Castle Windsor IoC Container setup for ASP.NET MVC

README.markdown

Castle Windsor IoC Container setup for ASP.NET MVC

1. Create the following folder structure and files:

-- MyApp.Web (The MVC project)
---- PresentationLogic (folder)
------ Container (folder)
-------- BusinessLogicInstaller.cs
-------- ControllersInstaller.cs
-------- IocContainer.cs
-------- WindsorControllerFactory.cs

2. Add the contents of each file in this Gist to your app. Rename namespace to fit to your application.

3. Call IocContainer.Setup from Global.asax.cs. Example shown in this Gist.

That's it!

BusinessLogicInstaller.cs

using Castle.MicroKernel.Registration;
using Castle.MicroKernel.SubSystems.Configuration;
using Castle.Windsor;
using MyApp.BusinessLogic.Facades;

namespace MyApp.Web.PresentationLogic.Container
{
	public class BusinessLogicInstaller : IWindsorInstaller
	{
		public void Install(IWindsorContainer container, IConfigurationStore store)
		{
			container.Register(Component.For<IProductBusinessFacade>().ImplementedBy<ProductBusinessFacade>());
		}
	}
}

ControllersInstaller.cs

using Castle.MicroKernel.Registration;
using Castle.MicroKernel.SubSystems.Configuration;
using Castle.Windsor;

namespace MyApp.Web.PresentationLogic.Container
{
	public class ControllersInstaller : IWindsorInstaller
	{
		public void Install(IWindsorContainer container, IConfigurationStore store)
		{
			container.Register(AllTypes.FromThisAssembly()
				.Pick().If(t => t.Name.EndsWith("Controller"))
				.Configure(configurer => configurer.Named(configurer.Implementation.Name))
				.LifestylePerWebRequest());
		}
	} 
}

Global.asax.cs

void Application_Start(object sender, EventArgs e)
{
	AreaRegistration.RegisterAllAreas();

	RegisterGlobalFilters(GlobalFilters.Filters);
	RegisterRoutes(RouteTable.Routes);

        // Add this line to Application_Start in Global.asax.cs to setup the IoC Container.
	IocContainer.Setup();
}

IocContainer.cs

using System.Web.Mvc;
using Castle.Windsor;
using Castle.Windsor.Installer;

namespace MyApp.Web.PresentationLogic.Container
{
	public static class IocContainer
	{
		private static IWindsorContainer _container;

		public static void Setup()
		{
			_container = new WindsorContainer().Install(FromAssembly.This());

			WindsorControllerFactory controllerFactory = new WindsorControllerFactory(_container.Kernel);
			ControllerBuilder.Current.SetControllerFactory(controllerFactory);
		}
	}
}

WindsorControllerFactory.cs

using System;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using Castle.MicroKernel;

namespace MyApp.Web.PresentationLogic.Container
{
	public class WindsorControllerFactory : DefaultControllerFactory
	{
		private readonly IKernel _kernel;

		public WindsorControllerFactory(IKernel kernel)
		{
			this._kernel = kernel;
		}

		public override void ReleaseController(IController controller)
		{
			_kernel.ReleaseComponent(controller);
		}

		protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
		{
			if (controllerType == null)
			{
				throw new HttpException(404, string.Format("The controller for path '{0}' could not be found.", requestContext.HttpContext.Request.Path));
			}
			return (IController)_kernel.Resolve(controllerType);
		}
	}
}