protected override void OnPageException(IDotvvmRequestContext context, Exception exception)
{
context.IsPageExceptionHandled = true;
context.RedirectToUrl("/error500");
base.OnPageException(context, exception);
}
/// <summary>
/// Returns the redirect response and interrupts the execution of current request.
/// </summary>
public static void RedirectToRoute(this IDotvvmRequestContext context, string routeName, object newRouteValues = null, bool replaceInHistory = false, bool allowSpaRedirect = true, string urlSuffix = null, object query = null)
{
var route = context.Configuration.RouteTable[routeName];
var url = route.BuildUrl(context.Parameters, newRouteValues) + UrlHelper.BuildUrlSuffix(urlSuffix, query);
context.RedirectToUrl(url, replaceInHistory, allowSpaRedirect);
}
protected override void OnPageException(IDotvvmRequestContext context, Exception exception)
{
context.IsPageExceptionHandled = true;
context.RedirectToUrl("/error500");
base.OnPageException(context, exception);
}
protected override Task OnPageExceptionAsync(IDotvvmRequestContext context, Exception exception)
{
if (!context.HttpContext.Request.Query.ContainsKey("redirected"))
{
context.RedirectToUrl(context.HttpContext.Request.Url.AbsoluteUri + "?redirected=true");
}
return(base.OnPageExceptionAsync(context, exception));
}
public static void RedirectToLocalUrl(this IDotvvmRequestContext context, string url, bool replaceInHistory = false, bool allowSpaRedirect = false)
{
if (!UrlHelper.IsLocalUrl(url))
{
throw new InvalidOperationException($"The URL '{url}' is not local or contains invalid characters!");
}
context.RedirectToUrl(url, replaceInHistory, allowSpaRedirect);
}
/// <summary>
/// If the request is SPA request, we need to verify that the page contains the same SpaContentPlaceHolder.
/// Also we need to check that the placeholder is the same.
/// </summary>
protected void VerifySpaRequest(IDotvvmRequestContext context, DotvvmView page)
{
if (context.IsSpaRequest)
{
var spaContentPlaceHolders = page.GetAllDescendants().OfType <SpaContentPlaceHolder>().ToList();
if (spaContentPlaceHolders.Count > 1)
{
throw new Exception("Multiple controls of type <dot:SpaContentPlaceHolder /> found on the page! This control can be used only once!"); // TODO: exception handling
}
if (spaContentPlaceHolders.Count == 0 || spaContentPlaceHolders[0].GetSpaContentPlaceHolderUniqueId() != context.GetSpaContentPlaceHolderUniqueId())
{
// the client has loaded different page which does not contain current SpaContentPlaceHolder - he needs to be redirected
context.RedirectToUrl(context.HttpContext.Request.Url.AbsoluteUri.Replace("/" + HostingConstants.SpaUrlIdentifier, ""));
}
}
}
protected override Task OnPageExceptionAsync(IDotvvmRequestContext context, Exception exception)
{
context.IsPageExceptionHandled = true;
context.RedirectToUrl("/error500");
return(Task.CompletedTask);
}