For each pages on our site I'm looking to have a custom Model. I was hoping there was a way changing the default-controller and passing a custom model inherited from RenderModel on a Default Controller.

Can anyone point me in the right direction?

namespace JEC.Web.App_Start
{
    public class ApplicationEventHandler : IApplicationEventHandler
    {
        public void OnApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
            DefaultRenderMvcControllerResolver.Current.SetDefaultControllerType(typeof(MyCustomUmbracoController));
        }
    }
}

namespace JEC.Web.App_Start
{
    class CustomBaseUmbracoController : Umbraco.Web.Mvc.RenderMvcController
    {
        public override ActionResult Index(RenderModel model)
        {
            var viewModel = new MyCustomerViewModel(model.Content, model.CurrentCulture);

            //Do some stuff here, then return the base method
            return View(viewModel);
        }
    }
}


namespace JEC.Web.App_Start
{
    class MyCustomerViewModel : RenderModel
    {
        public MyCustomerViewModel(IPublishedContent content, CultureInfo culture)
            : base(content, culture)
        {
        }
        public string PropertyIWantForEveryPage { get{
        return "MyValue";
    } 

}

View

@inherits UmbracoViewPage<JEC.Web.App_Start.MyCustomerViewModel>
@Model.PropertyIWantForEveryPage;