Why aren't model errors showing in partial view in MVC?

Question

I am working on MVC-4 application. I have 2 action in 2 different controller like:

Parent

Public ActionResult Detail(int id)
{
  var p = parent.GetById(id);
  ViewBag.Child = TempData["Child"];
  return View(p);
}

Child

Public ActionResult Create(Child child)
{
  if(ModelState.IsValid)
  {
   //code save to db
  }
  TempData["Child"] = child;
  return RedirectToAction("Detail", "Parent", new { id = child.ParentId });
}

I have a parent view and a partial child view. Child view renders inside parent view (Child view contains a form to create new child for parent). When user add new child, we send child data to child controller's create action and after successful save we return user to the same parent from where he/she added the child. For this reason we redirect the user to parent controller's detail action. And if any validation error occur than also we redirect to parent controller's detail action but this time we save the child object inside TempData to keep modelstate error.

My parent detail view is :

.....
......

@if (ViewBag.Child == null)
{
    Html.RenderPartial("_AddChildPartial", new ViewDataDictionary { { "parentId", Model.Id } });
}
else
{
    Html.RenderPartial("_AddChildPartial", ViewBag.Child as xxxx.Models.Child);
}

Here i am first check whether the viewbag contains child object if yes than we pass that child obejct to _AddChildPartial view.To show the model error and data which user filled in the form.The data shows successfully but the model error are not showing.

Can anybody please tell me what i doing wrong here, why model errors are now showing in _AddChildPartial View ?

stun · Accepted Answer · 2013-04-26 05:56:21Z

3

TempData["Child"] = child;

You are not storing the full Model State (i.e., validation error information).
You are only storing your Child object's POST values.

Read the POST REDIRECT GET pattern from Kazi Manzur Rashid's blog post.
It'll solve your problem easily.

answered Apr 26, 2013 at 5:56

stun

1,7443 gold badges17 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Why aren't model errors showing in partial view in MVC?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related