safekat/ci4/app/Entities/Usuarios/UsersEntity.php

<?php
namespace App\Entities\Usuarios;

use CodeIgniter\Shield\Entities\User;

class UsersEntity extends User
{
    protected $attributes = [
        "first_name" => null,
        "last_name" => null
    ];
    protected $casts = [

    ];

    public function getFullName()
    {
        $firstName = trim($this->attributes["first_name"] ?? "");
        $lastName = trim($this->attributes["last_name"] ?? "");
        $fullName = $firstName . ' ' . $lastName;
        $fullName = trim($fullName);  // In case first name is empty, this will remove the leading space

        // Use the username attribute if the full name is still empty after trimming
        return $fullName ?: $this->attributes["username"];
    }


}