Question

我在徽章和请求之间有多对多的单向关联，如下所示：

徽章：

<?php

namespace Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * Device
 *
 * @ORM\Table(name="badges")
 * @ORM\Entity
 */
class Badges
{
    /**
     * Unidirectional - Many users have Many favorite comments (OWNING SIDE)
     *
     * @var \Doctrine\Common\Collections\Collection
     *
     * @ORM\ManyToMany(targetEntity="Entity\Request", cascade={"persist"})
     */
    private $invite;

}

Request实体没什么特别之处，因为这是一个简单的单向关联

添加关联很好。

但是在删除关联时我正在这样做：

    $em = $this->CI->doctrine->em;

    //Get badges for new notifs
    $badges = $user->getBadges();

    if( $badges )
    {
        $invites = $badges->getInvite();
        if ( $invites )
        {
            foreach ( $invites as $key => $invite )
            {
                $badges->removeInvite( $invite );
            }
        }

        $em->persist( $badges );
        $em->flush();
    }
    else
    {
        return false;
    }

但它不起作用并为我试图从徽章中分离的每个邀请带来此错误消息：

     遇到PHP错误

严重性：通知

消息：未定义的索引：   000000005ede1b52000000009e09e897

文件名：   ORM / UnitOfWork.php

行号：2739



     遇到PHP错误

严重性：警告

消息：array_pop（）需要参数1   是数组，null给定

文件名：   Persisters / ManyToManyPersister.php

行号：143

现在，如果我只从Badge中删除一个请求：

            $invites = $badges->getInvite();
            if ( $invites )
            {
                foreach ( $invites as $key => $invite )
                {
                    if( !empty( $invite ) ) {
                        $badges->removeInvite( $invite );
                        $em->persist( $invite );
                        $em->persist( $badges );
                        break;
                    }
                }
            }

我明白了：

<b>Fatal error</b>: Uncaught exception 'Doctrine\ORM\ORMInvalidArgumentException' with message 'A new entity was found through the relationship 'Entity\Badges#invite' that was not configured to cascade persist operations for entity: Entity\Request@000000007c08aa8800000000c42081b4. To solve this issue: Either explicitly call EntityManager#persist() on this unknown entity or configure cascade persist this association in the mapping for example @ManyToOne(..,cascade={"persist"}). If you cannot find out which entity causes the problem implement 'Entity\Request#__toString()' to get a clue.' in /var/www/meetmyfriends-dev/application/libraries/Doctrine/ORM/ORMInvalidArgumentException.php:59

请注意，我已在此错误消息中指定了持久请求（实体\徽章#custom是实体\请求）

为什么会这样？我该怎么做才能解决这个问题？我只是想从徽章中删除邀请以删除协会。

由于

编辑：这是徽章的实现#removeInvite Method＆amp;徽章#addInvite方法：

    /**
     * Add invite
     *
     * @param \Entity\Request $invite
     * @return Badges
     */
    public function addInvite(\Entity\Request $invite)
    {
        $this->invite[] = $invite;

        return $this;
    }

    /**
     * Remove invite
     *
     * @param \Entity\Request $invite
     */
    public function removeInvite(\Entity\Request $invite)
    {
        $this->invite->removeElement($invite);
    }

Answer 1

试试这个：

foreach ( $invites as $key => $invite )
            {
                if(!empty($invite)){
                    $badges->removeInvite( $invite );
                }
            }

如何删除与Doctrine 2的单向多对多关联

1 个答案: