How do you return something in a ActionFilterAttribute?

Question

Hi

I am trying to use the ActionFilterAttribute in asp.net mvc. What I want to do is check if the users subscription is expired if it is I want to redirect the user to a page if not then do nothing.

But the methods that you can override are all void. So how do I do this? Like I don't even know how to unit test it either since it is void.

public override void OnActionExecuting(ActionExecutingContext filterContext)

Answer 1

I think what you want is an Authorization Filter:

public override void OnAuthorization(AuthorizationContext filterContext)
{
    if (...subscriptionExpired...)
    {
        filterContext.Cancel = true;
        filterContext.Result = new RedirectResult("/user/login");
    }
}