gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using BBAdmin.Models;
using BBAdmin.DataAccess.DataHandler;
using BBAdmin.DataAccess;
using BBAdmin.Models.ViewModels;

namespace BBAdmin.Site.Controllers {

	public abstract class PolyController<T> : Controller
		where T : SalesObject {

		public ActionResult Index() {
			List<T> viewItems;

			using(bb8Entities db = new bb8Entities()) {
				viewItems = ObjectHandler.GetList<T>(740, db);
			}

			SalesObjectIndexModel model = new SalesObjectIndexModel(null, null, viewItems);

			return View(model);
		}

		public abstract ISalesObjectHandler ObjectHandler { get; }
	}

	public class FooController : PolyController<Accessory> {

		private FooAccessoryHandler _handler = new FooAccessoryHandler();

		public override ISalesObjectHandler ObjectHandler {
			get { return _handler; }
		}

		public ActionResult FooSpecific() {
			return Json(new { id = 0 });
		}
	}

	public class FooAccessoryHandler : SalesObjectHandler, ISalesObjectHandler {
		public List<T> GetList<T>(int customerId, bb8Entities db) where T : SalesObject {
			return base.GetList<T>(740, 7, "", PagingOptions.Default(), db, Populate);
		}

		private Accessory Populate(SalesObjectGetResult sogr) {
			return new Accessory();
		}
	}

	public interface ISalesObjectHandler {
		List<T> GetList<T>(int customerId, bb8Entities db) where T : SalesObject;
	}
}