필터를 다른 작업으로 리디렉션하는 방법은 무엇입니까?

필터를 다른 작업으로 리디렉션하는 방법은 무엇입니까?

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RedirectToAction보호되며 우리는 액션 내부에서만 사용할 수 있습니다. 하지만 필터에서 리디렉션하려면?

public class IsGuestAttribute: ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        if (!Ctx.User.IsGuest) 
            filterContext.Result = (filterContext.Controller as Controller)
                .RedirectToAction("Index", "Home");
    }
}

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RedirectToAction는를 생성하는 도우미 메서드 일 뿐이 RedirectToRouteResult()므로 작업에 대한 값 RedirectToRouteResult()과 함께 새로운 전달을 생성하기 만하면 RouteValueDictionary()됩니다.

아래 주석에 @Domenic의 코드를 기반으로 한 완전한 샘플 :

public class IsGuestAttribute: ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        if (!Ctx.User.IsGuest) 
        {
            filterContext.Result = new RedirectToRouteResult(
                new RouteValueDictionary 
                { 
                    { "controller", "Home" }, 
                    { "action", "Index" } 
                });
        }
    }
}

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다음은 코드 예입니다.

public override void OnActionExecuting(ActionExecutingContext filterContext)
{

    if (!Ctx.User.IsGuest)
    {
        RouteValueDictionary redirectTargetDictionary = new RouteValueDictionary();
        redirectTargetDictionary.Add("action", "Index");
        redirectTargetDictionary.Add("controller", "Home");

        filterContext.Result = new RedirectToRouteResult(redirectTargetDictionary);
    }
}

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나는 파티에 조금 늦었다는 것을 알고 있지만 veggerby의 솔루션을 사용하고 일부 사람들에게 유용 할 수있는 도우미 클래스를 만들었으므로 여기에 제공하고 싶었습니다.

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);
    }
}

리디렉션을 반환하는 정적 메서드 ActionResult와 확장하는 확장 메서드를 모두 제공했습니다 filterContext. 누군가 이것이 유용하다고 생각하기를 바랍니다.

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.

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Security/Authorization/Authentication Filters should use the AuthorizeAttribute and IAuthorizationFilter.

public class IsGuestAttribute: AuthorizeAttribute, IAuthorizationFilter
{
    public void OnResultExecuted(ResultExecutedContext filterContext)
    {
    }
    public void OnActionExecuting(ActionExecutingContext filterContext)
    {
        if (!Ctx.User.IsGuest) 
        {
            filterContext.Result = new RedirectToRouteResult(
                new RouteValueDictionary 
                { 
                    { "controller", "Home" }, 
                    { "action", "Index" } 
                });
        }
    }
}

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Usage: filterContext.RedirectToAction("Login", "Account");

Here's a helper class I wrote with some extension methods written to provide RedirectToAction functionality in more places. This is far too late for the OP but hopefully it helps someone!

public static class RedirectHelper
{
    // RedirectToAction Extension Methods
    public static void RedirectToAction(this HttpResponseBase response, String action, String controller, object routeValues = null, bool endResponse = false)
    {
        response.RedirectToRoute(CreateRoute(action, controller, routeValues));
        if (endResponse) response.End();
    }
    public static void RedirectToAction(this HttpResponse response, String action, String controller, object routeValues = null, bool endResponse = false)
    {
        response.RedirectToRoute(CreateRoute(action, controller, routeValues));
        if (endResponse) response.End();
    }
    public static void RedirectToAction(this ActionExecutingContext filterContext, String action, String controller, object routeValues = null, bool endResponse = false)
    {
        if (endResponse) filterContext.HttpContext.Response.RedirectToAction(action, controller, routeValues, true);
        else filterContext.Result = new RedirectToRouteResult(CreateRoute(action, controller, routeValues));
    }
    public static void RedirectToAction(this ExceptionContext filterContext, String action, String controller, object routeValues = null, bool endResponse = false)
    {
        if (endResponse) filterContext.HttpContext.Response.RedirectToAction(action, controller, routeValues, true);
        else {
            filterContext.ExceptionHandled = true;
            filterContext.Result = new RedirectToRouteResult(CreateRoute(action, controller, routeValues));
        }
    }
    // Route Value Derivation
    public static RouteValueDictionary CreateRoute(String action, String controller, object routeValues = null)
    {
        RouteValueDictionary result = routeValues != null ? 
            HtmlHelper.AnonymousObjectToHtmlAttributes(routeValues) : 
            new RouteValueDictionary();
        result["controller"] = controller;
        result["action"] = action;
        return result;
    }
}

There are more ControllerContexts that are not included but it should be fairly easy to add your own based on your needs.

참고URL : https://stackoverflow.com/questions/550995/how-to-get-filter-to-redirect-to-another-action