public function getUser()
{
if ($this->_user !== false) {
return $this->_user;
}
if (!($username = \Yii::$app->request->get(static::REQUEST_PARAM_USERNAME))) {
$this->_user = null;
return false;
}
$userClass = \Yii::$app->user->identityClass;
$this->_user = $userClass::find()->where(["username" => $username, 'active' => Cms::BOOL_Y])->one();
return $this->_user;
}