Automapper one to one mapping - model-view-controller

Question

I have working solution, but a bit doubt if I made it correctly. I have base class from which derive 3 other classes Ad:
public class Ad
{
public int Id { get; set; }
public string Title { get; set; }
public Address Address { get; set; }
}
My Address class look like this:
public class Address
{
[ForeignKey("Ad")]
public int AddressId { get; set; }
public string Street { get; set; }
public string City { get; set; }
public string ZipCode { get; set; }
public virtual Ad Ad { get; set; }
}
Now I'm using automapper with this mapping:
Mapper.Initialize(config =>
{
config.CreateMap<Auto, AutoViewModel>()
.ForMember(m => m.City, vm => vm.MapFrom(m => m.Address.City))
.ForMember(m => m.Street, vm => vm.MapFrom(m => m.Address.Street))
.ForMember(m => m.ZipCode, vm => vm.MapFrom(m => m.Address.ZipCode)).ReverseMap();
});
Where AutoViewModel looks like this:
public class AutoViewModel
{
public int Id { get; set; }
public string Title { get; set; }
public string Street { get; set; }
public string City { get; set; }
public string ZipCode { get; set; }
}
In my Create and Edit actions I use this binding:
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Edit(int id, AutoViewModel vm)
{
Address address = new Address();
address.AddressId = vm.Id;
address.City = vm.City;
address.Street = vm.Street;
address.ZipCode = vm.ZipCode;
var auto = Mapper.Map<Auto>(vm);
auto.Address = address;
if (id != auto.Id)
{
return NotFound();
}
if (ModelState.IsValid)
{
try
{
_context.Update(auto);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!AutoExists(auto.Id))
{
return NotFound();
}
else
{
throw;
}
}
return RedirectToAction("Index");
}
return View(auto);
}
Is this way correct? Is there elegant way to do it? I had to specify AddressId explicit because otherwise I'm getting duplicate Foreign key error message...