Hi guys,

I have implemented a custom route "/performer/{performer-name}" that I have mapped to a CMS page with actual url "/performers/performer". I have followed the guides available for Umbraco 8 and have implemented a RegisterCustomRouteComposer logic to be able to register my route.

The issue I have is that top navigation razor logic fails on the page in question with the following:

  [ArgumentException: Value cannot be null or whitespace. Parameter name: text] Umbraco.Web.Routing.UrlInfo..ctor(String text, Boolean isUrl, String culture) +153 Umbraco.Web.Routing.CustomRouteUrlProvider.GetUrl(UmbracoContext umbracoContext, IPublishedContent content, UrlProviderMode mode, String culture, Uri current)

This is thrown in the topNavigation partial, the Url property of PublishedContentWrapped:

<a class="nav-link" href="@item.Url">@item.Name</a> // item is IPublishedContent

Weirdly, this only becomes an issue after an app pool / website recycle. Rebuilding the solution with a trivial change fixes it..

Custom Route Composer:

public class RegisterCustomRouteComposer : ComponentComposer<RegisterCustomRouteComponent>
{
}

public class RegisterCustomRouteComponent : IComponent
{
    public void Initialize()
    {
        RegisterRoutes(RouteTable.Routes);
    }

    public void Terminate()
    {               
    }

    private static void RegisterRoutes(RouteCollection routes)
    {
        RouteTable.Routes.MapUmbracoRoute("Performer details", "performer/{performername}", new
        {
            controller = "Performer",
            action = "Index", 
            performername = UrlParameter.Optional
        }, new PerformerNodeRouteHandler());
    }
}   

Virtual Route Handler:

public class PerformerNodeRouteHandler : UmbracoVirtualNodeRouteHandler
{
    protected override IPublishedContent FindContent(RequestContext requestContext, UmbracoContext umbracoContext)
    {
        var performerPage = umbracoContext.ContentCache.GetAtRoot().First().Descendant<Performer>();
        return performerPage;
    }
}

Controller:

    public class PerformerController : Umbraco.Web.Mvc.RenderMvcController
{
    // GET: Performer page
    public ActionResult Index(ContentModel model, string performername)
    {
        var viewModel = new PerformerViewModel(model.Content){PerformerName = performername };
        return CurrentTemplate(viewModel);
    }

}

Any help on this would be much appreciated!

Thanks, Ross