CODEWITHSUNDEEP
c#asp.net-mvcasp.net-mvc-4
Oliver
Oliver

Reputation: 11607

AddModelError for child objects?

I have a settings page on my site that uses these model classes:

public class NameVm
{
    public string GivenName { get; set; }
    public string FamilyName { get; set; }
}

public class PasswordVm
{
    public string OldPassword { get; set; }
    public string NewPassword { get; set; }
    public string ConfirmPassword { get; set; }
}

public class AccountVm
{
    public NameVm Name { get; set; }
    public PasswordVm Password { get; set; }
}

This is the controller:

public class AccountController : Controller
{
    [HttpGet]
    public override ActionResult Index()
    {
        var accountVm = AccountVmFromActiveUser();
        return View(accountVm);
    }

    [HttpPost]
    public ActionResult EditName(NameVm vm)
    {
        ...
    }

    [HttpPost]
    public ActionResult EditPassword(PasswordVm vm)
    {
        if (ModelState.IsValid)
        {
            if (!ValidateUser(this.ActiveUser, vm.OldPassword))
            {
                ModelState.AddModelError("????",
                    "Existing password is incorrect.");
            }
            else
                UpdateUserPassword(vm);
        }

        var accountVm = AccountVmFromActiveUser();
        accountVm.Password = vm;
        return View(accountVm);
    }
}

In my Account.cshtml file I define two forms - one that submits to EditName, one that submits to EditPassword. It's a big file, so here is a small excerpt:

@Html.EditorFor(model => model.Password.OldPassword)
@Html.ValidationFor(model => model.Password.OldPassword)

My question is: How do I get ValidationFor to display the error message I add in the EditPassword method? I tried using a key of "Password.OldPassword", but this didn't work.

Alternatively, am I taking the wrong approach here? How should I handle having two forms on the same page?

Upvotes: 0

Views: 664

Answers (1)

Marco
Marco

Reputation: 971

You can use Partial Views.

1) in Account.cshtml separate the form that submits passord and put it in a partial view _EditPassword.cshml (usually I put the partial views in Views\Shared folder)

use 

@Html.Partial("_EditPassword", @Model.Password)

to render the partial View in Account.cshtml

2) in the partial view _EditPassword.cshtml you can use 

@Html.EditorFor(model => model.OldPassword)
@Html.ValidationFor(model => model.OldPassword)

and you should see validation errors

Upvotes: 1

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