MVC3 binding querystring parameter to deep object property - asp.net

Question

My domain is setup similar to
public class Pagination
{
public int? Page { get; set; }
}
public class IndexViewModel
{
public Pagination Pagination { get; set; }
}
public class HomeController : Controller
{
public ActionResult Index(IndexViewModel model, Pagination pg, string page)
{
return View(model);
}
}
When I navigate to /?Page=5 I would expect 5 to be the value of model.Pagination.Page to be 5 also, however it appears MVC does not bind query parameters more than 1 layer deep.
What can do I do to change this?
Or is changing this setting up more trouble than it's worth? And I should just do
public class HomeController : Controller
{
public ActionResult Index(IndexViewModel model, Pagination pg, string page)
{
model.Pagination = pg;
return View(model);
}
}
*Note the triple parameters are there to illustrate that it won't fill IndexViewModel but it fills both of the other parameters since they're 0 or 1 layer deep.

Answer 1

Shouldn't your method signature be...
public ActionResult Index(int? page)
{
var model = new IndexViewModel{
Pagination = new Pagination { Page = page ?? 1 } };
if(page.HasValue)
model.Stuff = StuffGenerator
.GetStuff()
.Skip(page.Value * _pageSize)
.Take(_pageSize);
else
model.Stuff = StuffGenerator.GetStuff().take(_pageSize);
return View(model);
}
Your example sounds like a GET but looks like a POST.