Question

我正在尝试使用Laravel 5.3创建一个演示文稿。我写了一个控制器的方法来处理更新。此方法应始终启动事务，并始终回滚更改。因此，更改永远不会提交到数据库中。

以下是我的方法的样子

public function update($id, Request $request)
{
    DB::beginTransaction();
    $this->affirm($request);
    $biography = Biography::findOrFail($id);
    $data = $request->all();
    $biography->update($data);

    Session::flash('success_message', 'Biography was updated! However, because this is a demo the records are not persisted to the database.');
    DB::rollBack();

    return redirect()->route('demo.index');
}

不幸的是，每次都会提交更新。如何正确开始事务然后回滚更改？

Answer 1

如果提交之前的代码抛出异常，您可以回滚。

public function update($id, Request $request)
{
DB::beginTransaction();
try{
$this->affirm($request);
$biography = Biography::findOrFail($id);
$data = $request->all();
$biography->update($data);

Session::flash('success_message', 'Biography was updated! However, because this is a demo the records are not persisted to the database.');
//if there is not error/exception in the above code, it'll commit
DB::commit();
return redirect()->route('demo.index');
} catch(\Exception $e){
//if there is an error/exception in the above code before commit, it'll rollback
DB::rollBack();
return $e->getMessage();
}

}

你可以查看answer 这是documentation about transactions

如何在Laravel 5.3中回滚事务？

1 个答案: