Question

Is there a quick method for intercepting all controller calls in MVC-3?

For logging and testing purposes, I’d like to build a tool that can intercept all controller calls, and log which controller was called, with which message, at what time.

Answer 1

I can’t remember where I got this from, but I was looking around for something similar a while back and found an article or something somewhere that contained this logging filter:

public class LogActionFilter : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        Log("OnActionExecuting", filterContext.RouteData);
    }

    public override void OnActionExecuted(ActionExecutedContext filterContext)
    {
        Log("OnActionExecuted", filterContext.RouteData);
    }

    public override void OnResultExecuting(ResultExecutingContext filterContext)
    {
        Log("OnResultExecuting", filterContext.RouteData);
    }

    public override void OnResultExecuted(ResultExecutedContext filterContext)
    {
        Log("OnResultExecuted", filterContext.RouteData);
    }

    private void Log(string methodName, RouteData routeData)
    {
        var controllerName = routeData.Values["controller"];
        var actionName = routeData.Values["action"];
        var message = string.Format("{0} controller: {1} action: {2}", methodName, controllerName, actionName);
        Debug.WriteLine(message, "Action Filter Log");
    }
}

To use it, just add it to the global filters in global.asax:

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
    filters.Add(new HandleErrorAttribute());
    filters.Add(new LogActionFilter());
}

I’ll have a look now to see if I can find the source.

Edit: Found it. It was from this question.