如何获得过滤器重定向到另一个动作? [英] How to get filter to redirect to another action?
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问题描述
RedirectToAction
是受保护的,我们可以用它只能范围内的行为。但是,如果我想在一个过滤器重定向?
公共类IsGuestAttribute:ActionFilterAttribute
{
公共覆盖无效OnActionExecuting(ActionExecutingContext filterContext)
{
如果(!Ctx.User.IsGuest)
filterContext.Result =(filterContext.Controller控制器)
.RedirectToAction(索引,家);
}
}
解决方案
RedirectToAction
只是一个辅助的方法来构造一个 RedirectToRouteResult()
,所以你做的是简单地创建一个新的 RedirectToRouteResult()
沿传递 RouteValueDictionary()
为你的行动值。
在下面的评论的基础上code从@Domenic完整的示例:
公共类IsGuestAttribute:ActionFilterAttribute
{
公共覆盖无效OnActionExecuting(ActionExecutingContext filterContext)
{
如果(!Ctx.User.IsGuest)
{
filterContext.Result =新RedirectToRouteResult(
新RouteValueDictionary
{
{控制器,家},
{行动,索引}
});
}
}
}
RedirectToAction
is protected, and we can use it only inside actions. But if I want to redirect in a filter?
public class IsGuestAttribute: ActionFilterAttribute
{
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
if (!Ctx.User.IsGuest)
filterContext.Result = (filterContext.Controller as Controller)
.RedirectToAction("Index", "Home");
}
}
解决方案
RedirectToAction
is just a helper method to construct a RedirectToRouteResult()
, so what you do is simply create a new RedirectToRouteResult()
passing along a RouteValueDictionary()
with values for your action.
Complete sample based on code from @Domenic in the comment below:
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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