ConferenceController.cs

public class ConferenceController : Controller
{
    private readonly ISession _session;

    public ConferenceController(ISession session)
    {
        _session = session;
    }

    public ActionResult Index(int? minSessions)
    {
        minSessions = minSessions ?? 0;

        var list = (from conf in _session.Query<Conference>()
            where conf.SessionCount >= minSessions
            select new ConferenceListModel
            {
                Id = conf.Id,
                Name = conf.Name,
                SessionCount = conf.SessionCount,
                AttendeeCount = conf.AttendeeCount
            }).ToArray();

        return View(list);
    }

    public ViewResult Show(string eventName)
    {
        var conf = _session
            .Query<Conference>()
            .SingleOrDefault(c => c.Name == eventName);

        var model = new ConferenceShowModel
        {
            Name = conf.Name,
            Sessions = conf.GetSessions()
                .Select(s => new ConferenceShowModel.SessionModel
                {
                    Title = s.Title,
                    SpeakerFirstName = s.Speaker.FirstName,
                    SpeakerLastName = s.Speaker.LastName,
                }).ToArray()
        };

        return View(model);
    }

    public ActionResult Edit(string eventName)
    {
        var conf = _session
            .Query<Conference>()
            .SingleOrDefault(c => c.Name == eventName);

        var model = new ConferenceEditModel
        {
            Id = conf.Id,
            Name = conf.Name,
            Attendees = conf.GetAttendees()
                .Select(a => new ConferenceEditModel.AttendeeEditModel
                {
                    Id = a.Id,
                    FirstName = a.FirstName,
                    LastName = a.LastName,
                    Email = a.Email,
                }).ToArray()
        };

        return View(model);
    }


    [HttpPost]
    public ActionResult Edit(ConferenceEditModel form)
    {
        if (!ModelState.IsValid)
        {
            return View(form);
        }

        var conf = _session.Get<Conference>(form.Id);

        conf.ChangeName(form.Name);

        foreach (var attendeeEditModel in form.Attendees)
        {
            var attendee = conf.GetAttendee(attendeeEditModel.Id);

            attendee.ChangeName(attendeeEditModel.FirstName, attendeeEditModel.LastName);
            attendee.Email = attendeeEditModel.Email;
        }

        return this.RedirectToAction(c => c.Index(null), "Default");
    }
}