symfony2学说坚持后如何更新OneToMany实体？

Question

我得到两个实体。 首先是具有OneToMany关联的：

class MarketMain
{
    /**
     * @var integer
     *
     * @ORM\Column(name="id", type="bigint", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="IDENTITY")
     */
    private $id;

    /**
     * @var \Doctrine\Common\Collections\Collection
     *
     * @ORM\OneToMany(targetEntity="\Acme\CMSBundle\Entity\MarketLanguage", mappedBy="marketMain", indexBy="langId", cascade="all", orphanRemoval=true, fetch="EXTRA_LAZY")
     */
    private $marketLanguage;
}

这是第二次，它反转了ManyToOne的关系：

class MarketLanguage
{
    /**
     * @var integer
     *
     * @ORM\Column(name="market_id", type="integer", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="NONE")
     */
    private $marketId = 0;

    /**
     * @var integer
     *
     * @ORM\Id
     * @ORM\Column(name="lang_id", type="integer", nullable=false)
     */
    private $langId = 1;

    /**
     * @var string
     *
     * @ORM\Column(name="name", type="string", length=200, nullable=true)
     */
    private $name;

    /**
     * @var \Acme\CMSBundle\Entity\MarketMain
     *
     * @ORM\ManyToOne(targetEntity="\Acme\CMSBundle\Entity\MarketMain", inversedBy="marketLanguage")
     * @ORM\JoinColumn(name="market_id", referencedColumnName="id")
     */
    private $marketMain;
}

我想这样保存实体：

$em = $this->getDoctrine()->getManager();

$marketMain = new MarketMain();
$marketLanguage = new ArrayCollection();
$marketLanguage->set(1,new MarketLanguage());
$marketLanguage->set(2,new MarketLanguage());
$marketLanguage->set(3,new MarketLanguage());
$marketMain->setMarketLanguage($marketLanguage);

foreach ($marketMain->getMarketLanguage() as $market_language)
{
$market_language->setMarketMain($marketMain);
}
$em->persist($marketMain);
$em->flush();

foreach ($marketMain->getMarketLanguage() as $market_language)
{
   $market_language->setName("Default name for MarketMain entity id:".$marketMain->getId());
}
$em->flush();

但是在第二次刷新后，我的MarketLanguage实体没有更新，在学问查询日志中，我看到MarketLanguage实体在与MarketMain保持连接后没有关系。 而且请不要说我必须在设置持久性之前设置MarketLanguage名称，因为我必须在该名称中添加刷新ID。

这是查询（来自原则日志），在第二次刷新时执行更新：

"START TRANSACTION" [] []
UPDATE market_language SET name = ? WHERE market_id = ? AND lang_id = ? ["Default name for MarketMain entity 15",0,"1"] []
"COMMIT" [] []

Answer 1

$ marketMain =新的MarketMain（）; 您正在创建新实例，因此

$marketMain->getMarketLanguage() 

将返回空数组，也许您应该从数据库中查询所有MarketLanguages，然后将它们分配给MarketMain？

$langs = $em->getRepositiory('Bundle:MarketLanguage')->findAll()
foreach ($langs as $market_language)
  {
     $market_language->setMarketMain($marketMain);
  }
$em->persist($marketMain);
$em->flush();

编辑：

所以试试这个：

$ml1 = new MarketLanguage();
$ml2 = new MarketLanguage();
$ml3 = new MarketLanguage();
$marketLanguage->set(1,$ml1);
$marketLanguage->set(2,$ml2);
$marketLanguage->set(3,$ml3);
$marketMain->setMarketLanguage($marketLanguage);

foreach ($marketMain->getMarketLanguage() as $market_language)
{
$market_language->setMarketMain($marketMain);
}
$em->persist($marketMain);

$em->persist($ml1);
$em->persist($ml2);
$em->persist($ml3);
$em->flush();

Answer 2

看起来问题是由于MarketLanguage ID是固定的，原因如下：

private $marketId = 0;

请重试，不设置= 0

编辑：由于您使用“无” ID生成策略，您必须手动为您的MarketLanguage实体分配ID。 见文件