ELMAH and API controller in MVC4 not logging errors - asp.net-mvc

Question

Using an API controller in MVC4, when the controller action throws an exception, ELMAH does not log the error.
I think the problem is that MVC4 sets the HTTP status code to 500, and it returns the exception details in a JSON object, but it does not throw an unhandled exception so ELMAH never sees it.
How can I get ELMAH to capture all responses where the status code is not 200?

Answer 1

The anwser described before doesn't work. I've tried on my test server and received an error ("The given filter instance must implement one or more of the following filter interfaces: IAuthorizationFilter, IActionFilter, IResultFilter, IExceptionFilter.")
Then I realized what happened .... you are trying to add the custom filter to the MVC Global Filter (filters.Add(new ElmahHandledErrorLoggerFilter());)
To fix that, I've split the filter registration in GlobalFilter and HttpFilter
FilterConfig.cs
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new HandleErrorAttribute());
}
public static void RegisterHttpFilters(HttpFilterCollection filters)
{
filters.Add(new ElmahHandledErrorLoggerFilter());
}
Global.asax
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
FilterConfig.RegisterHttpFilters(GlobalConfiguration.Configuration.Filters);
;-)

Answer 2

UPDATE: This answer does not work in latest versions. Use julianox's answer.
Answer found from information here: http://www.asp.net/web-api/overview/web-api-routing-and-actions/exception-handling
Where the exception filter logs to elmah:
public class ElmahHandledErrorLoggerFilter : ExceptionFilterAttribute
{
public override void OnException(HttpActionExecutedContext actionExecutedContext)
{
base.OnException(actionExecutedContext);
ErrorSignal.FromCurrentContext().Raise(actionExecutedContext.Exception);
}
}
but you also have to add the error filter to the GlobalConfiguration filters:
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
GlobalConfiguration.Configuration.Filters.Add(new ElmahHandledErrorLoggerFilter());
filters.Add(new ElmahHandledErrorLoggerFilter());
filters.Add(new HandleErrorAttribute());
}