Use Eloquent Accessors and Mutators

// app/Models/User.php
namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

class User extends Model
{
    use HasFactory;

    protected $fillable = ['first_name', 'last_name', 'email', 'password'];

    // Accessor for full_name
    public function getFullNameAttribute()
    {
        return "{$this->first_name} {$this->last_name}";
    }

    // Mutator for first_name (capitalize)
    public function setFirstNameAttribute($value)
    {
        $this->attributes['first_name'] = Str::title($value);
    }

    // Mutator for password (hash)
    public function setPasswordAttribute($value)
    {
        $this->attributes['password'] = bcrypt($value);
    }

    // Example Usage
    // $user = User::find(1);
    // echo $user->full_name; // Accesses accessor

    // $user = new User();
    // $user->first_name = 'john'; // Mutator called
    // $user->last_name = 'doe';
    // $user->password = 'secret'; // Mutator called
    // $user->save();
}