Registration form - custom User fields triggering 'required' validation error

[latearrival]

I'm new to CI4 & to Myth/Auth. I've tried to follow these instructions for adding three custom User fields (first_name, last_name, mobile_phone) to the user registration function: https://github.com/lonnieezell/myth-auth/blob/develop/docs/extending.md

I'm having trouble with the validation of these custom fields. When I submit the form with the three new fields completed, the 'field is required' validation message is displayed for all three of these fields (e.g. "First Name is required"). It's as if the $_POST variables from the View are not available to the Model.

I've spent a day on this, but I can't work out what is going on. Any ideas on what I need to check for?

Here's my code...

My version of AuthController with the attemptRegister method so that I could change the email and password validation messages:

<?php namespace App\Controllers;

use CodeIgniter\Controller;
use CodeIgniter\Session\Session;
use Myth\Auth\Config\Auth as AuthConfig;
use App\Entities\User;
use App\Models\UserModel;
use Myth\Auth\Controllers\AuthController as MythController;

class AuthController extends MythController
{

	public function attemptRegister()
	{
		// Check if registration is allowed
		if (! $this->config->allowRegistration)
		{
			return redirect()->back()->withInput()->with('error', lang('Auth.registerDisabled'));
		}

		$users = model(UserModel::class);

		// Validate email first because password validation depends on email
		$rules = [
			'email' => [
				'label'  => 'Work Email Address',
				'rules'  => 'required|valid_email|is_unique[users.email,id,{id}]',
				'errors' => [
					'required' => '{field} is required',
					'valid_email' => '{field} doesn\'t appear to be a valid email address',
					'is_unique' => 'This email address is already registered',
				],
			],

		];

		if (! $this->validate($rules))
		{
			return redirect()->back()->withInput()->with('errors', $this->validator->getErrors());
		}

etc

Snippet from my version of the View register.php, showing the three new fields:

  <div class="form-group">
      <label for="first_name">First Name</label>
      <input type="text" class="form-control <?php if(session('errors.first_name')) : ?>is-invalid<?php endif ?>"
             name="first_name" placeholder="First Name" value="<?= old('first_name') ?>">
  </div>

  <div class="form-group">
      <label for="last_name">Last Name</label>
      <input type="text" class="form-control <?php if(session('errors.last_name')) : ?>is-invalid<?php endif ?>"
             name="last_name" placeholder="Last Name" value="<?= old('last_name') ?>">
  </div>

  <div class="form-group">
      <label for="mobile_phone">Mobile Phone Number</label>
      <input type="phone" class="form-control <?php if(session('errors.mobile_phone')) : ?>is-invalid<?php endif ?>" name="mobile_phone" placeholder="Mobile Phone Number" value="<?= old('mobile_phone') ?>">
  </div>

My version of UserModel, with the three new fields in $allowedFIelds and $validationRules:

<?php namespace App\Models;

use Myth\Auth\Models\UserModel as MythModel;

class UserModel extends MythModel
{

    protected $returnType = 'App\Entities\User';

    protected $useSoftDeletes = false;

    protected $allowedFields = [
        'email','password_hash', 'reset_hash', 'reset_at', 'reset_expires', 'activate_hash',
        'status', 'status_message', 'active', 'force_pass_reset', 'permissions', 'deleted_at',
        'first_name','last_name','mobile_phone'
    ];

    protected $validationRules = [
        'first_name' => [
            'label'  => 'First Name',
            'rules'  => 'required',
            'errors' => [
                'required' => '{field} is required',
            ],
        ],

        'last_name' => [
            'label'  => 'Last Name',
            'rules'  => 'required',
            'errors' => [
                'required' => '{field} is required',
            ],
        ], 
        
        'mobile_phone' => [
            'label'  => 'Mobile Phone Number',
            'rules'  => 'required',
            'errors' => [
                'required' => '{field} is required',
            ],
        ],

    ];

}

My version of the User entity, with a getName method:

<?php namespace App\Entities;

use Myth\Auth\Entities\User as MythUser;

class User extends MythUser
{

	/**
	 * Returns a full name: "first last"
	 *
	 * @return string
	 */
	public function getName()
	{
		return trim(trim($this->attributes['first_name']) . ' ' . trim($this->attributes['last_name']));
	}
    
}

[latearrival]

OK, I solved this.

I had to add the three new fields to the $validFields array in app/Config/Auth.php. This step wasn't mentioned in https://github.com/lonnieezell/myth-auth/blob/develop/docs/extending.md

<?php namespace Config;

use CodeIgniter\Config\BaseConfig;

class Auth extends \Myth\Auth\Config\Auth
{
	
    public $validFields = [
           'email',
	   'first_name',
	   'last_name',
	   'mobile_phone',
   ];

etc

}