDb db) { _db = db; } public User CurrentUser { get { return (User)HttpContext.Current.Items[CurrentUserKey]; } } public void SetCurrentUser(User user) { HttpContext.Current.Items[CurrentUserKey] = user; } public void SetAdminStatus(bool type) { HttpContext.Current.Session[IsAdminKey] = type; } public bool GetAdminStatus { get { return (bool)HttpContext.Current.Session[IsAdminKey]; } } public void SetManagerStatus(bool type) { HttpContext.Current.Session[IsManagerKey] = type; } public bool GetManagerStatus { get { return (bool)HttpContext.Current.Session[IsManagerKey]; } } public void Login(User user) { HttpContext.Current.Session[CurrentUserIdKey] = user.ID; HttpContext.Current.Items[CurrentUserKey] = user; SetManagerStatus(user.WEB_USER_LEVEL.IsManager); SetAdminStatus(user.WEB_USER_LEVEL.RefID == 1 ? true : false); } public void Logout() { HttpContext.Current.Items[CurrentUserKey] = null; HttpContext.Current.Session[CurrentUserIdKey] = null; SetManagerStatus(false); SetAdminStatus(false); } public int? TryGetCurrentUserId() { return HttpContext.Current.Session[CurrentUserIdKey] as int?; } } } </code></pre> <p><strong>Extensions.cs</strong> (in Infrastructure folder)</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; namespace MyProject.Infrastructure { public static class Extensions { public static User CurrentUser(this ViewContext view) { return (User)view.HttpContext.Items[CurrentUserService.CurrentUserKey]; } } } </code></pre> <p><strong>HomeController.cs</strong></p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using MyProject.Infrastructure; using MyProject.Infrastructure.Filters; using MyProject.ViewModels; using MyProject.Models; using System.Data.Objects; namespace MyProject.Controllers { public class HomeController : BaseController { readonly IDb _db; readonly ICurrentUserService _currentUserService; readonly IErrorReporter _errorReporter; public HomeController() : this(new Db(), new CurrentUserService(), new ErrorReporter()) { } public HomeController(IDb db, ICurrentUserService currentUserService, IErrorReporter errorReporter) { _db = db; _currentUserService = currentUserService; _errorReporter = errorReporter; } public ActionResult Index() { return View(); } [HttpPost] public ActionResult Login(FormCollection form) { // Create new user and populate _currentUserService.Login(user); return RedirectToAction("Home"); } public ActionResult Home() { return View(); } } } </code></pre> <p><strong>Trying to access in ViewContext in _Layout.cshtml when the Home view is loaded</strong></p> <pre><code>@using MyProject.Infrastructure @if (ViewContext.CurrentUser() != null && ViewContext.CurrentUser().WEB_USER_LEVEL.IsManager) { @RenderPage("~/Views/Shared/_Menu.cshtml") } </code></pre> <p>But ViewContext.CurrentUser() is always null.</p> <p>Thank you for your help!</p>

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