MVC Attribute Routing Not Working

Question

I'm relatively new to the MVC framework but I do have a functioning Web Project with an API controller that utilizes AttributeRouting (NuGet package) - however, I'm starting another project and it just does not want to follow the routes I put in place.

Controller:

public class BlazrController : ApiController
{
    private readonly BlazrDBContext dbContext = null;
    private readonly IAuthProvider authProvider = null;

    public const String HEADER_APIKEY = "apikey";
    public const String HEADER_USERNAME = "username";

    private Boolean CheckSession()
    {
        IEnumerable<String> tmp = null;
        List<String> apiKey = null;
        List<String> userName = null;

        if (!Request.Headers.TryGetValues(HEADER_APIKEY, out tmp)) return false;
        apiKey = tmp.ToList();

        if (!Request.Headers.TryGetValues(HEADER_USERNAME, out tmp)) return false;
        userName = tmp.ToList();

        for (int i = 0; i < Math.Min(apiKey.Count(), userName.Count()); i++)
            if (!authProvider.IsValidKey(userName[i], apiKey[i])) return false;

        return true;
    }

    public BlazrController(BlazrDBContext db, IAuthProvider auth)
    {
        dbContext = db;
        authProvider = auth;
    }

    [GET("/api/q/users")]
    public IEnumerable<string> Get()
    {

        return new string[] { "value1", "value2" };
    }

    [GET("api/q/usersauth")]
    public string GetAuth()
    {
        if (!CheckSession()) return "You are not authorized";

        return "You are authorized";
    }
}

AttributeRoutingConfig.cs

public static class AttributeRoutingConfig
{
    public static void RegisterRoutes(RouteCollection routes) 
    {    
        // See http://github.com/mccalltd/AttributeRouting/wiki for more options.
        // To debug routes locally using the built in ASP.NET development server, go to /routes.axd

        routes.MapAttributeRoutes();
    }

    public static void Start() 
    {
        RegisterRoutes(RouteTable.Routes);
    }
}

Global.asax.cs:

// Note: For instructions on enabling IIS6 or IIS7 classic mode, // visit http://go.microsoft.com/?LinkId=9394801

public class WebApiApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();

        WebApiConfig.Register(GlobalConfiguration.Configuration);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }
}

When I try to navigate to /api/q/users - I get a 404 not found error. If I change the routes to be "/api/blazr/users" - I get an error about multiple actions and not being able to determine which action to take.

Any help is appreciated - I really just need a small nudge to figure out where the issue is, no need to solve it completely for me (I need to learn!)

Thanks

EDIT

routes.axd:

api/{controller}/{id}
{resource}.axd/{*pathInfo}          
{controller}/{action}/{id}

When you use the 'route debugger' from AttributeRouting (should be available at ~/routes.axd) do you see the expected routes from the attributes, i.e. /api/q/users? — David Tansey
Nope, just the api/{controller}/{id}, {resource}.axd/{*pathInfo} and {controller}/{action}/{id}. When I break the application on the MapAttributeRoutes() - the route collection comes back with 0 routes... — Teagan42
I got the routes to show up in routes.axd by implementing IController in my controller - but it's still not quite right (returns empty page) — Teagan42
I updated the question. The issue was I had the MVC AttributeRouting NuGet but needed the web api nuget for AttributeRouting — Teagan42

Derreck Dean Derreck Dean · Accepted Answer · 2015-05-18T15:24:17

Not only do you have to have the call to routes.MapMvcAttributeRoutes() in your App_Start\RouteConfig.cs file, it must appear before defining your default route! I add it before that and after ignoring {resource}.axd{*pathInfo}. Just found that out trying to get attribute routing to work correctly with my MVC 5 website.

    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapMvcAttributeRoutes();

        routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Account", action = "Index", id = UrlParameter.Optional }
        );

    }

MVC Attribute Routing Not Working

5 Answers