Ninject with custom attribute and filter

I am implementing a custom credit check filter for a controller action. I use Ninject as my Ioc container. First, create a action filter and implement IActionFilter interface, implement the OnActionExecuted() and OnActionExecuting() methods. Within the credit checking functions, it needs a CreditService to check against the repository and database. So I have created the parameterized constructor using Ninject to inject the CreditService object.

 public class CreditCheckFilter : IActionFilter
        private ICreditService _creditService { get; set; }

        public CreditCheckFilter(ICreditService myService)
            _creditService = myService;

        public void OnActionExecuted(ActionExecutedContext filterContext)


        public void OnActionExecuting(ActionExecutingContext filterContext)
            var userName = filterContext.HttpContext.User.Identity.Name;
            var bal = _creditService.GetTokenBalance(WebSecurity.GetUserId(userName));
            if (bal <= 0)
                RouteValueDictionary redirectTargetDictionary = new RouteValueDictionary();
                redirectTargetDictionary.Add("action", "GetTokens");
                redirectTargetDictionary.Add("controller", "Account");
                filterContext.Result = new RedirectToRouteResult(redirectTargetDictionary);

Now Let’s create a CreditCheckAttribute that implements FilterAttribute, this is the attribute we put against the controller action,

    public class CreditCheckAttribute : FilterAttribute { }

Now, we need to use Ninject BindFilter() method to bind our CreditCheckFilter, when a controller action has the attribute CreditCheckAttribute. In the ninject kernel, do this,

            kernel.BindFilter(FilterScope.Action, 0).WhenActionMethodHas();

The last step is to put CreditCheckAttribute() against the controller action,

        public ActionResult Playlist(TestViewModel model)
            return View(model);

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