Doctrine - 向实体添加默认时间戳，如 NOW()

Doctrine - Add default time stamp to entity like NOW()(Doctrine - 向实体添加默认时间戳，如 NOW())

问题描述

遵循 Doctrine 指南，我了解如何为实体设置默认值，但如果我想要日期/时间戳怎么办?

Following the Doctrine guidelines I understand how to set a default value for an Entity, but what if I wanted a date/time stamp?

• http://docs.doctrine-project.org/projects/doctrine-orm/en/2.1/reference/faq.html

我的问题是我的数据库在一个字段上有一个默认值 NOW() 但是当我使用 Doctrine 插入记录时，值是空或空白，但插入的其余部分发生了.

My problem is my database has a default of NOW() on a field but when I use Doctrine to insert a record the values are null or blank but the rest of the insert happened.

此外，由于 Doctrine 说要将默认值声明为常量，这也会产生问题.

Also since Doctrine says to declare the default as a const, this also creates a problem.

建议?

推荐答案

好的，我找到了解决方案:

Ok I found the solution:

• https://doctrine-orm.readthedocs.org/en/latest/reference/php-mapping.html?highlight=callback
• http://doctrine-orm.readthedocs.org/en/latest/reference/events.html#lifecycle-events

prePersist 选项就是我正在做的.

The prePersist option is what I'm doing.

确保在注释中定义

<?php

/** @Entity 
 *  @HasLifecycleCallbacks 
 */
class User

这是他们提供的功能示例

and here is the function example they offer

/** 
 *  @PrePersist 
 */
public function doStuffOnPrePersist()
{
    $this->createdAt = date('Y-m-d H:i:s');
}

如果你像我一样使用 ORM

And if you're using ORM like I am

<?php

/** @ORMEntity 
 *  @ORMHasLifecycleCallbacks 
 */
class User

这是他们提供的功能示例

and here is the function example they offer

/** 
 *  @ORMPrePersist 
 */
public function doStuffOnPrePersist()
{
    $this->createdAt = date('Y-m-d H:i:s');
}

这篇关于Doctrine - 向实体添加默认时间戳，如 NOW()的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！