ViewModel property doesn't bind into controller action parameter - asp.net-mvc

Question

My problem is that my ViewModel property doesn't bind into an action parameter.
I think it'll be more clear if i just give you my code.
I have a model as follows:
namespace Sima3.Models
{
using System;
using System.Collections.Generic;
public partial class Usuario
{
public string Login { get; set; }
public string NombreCompleto { get; set; }
public short Organigrama { get; set; }
public int Interno { get; set; }
public string EMail { get; set; }
}
}
And i added DataAnnotations to this partial class in another file (Because this model was generated automatically by EntityFramework), note the remote validation on Login property:
namespace Sima3.Models
{
[MetadataType(typeof(UsuarioMetaData))]
public partial class Usuario
{
}
public class UsuarioMetaData
{
[Display(Name = "Nombre de Usuario")]
[Remote("NoExisteUsuario", "Validation")]
[Required]
public string Login { get; set; }
[Display(Name = "Nombre y Apellido")]
[Required]
public string NombreCompleto { get; set; }
[Display(Name = "Sector")]
[Required]
public short Organigrama { get; set; }
[Required]
public int Interno { get; set; }
[EmailAddress]
[Required]
public string EMail { get; set; }
}
}
Now, i have a ViewModel wich contains a property of type Usuario and some other stuff needed to render my View:
namespace Sima3.ViewModels.PedidoViewModels
{
public class AgregarViewModel
{
public Usuario Usuario { get; set; }
public Pedido Pedido { get; set; }
public SelectList ListaSectores { get; set; }
public SelectList ListaEstados { get; set; }
public SelectList ListaPrioridades { get; set; }
public SelectList ListaTipos { get; set; }
public SelectList ListaDirecciones { get; set; }
}
}
And my view looks as follows (I'll only post part of it, if u need to see more let me know):
#using (Ajax.BeginForm("Crear", "Usuario", null,
new AjaxOptions
{
OnSuccess = "UsuarioCreadoSuccess",
HttpMethod = "Post"
}
, new { #class = "form-horizontal", id = "FormUsuario" }))
{
#Html.AntiForgeryToken()
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title title">Nuevo Usuario</h4>
</div>
<div class="modal-body">
#Html.ValidationSummary(true)
<div class="form-group">
#Html.LabelFor(model => model.Usuario.Login, new { #class = "col-lg-4 control-label" })
<div class="col-lg-7">
#Html.TextBoxFor(model => model.Usuario.Login, new { #class = "form-control"})
#Html.ValidationMessageFor(model => model.Usuario.Login)
</div>
</div>
Alright, the important part is the TextBoxFor, it renders me the next HTML:
<input class="form-control valid" data-val="true" data-val-remote="'Nombre de Usuario' is invalid." data-val-remote-additionalfields="*.Login" data-val-remote-url="/Validation/NoExisteUsuario" data-val-required="El campo Nombre de Usuario es obligatorio." id="Usuario_Login" name="Usuario.Login" type="text" value="">
As you see, the textbox name is: name="Usuario.Login"
And my controller action wich gets called by the Remote validation looks like this:
public JsonResult NoExisteUsuario([Bind(Prefix="Usuario")]string Login)
{
Usuario usuario = db.Usuarios.Find(Login);
if (usuario != null)
{
var MensajeDeError = string.Format("El usuario {0} ya existe", Login);
return Json(MensajeDeError, JsonRequestBehavior.AllowGet);
}
else
{
return Json(true, JsonRequestBehavior.AllowGet);
}
}
I set a breakpoint in this Action and it gets hit, but Login comes in null.
I checked with google chrome's debugger the http request header and it shows the form is getting submitted like this: Usuario.Login: asdasdasd.
The question is simple, how can i make it bind?
By the way, i'm using MVC5.
Thanks.

Answer 1

Well, i finally got it working, it seems i was setting the Prefix binding attribute wrongly.
Now my action looks like this:
public JsonResult NoExisteUsuario([Bind(Prefix="Usuario.Login")]string login)
{
Usuario usuario = db.Usuarios.Find(login);
if (usuario != null)
{
var MensajeDeError = string.Format("El usuario {0} ya existe", login);
return Json(MensajeDeError, JsonRequestBehavior.AllowGet);
}
else
{
return Json(true, JsonRequestBehavior.AllowGet);
}
}