public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultExecutionDelegate next)
{
// 3.
if (_deleteCookie)
{
DeleteCookies(context);
await next();
return;
}
// We don't have any alerts
if (_alerts.Count == 0)
{
await next();
return;
}
// The controller action didn't return a view result so no need to continue execution
if (!(context.Result is ViewResult result))
{
await next();
return;
}
// Check early to ensure we are working with a LayoutViewModel
if (!(result.Model is LayoutViewModel model))
{
await next();
return;
}
// Add alerts to alerts zone within layout view model
if (context.Controller is Controller controller)
{
var updater = await _layoutUpdater.GetLayoutAsync(controller);
await updater.UpdateLayoutAsync(async layout =>
{
layout.Alerts = await updater.UpdateZoneAsync(layout.Alerts, zone =>
{
foreach (var alert in _alerts)
{
zone.Add(new AlertCompiledView(alert));
}
});
return(layout);
});
}
// We've displayed our alert so delete persistence
// to ensure no further alerts are displayed
DeleteCookies(context);
// Finally execute the controller result
await next();
}
public async Task OnActionExecutingAsync(ResultExecutingContext context)
{
// Add our trace view to the layout
// It's important to add this after the layout has rendered
// This allows all queries to execute before rendering the trace list
if (context.Controller is Controller controller)
{
var updater = await _layoutUpdater.GetLayoutAsync(controller);
await updater.UpdateLayoutAsync(async layout =>
{
layout.LayoutAfter = await updater.UpdateZoneAsync(layout.LayoutAfter, zone =>
{
zone.Add(new LayoutZoneView("DbTraceList", new {}).Order(int.MaxValue));
});
return(layout);
});
}
}
