Hi all.

Using Umbraco 8.1.1 and i wanna know how to register RenderControllerFactory.

public class CultureinfoControllerFactory : RenderControllerFactory
{
    public override IController CreateController(RequestContext requestContext, string controllerName)
    {
        // Makeing sure nothing is null, and that the header we need exists.
        if (requestContext != null
            && requestContext.HttpContext != null
            && requestContext.HttpContext.Request != null
            && requestContext.HttpContext.Request.Headers != null
            && requestContext.HttpContext.Request.Headers["set-cultureinfo"] != null
            && !string.IsNullOrEmpty(requestContext.HttpContext.Request.Headers["set-cultureinfo"]))
        {
            // Createing a cultureInfo from the set-cultureinfo header value.
            var cultureInfo = CultureInfo.CreateSpecificCulture(requestContext.HttpContext.Request.Headers["set-cultureinfo"].ToString());

            System.Threading.Thread.CurrentThread.CurrentCulture = cultureInfo;
            System.Threading.Thread.CurrentThread.CurrentUICulture = cultureInfo;
        }

        return base.CreateController(requestContext, controllerName);
    }
}

In v7 i did this

using System.Web.Mvc;
using Umbraco.Core;

namespace My.WebApplication.Namespace
{
    public class FactoryApplicationEvent : ApplicationEventHandler
    {
        protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
            ControllerBuilder.Current.SetControllerFactory(typeof(CultureinfoControllerFactory));
        }
    }
}

But i guess i have to do it in an IUserComposer now, but how?

public class InstallerComposer : IUserComposer
{
    public void Compose(Composition composition)
    {
        composition.???  
    }
}

Maybe i should use IRenderMvcController but i dunno what to put inside the Index. https://our.umbraco.com/documentation/Reference/Routing/custom-controllers

public class MyRenderMvcController : IRenderMvcController
{
    public void Execute(RequestContext requestContext)
    {
        throw new NotImplementedException();
    }

    public ActionResult Index(ContentModel model)
    {
        throw new NotImplementedException();
    }
}