原则HasLifecycleCallbacks PrePersist | PreUpdate不会触发 [英] Doctrine HasLifecycleCallbacks PrePersist|PreUpdate don't fire

问题描述

我正在将教义2与ZF2和教义模块一起使用。
我编写了一个需要PreUpdate | PrePersist的实体，因为Doctrine不允许在主键中使用
Date | Datetime：

I'm using Doctrine 2 with ZF2 and the Doctrine-Module. I've written an Entity that needs a PreUpdate|PrePersist, because Doctrine doesn't allow Date|Datetime in a primary key:

<?php

namespace Application\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 *
 * @ORM\Entity
 * @ORM\HasLifecycleCallbacks
 * @ORM\Table(name="sample")
 */
class Sample
{

    /**
     *
     * @ORM\Id
     * @ORM\Column(type="string")
     * @var integer
     */
    protected $runmode;

    /**
     *
     * @ORM\Id
     * @ORM\Column(type="date")
     * @var DateTime
     */
    protected $date;


    public function getRunmode()
    {
        return $this->runmode;
    }

    public function setRunmode($runmode)
    {
        $this->runmode = $runmode;
        return $this;
    }

    public function getDate()
    {
        return $this->date;
    }

    public function setDate($date)
    {
        $this->date = $date;
        return $this;
    }

    /**
     *
     * @ORM\PreUpdate
     * @ORM\PrePersist
     */
    protected function formatDate()
    {
        die('preUpdate, prePersist');
        if ($this->date instanceof \DateTime) {
            $this->date = $this->date->format('Y-m-d');
        }
        return $this;
    }

}

现在的问题是，如果我将DateTime设置为Date我收到消息：

The Problem is now, if i set a DateTime as a Date I get the message:

"Object of class DateTime could not be converted to string"

因为它没有进入formatDate。

because it doesn't walk into the formatDate.

推荐答案

首先，由于您将字段 Sample＃date 映射为 datetime ，则应始终为 null 或 DateTime 的实例。

First of all, since you mapped the field Sample#date as datetime, it should always be either null or an instance of DateTime.

因此，您应该键入 setDate 方法，如下所示：

Therefore, you should typehint your setDate method as following:

public function setDate(\DateTime $date = null)
{
    $this->date = $date;
    return $this;
}

此外，您的的可见性，未调用project.org/projects/doctrine-orm/zh-CN/latest/reference/events.html#lifecycle-events rel = noreferrer>生命周期回调 formatDate 受保护，因此ORM无法访问。将其更改为 public 即可使用。无论如何，都无需进行任何转换，因此您可以摆脱它。

Also, your lifecycle callback is not invoked because the visibility of method formatDate is protected, therefore not accessible by the ORM. Change it into public and it will work. No conversion should be necessary anyway, so you can get rid of it.

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