frontend\modules\topic\controllers\CommentController::actionDelete PHP Method

    public function actionDelete($id)
    {
        $model = PostComment::findComment($id);
        if (!$model->isCurrent()) {
            throw new NotFoundHttpException();
        }
        // 事物 暂时数据库类型不支持 无效
        $transaction = \Yii::$app->db->beginTransaction();
        $updateComment = $model->updateCounters(['status' => -1]);
        $updateNotify = Notification::updateAll(['status' => 0], ['comment_id' => $model->id]);
        $updateTopic = Topic::updateAllCounters(['comment_count' => -1], ['id' => $model->post_id]);
        if ($updateNotify && $updateComment && $updateTopic) {
            $transaction->commit();
        } else {
            $transaction->rollback();
        }
        return $this->redirect(['/topic/default/view', 'id' => $model->post_id]);
    }