I want to use remote validation to check to see if a Username exists. I am using a Viewmodel to create users. While I can do this to get validation for creation or editing purposes, it will not work for both creating and editing. Here is my model:
[Required]
[Display(Name = "Homeowner Username")]
[Remote("doesUserNameExist", "Homeowners", HttpMethod = "POST", ErrorMessage = "User name already exists. Please enter a different user name.", AdditionalFields = "InitialUsername")]
Here is my edit view:
@Html.Hidden("Homeowner.InitialUsername", Model.Username)
<div class="form-group">
@Html.LabelFor(model => model.Username, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Username, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Username, "", new { @class = "text-danger" })
</div>
</div>
Here is my controller in the version that works for registration but not editing(when editing, parameters are null):
public JsonResult doesUserNameExist([Bind(Prefix = "Homeowner.Username")]string Username, [Bind(Prefix = "InitialUsername")] string InitialUsername)
{
MY CODE
}
Here is my controller that works for editing but not creating(when creating, both parameters are null):
public JsonResult doesUserNameExist([Bind(Include = "Homeowner.Username")]string Username, [Bind(Include = "InitialUsername")] string InitialUsername)
{
MY CODE
}
I have tried many variations of this but just can't get it.
I have looked here: ASP.NET MVC Binding with Remote Validation
Here:
Remote ViewModel validation of nested objects not working
And here: http://forums.asp.net/t/1652512.aspx?Compound+View+Model+object+causing+remote+validation+failure
But I seem to be missing something. Is there a way I can make this work for both editing and registering? I am pretty new at this, and would greatly appreciate any ideas!
Edit:
Perhaps this is a poor design choice(first time using view models, only been coding a few months), but I was trying to create a new homeowner and address at the same time as when I create a new application user in that role. Here is the viewmodel I am using:
public class RegisterHomeownerViewModel
{
[Required]
[EmailAddress]
[Display(Name = "Email")]
public string Email { get; set; }
[Required]
[StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
[DataType(DataType.Password)]
[Display(Name = "Password")]
public string Password { get; set; }
[DataType(DataType.Password)]
[Display(Name = "Confirm password")]
[Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
public string ConfirmPassword { get; set; }
public int roles { get; set; }
public virtual Address Address { get; set; }
public virtual Homeowner Homeowner { get; set; }
}
Here is my method in the account controller:
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> RegisterHomeowner(RegisterHomeownerViewModel model, Address address, Homeowner homeowner)
{
ApplicationDbContext db = new ApplicationDbContext();
if (ModelState.IsValid)
{
var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
var result = await UserManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
var role = db.Roles.Find("0");
UserManager.AddToRole(user.Id, role.Name);
await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
db.Addresses.Add(address);
homeowner.UserId = user.Id;
homeowner.AddressID = address.ID;
db.Homeowners.Add(homeowner);
db.SaveChanges();
return RedirectToAction("Index", "Homeowners");
}
AddErrors(result);
}
return View(model);
}
Here is the view I am using to create those entities:
<div class="form-horizontal">
<h4>RegisterViewModel</h4>
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="form-group">
@Html.LabelFor(model => model.Homeowner.Username, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Homeowner.Username, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Homeowner.Username, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Email, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Email, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Email, "", new { @class = "text-danger" })
</div>
</div>
Everything does work as far as I can tell except for remote validation on Username. I can get it to give me an error when creating in the account method above, or I can get an error when editing by deleting the Prefix (which makes it so my Username is not recognized. There is obviously something I am doing wrong.
