在 Laravel 6 的 Eloquent ORM 中使用数据库事务

1、在 Laravel 6 的 Eloquent ORM 中使用数据库事务。应用程序仅使用 PHP 7.0 及更高版本，因此将 \Exception 替换为 \Throwable。参考：https://stackoverflow.com/questions/49814785/how-can-i-use-transaction-with-eloquent-laravel-5-5

2、最终实现代码如下

            DB::beginTransaction();
            try {

                $themeInstallation = new ThemeInstallation();
                $themeInstallation->theme_store_theme_id = $saasThemeConfig[$name]['id'];
                $themeInstallation->theme_id = $name;
                $themeInstallation->wp_theme_id = $wpTheme->id;
                $themeInstallation->theme_custom_name = $custom_name;
                $themeInstallation->save();

                $themeInstallationVersion = new ThemeInstallationVersion();
                $themeInstallationVersion->theme_installation_id = $themeInstallation->id;
                $themeInstallationVersion->theme_store_theme_id = $saasThemeConfig[$name]['id'];
                $themeInstallationVersion->theme_store_theme_version_id = $saasThemeConfig[$name]['id'];
                $themeInstallationVersion->save();

                $themeInstallationTask = new ThemeInstallationTask();
                $themeInstallationTask->theme_installation_id = $themeInstallation->id;
                $themeInstallationTask->theme_installation_version_id = $themeInstallationVersion->id;
                $themeInstallationTask->theme_store_theme_version_id = $saasThemeConfig[$name]['id'];
                $themeInstallationTask->save();

                DB::commit();
            } catch(\Throwable $e) {
                DB::rollBack();
                throw $e;
            }

3、当特地让事务失败时，即让第 3 个模型中插入一个不存在的字段，事务回滚，确认 3 张表中皆未插入数据。如图1

{
    "message": "SQLSTATE[42S22]: Column not found: 1054 Unknown column 'theme_store_theme_version_id' in 'field list' (SQL: insert into `theme_installation_task` (`processing`, `processing_failed`, `step`, `message`, `theme_installation_id`, `theme_installation_version_id`, `theme_store_theme_version_id`, `updated_at`, `created_at`) values (1, 0, 1, , 1, 1, 9, 2022-05-17 17:39:35, 2022-05-17 17:39:35))",
    "code": "42S22",
    "status_code": 500,
    "debug": {
        "line": 669,
        "file": "\\.\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Connection.php",
        "class": "Illuminate\\Database\\QueryException",
        "trace": {
  }
    }
}

4、当事务成功后，确认 3 张表中皆已插入数据。