MVC 4 ViewModel not being sent back to Controller

Question

I can\'t seem to figure out how to send back the entire ViewModel to the controller to the \'Validate and Save\' function.

Here is my controller:

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Answer 1

Can you just combine those 2 models you have? Here's how I do it with one model per view... 1. I use Display Templates from view to view so I can pass the whole model as well as leave data encrypted.. 2. Setup your main view like this...

@model IEnumerable
 
Select a Location:


@foreach (var item in Model)
{           
    @Html.DisplayFor(model=>item)
}

3. Create a DisplayTemplates folder in shared. Create a view, naming it like your model your want to pass because a DisplayFor looks for the display template named after the model your using, I call mine GroupModel. Think of a display template as an object instance of your enumeration. Groupmodel Looks like this, I'm simply assigning a group to a button.

@model LecExamRes.Models.SelectionModel.GroupModel
@using LecExamRes.Helpers
@using (Html.BeginForm("Index", "Home", null, FormMethod.Post))
{
 

    @Html.AntiForgeryToken()
    @Html.EncryptedHiddenFor(model => model.GroupKey)
    @Html.EncryptedHiddenFor(model => model.GroupName)
     

         
     
   
 
}       

4. Here's the Controller. *GET & POST *

public ActionResult Index()
    {
        // Create a new Patron object upon user's first visit to the page.
        _patron = new Patron((WindowsIdentity)User.Identity);
        Session["patron"] = _patron;            
        var lstGroups = new List();
        var rMgr = new DataStoreManager.ResourceManager();
        // GetResourceGroups will return an empty list if no resource groups where    found.
        var resGroups = rMgr.GetResourceGroups();
        // Add the available resource groups to list.
        foreach (var resource in resGroups)
        {
            var group = new SelectionModel.GroupModel();
            rMgr.GetResourcesByGroup(resource.Key);
            group.GroupName = resource.Value;
            group.GroupKey = resource.Key;
            lstGroups.Add(group);
        }
        return View(lstGroups);
    }

    [ValidateAntiForgeryToken]
    [HttpPost]
    public ActionResult Index(SelectionModel.GroupModel item)
    {
        if (!ModelState.IsValid)
            return View();

        if (item.GroupKey != null && item.GroupName != null)
        {               
            var rModel = new SelectionModel.ReserveModel
            {
                LocationKey = item.GroupKey,
                Location = item.GroupName
            };

            Session["rModel"] = rModel;
        }           
//So now my date model will have Group info in session ready to use
        return RedirectToAction("Date", "Home");
   }

5. Now if I've got alot of Views with different models, I typically use a model related to the view and then a session obj that grabs data from each model so in the end I've got data to submit.