How to get filter to redirect to another action?

Question

RedirectToAction is protected, and we can use it only inside actions. But if I want to redirect in a filter?

public class IsGuestAttribute: Acti         


        

Answer 1

I know that I'm a little bit late to the party, but I used veggerby's solution and built a helper class that may be useful to some people, so I wanted to provide it here:

public static class ActionFilterHelpers
{
    public static void Redirect(this ActionExecutingContext filterContext, String controller, String action, object routeValues)
    {
        filterContext.Result = Redirect(controller, action, routeValues);
    }

    public static ActionResult Redirect(String controller, String action, object routeValues)
    {
        var routeValues = new RouteValueDictionary();

        routeValues["controller"] = controller;
        routeValues["action"] = action;

        foreach (var keyValue in new ObjectDictionary(routeValues))
            routeValues.Add(keyValue.Key, keyValue.Value);

        return new RedirectToRouteResult(routeValues);
    }
}

I provided both a static method that returns a redirect ActionResult and an extension method that extends filterContext. Hope someone finds this useful.

ObjectDictionary is a class that uses reflection to create a dictionary from the properties of the object from which it is constructed. I didn't include that code because I believe there is a better way to do that somewhere in the framework. I haven't found it yet, but I don't want others to inherit my potential bugs.