Hi

I have some problem making custom routing on specific urls like:

/case.aspx?branch=2736&casenumber=2736&utm_campaign=google&utm_source=google.dk&utm_medium=exitlinks

In Umbraco 8 I just make the routeconfig use a method in a custom controller. But I have some issues accessing the umbraco context when I trying that in Umbraco 9.

My controller:

 public class RoutingController : SurfaceController
{
    private IEnumerable<IPublishedContent> umbRoot;

    public RoutingController(
       IUmbracoContextAccessor umbracoContextAccessor,
       IUmbracoDatabaseFactory databaseFactory,
       ServiceContext services,
       AppCaches appCaches,
       IProfilingLogger profilingLogger,
       IPublishedUrlProvider publishedUrlProvider)
       : base(umbracoContextAccessor, databaseFactory, services, appCaches, profilingLogger, publishedUrlProvider)
    {
        umbRoot = umbracoContextAccessor.GetRequiredUmbracoContext().Content.GetAtRoot();

    }


    public IActionResult HandleCustomUrl([FromQuery] string branch, [FromQuery] string casenumber, [FromQuery] string utm_campaign, [FromQuery] string utm_source, [FromQuery] string utm_medium)
    {
        var allCases = umbRoot.Where(x => x.IsDocumentType("cases")).FirstOrDefault();
        var targetCase = allCases.Children.Where(x => x.Value<string>("caseID").Equals(casenumber)).FirstOrDefault();


        return RedirectToUmbracoPage(targetCase);
    }

}

My startup.cs:

        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseUmbraco()
            .WithMiddleware(u =>
            {
                u.UseBackOffice();
                u.UseWebsite();
            })
            .WithEndpoints(u =>
            {
                u.EndpointRouteBuilder.MapControllerRoute(
                  "Routing Controller",
                  "/case.aspx",
                  new { Controller = "Routing", Action = "HandleCustomUrl" });

                u.UseInstallerEndpoints();
                u.UseBackOfficeEndpoints();
                u.UseWebsiteEndpoints();
            });
    }

I hope someone can point me in the right direction here :)