public function actionActivation()
{
$activationHash = Yii::$app->request->get(self::HASH_PARAM_NAME);
$user = User::find()->where(['activation_hash' => $activationHash])->one();
if (!$user) {
throw new HttpException(400, Yii::t('app', 'Bad security code'));
}
$user->activation_hash = null;
$complete = $user->save(false);
$alert = \yii\bootstrap\Alert::widget(['options' => ['class' => 'alert-success'], 'body' => Yii::t('app', 'Activation finished successfully. You can log in now')]);
if ($complete) {
Yii::$app->getSession()->setFlash('successActivation', $alert);
}
return $this->render('activation', []);
}