Doctrine 2，最后在事务内插入自动增量键

Question

我创建并持久化（不刷新）数据以确保交易。但是->getId()返回NULL，而MySql最初可以在事务

中返回自动增量值

Answer 1

它将为null，但在Flush doctrine将正确处理所有关系。

For the most part, Doctrine 2 already takes care of proper transaction demarcation for you: All the write operations (INSERT/UPDATE/DELETE) are queued until EntityManager#flush() is invoked which wraps all of these changes in a single transaction.

在此处阅读更多内容：http://doctrine-orm.readthedocs.org/projects/doctrine-orm/en/latest/reference/transactions-and-concurrency.html