Is there a builtin way of filling up values in the Model from cookies?

Let's say I curre开发者_运维问答ntly have a Controller with the following Action:

    public ActionResult Index() {

        return View();
    }

I'd like to know if instead of this, I could have something like

    public ActionResult Index(MyModel model) {

        return View();
    }

where the model is in some way already filled up with data stored in the cookies.

You could write a custom model binder which will fill the view model from cookies:

public class MyModelCookiesModelBinder : DefaultModelBinder
{
    public override object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
    {
        var cookie = controllerContext.HttpContext.Request.Cookies["someCookie"];
        MyModel myModel = GetModelFromCookie(cookie);
        return myModel;
    }

    private MyModel GetModelFromCookie(HttpCookie cookie)
    {
        // TODO:
        throw new NotImplementedException();
    }
}

then register it in Application_Start:

ModelBinders.Binders.Add(typeof(MyModel), new MyModelCookiesModelBinder());

and finally you could have:

public ActionResult Index(MyModel model) 
{
    return View();
}

where the model will be populated from the cookie.

Nope. It would have to be a [HttpPost] action.

[HttpPost]
public ActionResult Index(MyModel model)
{
 ...
 ...
 ...
}

As far as I know, [HttpGet], which is the default if you don't specify an attribute, can only take simple value types.

public ActionResult Index(int id)
{
     MyModel model = dataLayer.getModel(id);
     return View(model);

}