ASP.NET MVC: post-redirect-get pattern, with two overloaded action methods

Question

Is it possible to implement post-redirect-get pattern, with two overloaded action methods (One for GET action and the other for POST action) in asp.net-mvc.

In all of the MVC post-redirect-get pattern samples, I have seen three different action methods for the post-redirect-get process (corresponding to Initial Get, Post, and the Redirection Get), each having different names. Is this really required to have minimum three action methods with different names, in asp.net-mvc?

For Eg: (Does the code shown below, follows Post-Redirect-Get pattern?)

public class SomeController : Controller
{
    // GET: /SomeIndex/
    [HttpGet]
    public ActionResult Index(int id)
    {
        SomeIndexViewModel vm = new SomeIndexViewModel(id) { myid = id };
        //Do some processing here
        return View(vm);
    }

    // POST: /SomeIndex/
    [HttpPost]
    public ActionResult Index(SomeIndexViewModel vm)
    {
        bool validationsuccess = false;
        //validate
        if (validationsuccess)
            return RedirectToAction("Index", new {id=1234 });
        else
            return View(vm);
        }
    }
}

Thank you for your responses.

Answer 1

Think from the unit-testing perspective.

If everything was in a single action, then code would be quite difficult to test and read. I see no problems in your code what so ever.

Answer 2

Your code seems fine to me. Follows the pattern and this is how we do it in all of our projects.

Answer 3

If you have the same name for the action then you should separate which action is GET and which is POST. Also, your method signature must be different to avoid a compilation error.

Both of these "requirements" are okay in your code, so there is no problem using those actions in the PRG.