Fortune Codes

An Autofac bootstrapper for ASP.NET MVC with property injection

2009-06-01T20:29:00.001-07:00

   1: public class FakeOrderRepository : IOrderRepository

   2: {

   3:     private readonly List<Order> _orders;

4:

   5:     public FakeOrderRepository (List<Order> orders)

   6:     {

   7:         _orders = orders;

   8:     }

9:

  10:     public IQueryable<Order> GetOrders ()

  11:     {

  12:         return _orders.AsQueryable ();

  13:     }

  14: }

   1: public static class Bootstrapper

   2: {

   3:     public static IContainerProvider ConfigureAutofac ()

   4:     {

   5:         var builder = new ContainerBuilder ();

6:

   7:         // Register a logger service which will get injected as a property after object construction (ex: public ILogger Log { get; set; })

   8:         builder.Register<Log4NetLogger> ().As<ILogger> ().OnActivating (ActivatingHandler.InjectProperties).SingletonScoped ();

9:

  10:         builder.Register<MailerService> ().As<IMailerService> ().FactoryScoped ();

11:

  12:         // Example of passing in named constructor parameters

  13:         // I registered a fake repository here to get a quick prototype up and running of of the checkout process

  14:         List<Order> orders = FakeRepositoryData.CreateOrders ();

  15:         builder.Register<FakeOrderRepository> ().WithArguments (new NamedParameter ("orders", orders)).As<IOrderRepository> ().FactoryScoped ();

16:

  17:         // Attach the ActivatingHandler to our controller module so that ILogger will get injected on our asp.net mvc controllers as well

  18:         AutofacControllerModule autofacControllerModule = new AutofacControllerModule (Assembly.GetExecutingAssembly ());

  19:         autofacControllerModule.ActivatingHandler += ActivatingHandler.InjectProperties;

  20:         builder.RegisterModule (autofacControllerModule);

21:

  22:         IContainerProvider containerProvider = new ContainerProvider (builder.Build ());

  23:         ControllerBuilder.Current.SetControllerFactory (new AutofacControllerFactory (containerProvider));

24:

  25:         return containerProvider;

  26:     }

  27: }

An ASP.NET MVC helper for calling Autofac Resolve

2008-11-26T16:08:00.000-08:00

   1: // Typical Autofac integration with ASP.NET MVC   2: public class MvcApplication : System.Web.HttpApplication, IContainerProviderAccessor   3: {   4:         public IContainerProvider ContainerProvider   5:         {   6:             get   7:             {   8:                 return _containerProvider;   9:             }  10:         }  11: }  12:    13: // Our Resolve Extension Method  14: public static class AutofacHelper  15: {  16:     public static T Resolve <T> (this HttpContext source)  17:     {  18:         IContainerProviderAccessor cpa = (IContainerProviderAccessor)source.ApplicationInstance;  19:         return cpa.ContainerProvider.RequestContainer.Resolve<T> ();  20:     }  21: }  22:    23: // Resolving easy-mode  24: ICustomerService customerService = HttpContext.Current.Resolve<ICustomerService> ();  25:    26: // Example code-behind  27: public partial class Site : System.Web.Mvc.ViewMasterPage  28: {  29:     protected string GetUserName ()  30:     {  31:         if (Request.IsAuthenticated)  32:         {  33:             ICustomerService customerService = HttpContext.Current.Resolve<ICustomerService> ();  34:             Customer customer = customerService.GetCustomer (HttpContext.Current.User.Identity.Name);  35:             if (customer != null && customer.IsRegistered)  36:             {  37:                 return customer.FirstName + " " + customer.LastName;  38:             }  39:         }  40:    41:         return string.Empty;  42:     }  43: }