Handle Null Model

This is a simple and neat way to handle model nullity, usually returned by OrDefault part of LINQ query. Also a smilar one can be used for an empty IEnumrable.

public class HandleEmptyModelAttribute
    : ActionFilterAttribute {
    public override void OnActionExecuted
        (ActionExecutedContext filterContext) {
        if(filterContext.Controller.ViewData.Model
            == null) {
            filterContext.Result =
                new PartialViewResult {
                    ViewName = "Empty"
                };
        }
    }
}