custom fields

[srakl]

i have this in my actionRegister() which i extended the Da\User\Controller\RegistrationController

$this->on(FormEvent::EVENT_AFTER_REGISTER, function ($event) {
           $form = $event->getForm();
           $user = User::find()->where(['email' => $form->email])->one();
           $profile = $user->profile;
           $profile->firstname = $form->firstname;
           $profile->lastname = $form->lastname;
           if (!$profile->save()) {
                print_r($profile->getErrors()); die;
          }
       });

when registering, a new user the email, password_hash, auth_key, registered_ip and password_changed_at columns are filled.

The firstname and lastname is not stored in the profile table, and created_at in the user table is 0000-00-00 00:00:00

i added this to the user model

class User extends BaseUser
{
    public $firstname;
    public $lastname;
    ...
}

and this to the profile model

 class Profile extends BaseProfile
 {
    public $firstname;
    public $lastname;
    ...
 }

in both user and profiles models that i extended i have this

'firstnameLength' => ['firstname', 'string', 'max' => 255],
 'lastnameLength' => ['lastname', 'string', 'max' => 255],

i tried saving to firstname and lastname to profile table, and user table too. both failed. What am i missing? why doesn't save() work? i even tried save(false) too. Im not getting any errors. Please help. thanks