symfony2學說堅持后如何更新OneToMany實體？

Question

我得到兩個實體。 首先是具有OneToMany關聯的：

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;
}

這是第二次，它反轉了ManyToOne的關系：

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;
}

我想這樣保存實體：

$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實體沒有更新，在學問查詢日志中，我看到MarketLanguage實體在與MarketMain保持連接后沒有關系。 而且請不要說我必須在設置持久性之前設置MarketLanguage名稱，因為我必須在該名稱中添加刷新ID。

這是查詢（來自原則日志），在第二次刷新時執行更新：

"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（）; 您正在創建新實例，因此

$marketMain->getMarketLanguage() 

將返回空數組，也許您應該從數據庫中查詢所有MarketLanguages，然后將它們分配給MarketMain？

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

編輯：

所以試試這個：

$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

看起來問題是由於MarketLanguage ID是固定的，原因如下：

private $marketId = 0;

請重試，不設置= 0

編輯：由於您使用“無” ID生成策略，您必須手動為您的MarketLanguage實體分配ID。 見文件