public function actionDelete($id = null)
    {
        $model = User::find()->where(['id' => $id])->limit(1)->one();
        if (empty($model)) {
            $this->error(Yii::t('podium/flash', 'Sorry! We can not find Member with this ID.'));
            return $this->redirect(['admin/members']);
        }
        if ($model->id == User::loggedId()) {
            $this->error(Yii::t('podium/flash', 'Sorry! You can not delete your own account.'));
            return $this->redirect(['admin/members']);
        }
        if ($model->delete()) {
            PodiumCache::clearAfter('userDelete');
            Activity::deleteUser($model->id);
            Log::info('User deleted', $model->id, __METHOD__);
            $this->success(Yii::t('podium/flash', 'User has been deleted.'));
        } else {
            Log::error('Error while deleting user', $model->id, __METHOD__);
            $this->error(Yii::t('podium/flash', 'Sorry! There was some error while deleting the user.'));
        }
        return $this->redirect(['admin/members']);
    }