public function updateUser($id, $username, $email, $role)
{
$user = $this->getById($id);
if (!$user) {
return false;
}
$user->username = $username;
$user->email = $email;
$user->role = $role;
$user->save();
if ($user->save()) {
return $user;
} else {
return false;
}
}