Partially updating object with EF Code First and ASP.NET MVC

Question

EF4.1-Code-First-Gurus!

I wonder if there is a more elegant way to handle the following ASP.NET MVC 3 EF 4.1 Code First scenario: Lets say we have the following POCOs:

Answer 1

Yes there is more elegant version:

public void Update(Person person, params Expression<Func<Person,object>>[] properties)
{
    context.People.Attach(person);

    DbEntityEntry<Person> entry = context.Entry(person);

    foreach (var property in properties)
    {
        entry.Property(property).IsModified = true;
    }

    person.ModifiedOn = DateTime.Now;
}

You will call the method this way:

[HttpPost]
public ActionResult Edit(Person person)
{
    if (ModelState.IsValid) 
    {

        personRepository.Update(person, p => p.FirstName, 
            p => p.LastName, p => p.Birthday);
        personRepository.Save();
        return RedirectToAction("Index");
    } 
    else 
    {
        return View(person);
    }
}