我有这个课:
public abstract class MyController : Controller
{
protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
string viewPath = filterContext/*... .ViewPath*/;
viewPath = "Some new View Path";
}
}
我想检索执行视图的路径并将其替换为另一视图。我尝试调试Web调用上的筛选器上下文,但是没有设法找到要渲染的视图。
我怎么做?
最佳答案
从MSDN:Controller.OnActionExecuting Method
:在调用action方法之前调用。在此阶段,由于ActionResult
尚未执行,因此不存在Action
。
您最好改用OnResultExecuting
:
protected override void OnResultExecuting(ResultExecutingContext filterContext)
{
var viewResult = filterContext.Result as ViewResult;
if (viewResult != null)
{
var razorEngine = viewResult.ViewEngineCollection.OfType<RazorViewEngine>().Single();
var viewName = !String.IsNullOrEmpty(viewResult.ViewName) ? viewResult.ViewName : filterContext.RouteData.Values["action"].ToString();
var razorView = razorEngine.FindView(filterContext.Controller.ControllerContext, viewName, viewResult.MasterName, false).View as RazorView;
var currentPath = razorView.ViewPath;
var newPath = currentPath.Replace("..", "...");
viewResult.View = new RazorView(filterContext.Controller.ControllerContext, newPath, razorView.LayoutPath, razorView.RunViewStartPages, razorView.ViewStartFileExtensions);
}
base.OnResultExecuting(filterContext);
}