MVC model conflict using partial class and Validate - asp.net-mvc

Question

I have a page containing a form and a partial view (containing a form too).
both model have 1 (or more) properties with the same name. when I validate the first form, the value and validation message is duplicate on the second form.
I create a little sample with dummy entities.
person.cs
public partial class Person : IValidatableObject
{
[Required(ErrorMessage = "name required")]
public string Name { get; set; }
public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
var results = new List<ValidationResult>();
if (Name == "admin") //just example
{
results.Add(new ValidationResult("You cant be admin.", new[] { "Title", "Name" }));
}
return results;
}
}
Person/Index.cshtml
#model Person
#{
ViewBag.Title = "Person";
Layout = "~/Views/Shared/_Layout.cshtml";
}
#using (Html.BeginForm("Index", "Person", FormMethod.Post, new { id = "CreatePersonForm" }))
{
#Html.AntiForgeryToken()
#Html.DisplayNameFor(model => model.Name)
#Html.ValidationMessageFor(model => model.Name, "", new { #class = "text-danger" })
#Html.EditorFor(model => model.Name, new { htmlAttributes = new { #class = "form-control" } })
<input type="submit" value="Save" class="btn btn-default" />
}
#Html.Partial("~/Views/Dog/Index.cshtml", new Dog())
#section Scripts {
#Scripts.Render("~/bundles/jqueryval")
}
PersonController.cs
public class PersonController : Controller
{
// GET: Person
public ActionResult Index()
{
return View();
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Index([Bind(Include = "Name")] Person person)
{
if (ModelState.IsValid)
{
return RedirectToAction("Index");
}
return View(person);
}
}
I made a partial view practically the same.
Dog.cs
public partial class Dog : IValidatableObject
{
[Required(ErrorMessage = "name required")]
public string Name { get; set; }
public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
var results = new List<ValidationResult>();
if (Name == "admin") //just example
{
results.Add(new ValidationResult("You cant be admin.", new[] { "Title", "Name" }));
}
return results;
}
}
Dog/Index.cshtml
#model Dog
#{
ViewBag.Title = "Dog Page";
}
#using (Html.BeginForm("Index", "Dog", FormMethod.Post, new { id = "CreateDogForm" }))
{
#Html.AntiForgeryToken()
#Html.DisplayNameFor(model => model.Name)
#Html.ValidationMessageFor(model => model.Name, "", new { #class = "text-danger" })
#Html.EditorFor(model => model.Name, new { htmlAttributes = new { #class = "form-control" } })
<input type="submit" value="Save" class="btn btn-default" />
}
#section Scripts {
#Scripts.Render("~/bundles/jqueryval")
}
DogController.cs
public class DogController : Controller
{
// GET: Dog
public ActionResult Index()
{
return View();
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Index([Bind(Include = "Name")] Dog dog)
{
if (ModelState.IsValid)
{
return RedirectToAction("Index");
}
return View(dog);
}
}
if you start /Person/Index, if you write admin in the first textbox (person form), after posting (save) the second form (dog form) have the same text and validation than the first form.

Answer 1

The #Html.EditorFor by default uses the property name as the id and name of the generated HTML, and the validation uses these values to set the error messages! You can pass a value to overwrite that default behavior in your partial view as following:
#Html.ValidationMessageFor(model => model.Name, "", new { #class = "text-danger", #data_valmsg_for="partial_name" })
#Html.EditorFor(model => model.Name, new { htmlAttributes = new { #class = "form-control", #id="partial_name" } })