How do I resolve Dependency Injection in MVC Filter attributes

Question

I have a custom attribute class derived from AuthorizationAttribute, which performs custom security on controller actions. The OnAuthorizationCore method depends on various othe

Answer 1

I would seem that the easiest way to achieve this is to bite the bullet and accept a dependency on autofac itself. While a dependency on the IoC is in itself an anti-pattern, it's somewhat more pallatable. You can implement a property as follows:

public class UserAuthorizeAttribute : AuthorizeAttribute
{            
    public IUserRepository CurrentUserService
    {
        get
        {
            var cpa = (IContainerProviderAccessor)HttpContext.Current.ApplicationInstance;
            var cp = cpa.ContainerProvider;
            return cp.RequestLifetime.Resolve();
        }
    }
}
     ...