yii2/framework/rest/DeleteAction.php

<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\rest;

use Yii;
use yii\db\ActiveRecord;

/**
 * DeleteAction implements the API endpoint for deleting a model.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @since 2.0
 */
class DeleteAction extends Action
{
    /**
     * @var boolean whether to start a DB transaction when deleting the model.
     */
    public $transactional = true;

    /**
     * Deletes a model.
     */
    public function run($id)
    {
        $model = $this->findModel($id);

        if ($this->checkAccess) {
            call_user_func($this->checkAccess, $this->id, $model);
        }

        if ($this->transactional && $model instanceof ActiveRecord) {
            $transaction = $model->getDb()->beginTransaction();
            try {
                $model->delete();
                $transaction->commit();
            } catch (\Exception $e) {
                $transaction->rollback();
                throw $e;
            }
        } else {
            $model->delete();
        }

        Yii::$app->getResponse()->setStatusCode(204);
    }
}