Separate url ID and HttpPost

Question

Is it possible to separate the ID in a URL (Home/Index/ 10 ) from a form submit that uses HttpPost and pass them to a controller?

Further explaination

A code example could be:

[HttpPost]
public ActionResult Index(int id, CustomerInfo info)
{
    /*
     * Code
     */

    Return View();
}

CustomerInfo is an object which in this case would contain an int called "ID" and other customer related info.

If I submit a form and want to pass a CustomerInfo ID and a url parameter id both the url id and CustomerInfo.id will be the CustomerInfo id which I passed from the form. If I don't pass a CustomerInfo ID they both will be the url parameter id.

Simply looking at the url id in the controller isn't an option as I need to check if an ID is given in CustomerInfo or not.

I understand that I can just give the CustomerInfo ID another name (eg. CustomerInfoID) but would like to know if I can keep the url parameter id and the CustomerInfo ID the same names.

In the image above you'll see my issue. I did NOT provide an ID for CustomerInfo.ID. It simply passed it to there from the url parameter id when I submit my form. I want the ID of CustomerInfo to be empty when I don't provide one.

Answer 1

If you want to send both things you need to abstract it out by building a view-model thus:

public class ViewModel()
{
   public CustomerInfo info {get; set;}
   public int id {get; set;}
}

Send this to your view instead of CustomerInfo

[HttpGet]
public ActionResult Index()
{
   ViewModel vm = new ViewModel()
   {
      info = info,
      id = 0
   }

   return View(vm);
   //changed from below:
   //return View(info);
}

Anything in your view that references CustomerInfo does this via the view-model now, for example:

@Html.TextBoxFor(t => t.InfoText)

is now

@Html.TextBoxFor(t => t.info.InfoText)
...

Accept it in your post argument:

[HttpPost]
public ActionResult Index(ViewModel viewModel)
{

    /*
     * Code
     */
    int id = viewModel.id;
    CustomerInfo info = viewModel.info;
    Return View();
}