Question

I have a controller like this:

        public ActionResult Index()
        {
            ViewBag.Title = "Index";
            ViewBag.LoggedIn = TheUser.CheckStatus();

            return View();
        }

Thing is, I have to set LoggedIn to the output of my other function TheUser.CheckStatus() so that I can reference it with razor… Is there a way in Razor to access a function straight off? for example…

@TheUser.CheckStatus

instead of

@ViewBag.LoggedIn

Answer 1

The recommended way in MVC for passing information to a view is to create a model specific to that view (aka view model) e.g.

public class IndexViewModel
{
    public string Title { get; set; }
    public bool IsAuthenticated { get; set; }
}
....
public ActionResult Index()
{
    return View(new IndexViewModel()
    {
        Title = "Index",
        IsAuthenticated = UserIsLoggedIn()
    });
}

However, to answer your question:

Is there a way in Razor to access a function straight off?

If you are using ASP.NET Membership you can use the IsAuthenticated property on the request e.g.

 @Request.IsAuthenticated

Otherwise, you do need to pass this information to the view (whether that be via ViewBag/view model etc.)

Alternatively, you could write your own extension method for Request which would allow you to access it directly in the view:

@Request.UserLoggedIn()

Or even as a HtmlHelper e.g.

public static class HtmlHelperExtensions
{ 
    public static bool UserIsLoggedIn(this HtmlHelper helper)
    {
        return /* authentication code here */
    }
}

Then in your views you can use @Html.UserIsLoggedIn() which I think is what you are after.