RainLab\User\Controllers\Users::preview_onActivate PHP Method

    public function preview_onActivate($recordId = null)
    {
        $model = $this->formFindModelObject($recordId);
        $model->attemptActivation($model->activation_code);
        Flash::success(Lang::get('rainlab.user::lang.users.activated_success'));
        if ($redirect = $this->makeRedirect('update-close', $model)) {
            return $redirect;
        }
    }