MVC 3 Dependency Injection with Ninject 2.2 + Global Action Filter

Question

I am trying to use ASP.NET MVC 3 and Ninject 2.2 to insert a registrar object into a custom ActionFilterAttribute attribute.

I can make this work if I tag each controller with a user attribute.

However, I cannot get this to work if I remove the attribute decoration from the controllers and try to use a global action filter.

Here is the code:

in App_Start - NinjectMVC3.cs

using NinjectTest.Abstract; using NinjectTest.Concrete; [assembly: WebActivator.PreApplicationStartMethod(typeof(NinjectTest.App_Start.NinjectMVC3), "Start")] [assembly: WebActivator.ApplicationShutdownMethodAttribute(typeof(NinjectTest.App_Start.NinjectMVC3), "Stop")] namespace NinjectTest.App_Start { using Microsoft.Web.Infrastructure.DynamicModuleHelper; using Ninject; using Ninject.Web.Mvc; public static class NinjectMVC3 { private static readonly Bootstrapper bootstrapper = new Bootstrapper(); /// <summary> /// Starts the application /// </summary> public static void Start() { DynamicModuleUtility.RegisterModule(typeof(OnePerRequestModule)); bootstrapper.Initialize(CreateKernel); } /// <summary> /// Stops the application. /// </summary> public static void Stop() { bootstrapper.ShutDown(); } /// <summary> /// Creates the kernel that will manage your application. /// </summary> /// <returns>The created kernel.</returns> private static IKernel CreateKernel() { var kernel = new StandardKernel(); RegisterServices(kernel); return kernel; } /// <summary> /// Load your modules or register your services here! /// </summary> /// <param name="kernel">The kernel.</param> private static void RegisterServices(IKernel kernel) { kernel.Bind<ILogger>().To<Log4NetLogger>(); } } 

}

Global.asax.cs

 using System.Web.Routing; using NinjectTest.Attributes; namespace NinjectTest { public class MvcApplication : HttpApplication { public static void RegisterGlobalFilters(GlobalFilterCollection filters) { filters.Add(new TestLoggingAttribute()); filters.Add(new HandleErrorAttribute()); } public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults ); } protected void Application_Start() { log4net.Config.XmlConfigurator.Configure(); AreaRegistration.RegisterAllAreas(); RegisterGlobalFilters(GlobalFilters.Filters); RegisterRoutes(RouteTable.Routes); } } 

}

TestLoggingAttribute.cs

 using System.Web.Mvc; using Ninject; using NinjectTest.Abstract; namespace NinjectTest.Attributes { public class TestLoggingAttribute : ActionFilterAttribute { [Inject] public ILogger _logger { get; set; } public override void OnActionExecuted(ActionExecutedContext filterContext) { var controller = filterContext.RouteData.Values["controller"]; var action = filterContext.RouteData.Values["action"]; _logger.Info("controller: " + controller + " action: " + action); base.OnActionExecuted(filterContext); } } } 

HomeController.cs

 using System.Web.Mvc; using NinjectTest.Attributes; namespace NinjectTest.Controllers { //[TestLogging] public class HomeController : Controller { public ActionResult Index() { ViewBag.Message = "Welcome to ASP.NET MVC!"; return View(); } public ActionResult About() { return View(); } } } 

As I said, if I uncomment the [TestLogging] attribute in the controller, it all works. However, I want to use a global filter. Can someone help me?

Answer 1

You can find the following blog post . Therefore, in your RegisterServices method, it’s simple:

 private static void RegisterServices(IKernel kernel) { kernel.Bind<ILogger>().To<Log4NetLogger>(); kernel.BindFilter<TestLoggingAttribute>(FilterScope.Global, 0); } 

and bring the BindFilter extension BindFilter into scope do not forget to add the correct using directive:

 using Ninject.Web.Mvc.FilterBindingSyntax;