CODEWITHSUNDEEP
c#asp.net-mvcentity-frameworkdrop-down-menu
Nathan McKaskle
Nathan McKaskle

Reputation: 3063

Get Submitted Data From Dropdown in View Model?

I have a people controller for user management and I'm trying to figure out how to get the dropdown choice when the user submits from the edit page. Whenever I hit submit on the page, none of the values from the view model seem to carry through to the post. I can't get the value they chose from the drop down to set the role.

See view model below:

public class PersonViewModel
{
    public int PersonId { get; set; }
    [Display(Name = "Full Name")]
    public string FullName { get; set; }
    public string Email { get; set; }
    [Display(Name = "Current Role")]
    public string SetRole { get; set; }
    public List<RoleListViewModel> Roles { get; set; }
}

See controller edit functions below: 

// GET: People/Edit/5
    public ActionResult Edit(int? id)
    {
        if (id == null)
        {
            return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
        }
        Person person = db.people.Find(id);
        if (person == null)
        {
            return HttpNotFound();
        }
        PersonViewModel pvm = new PersonViewModel();
        List<IdentityRole> roles = adb.Roles.ToList();
        var rlvm = new List<RoleListViewModel>();
        roles.ForEach(x => rlvm.Add(new RoleListViewModel { RoleId = x.Id, RoleName = x.Name }));
        pvm.PersonId = person.PersonId;
        pvm.FullName = person.FirstName + " " + person.LastName;
        pvm.Email = person.Email;
        pvm.Roles = rlvm;
        ViewBag.RoleList = new SelectList(rlvm, "RoleName", "RoleName", person.CurrentRole);

        return View(pvm);
    }

    // POST: People/Edit/5
    // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
    // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Edit(PersonViewModel pvm)
    {
        if (ModelState.IsValid)
        {
            db.Entry(pvm).State = EntityState.Modified;
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        var usr = new AccountController();
        var pers = db.people.Where(x => x.PersonId == pvm.PersonId).FirstOrDefault();
        usr.UserManager.AddToRoleAsync(pers.NetId, /* their choice should go here but how? */);
        db.SaveChanges();


        return View(pvm);
    }

Here is the cshtml:

    <div class="form-group">
        @Html.LabelFor(model => model.Roles, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="form-control-static">
            @Html.DropDownList("RoleList", null, new { @class = "form-control" })
            @Html.ValidationMessageFor(model => model.Roles, "", new { @class = "text-danger" })
        </div>
    </div>

Upvotes: 0

Views: 42

Answers (1)

Barry O&#39;Kane
Barry O&#39;Kane

Reputation: 1187

Make a variable in your View Model to store the selected value and then in the view use

@Html.DropDownListFor(m => m.SelectedRoleVariable, RolesSelectList, new { @class = "form-control" });

Upvotes: 1

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