ASP NET MVC 3: Form doesn't POST due to a required hidden field

Question

I want to submit a form, but the button isn't clickable. After some search I found out that this is due to the jquery validation that ASP.NET MVC has for required fields. For some weird reason ASP NET thinks my hidden field "UserId" is required. Which isn't actually true. See part of my model here:

   public class ResetPasswordModel
   {

        [.....]

     public Guid UserId
     {
       get;
       set;
     }

   }

And the page source shows this:

<input data-val="true" data-val-required="The UserId field is required." id="UserId" name="UserId" type="hidden" value="" />

Any ideas?!?

Answer 1

Are you sure there isn't a separate partial class containing MetaData which has marked the field as mandatory?

Something like this:

class UserResetPasswordModelMetaData
{
    [Required(ErrorMessage = "The UserId field is required.")]
    public Guid UserId { get; set; }
}

Search your project for the string "The UserId field is required". I bet it's there somewhere.

Also, how do you identify the user who is trying to reset their password, if not by their id?

Answer 2

setup the jQuery validator to ignore hidden fields. Like so:

jQuery Validate Ignore elements with style

Answer 3

Probably There is a Key attribute on top of UserId property which means it's mandatory

Answer 4

The fact it's not a nullable type means it's required. Change the definition to Guid? (include the question mark to make it nullable) Or even better create a viewmodel that doesn't have it.

Answer 5

I believe that a Guid is required by default because it is not nullable. Guids are usually primary keys so making them nullable is problematic. Try converting your guid ToString() so that you can use it in your view, then back to a Guid before using it in your controller or model. You may have to create a ViewModel in order to do this.