6


我有很多这种类型的关系,但我不明白为什么这种关系不起作用。
我有一个委托和一个促销实体:
委托

晋升

    /**
 * Company\CBundle\Entity\Promotion
 * 
 * @ORM\Entity
 * @DoctrineAssert\UniqueEntity("promotionCode")
 */
class Promotion
{
    const REGISTER_DAYS = 30;
    const REGISTER_DISCOUNT = 100;

    /**
     * @var integer $id
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(name="promotionCode", type="string", unique=true, nullable=true)
     */
    protected $promotionCode;

    /**
     * @ORM\Column(name="name", type="string")
     */
    protected $name;

    /**
     * @ORM\Column(name="description", type="string", nullable=true)
     */
    protected $description;

    /**
     * @ORM\Column(name="days", type="integer")
     */
    protected $days;

    /**
     * @ORM\Column(name="discount", type="float")
     */
    protected $discount;

    /**
     * @ORM\ManyToOne(targetEntity="Delegation", inversedBy="promotions")
     * @ORM\JoinColumn(name="delegation_id", referencedColumnName="id")
     */
    private $delegation;

    /**
     * @ORM\ManyToOne(targetEntity="Product", inversedBy="promotions")
     */
    private $product;

    /**
     * @var date $adquiredDate
     *
     * @ORM\Column(name="adquiredDate", type="date", nullable=true)
     */
    private $adquiredDate;

当我在控制器中创建促销时,表 Promotion 具有与委托相关的新对象

private function createPromotion($delegation)
{
    $em = $this->getDoctrine()->getEntityManager();
    $promotion = Promotion::createPromotion($delegacion, Promotion::REGISTER_DAYS, Promotion::REGISTER_DISCOUNT);
    $em->persist($promotion);
    $em->persist($delegation);

    $em->flush();
}

数据库

*************************** 15. row ***************************
           id: 32
delegation_id: 19
         days: 20
     discount: 50
 adquiredDate: 2013-01-10

*************************** 16. row ***************************
           id: 33
delegation_id: 19
         days: 25
     discount: 50
 adquiredDate: 2013-01-10
*************************** 17. row ***************************
           id: 34
delegation_id: 19
         days: 30
     discount: 50
 adquiredDate: 2013-01-10

但是当我在另一个控制器/动作中调用 $delegation->getPromotions() 时,没有促销,返回一个没有数据的 Doctrine\ORM\PersistentCollection。

有人可以帮忙吗?


编辑更多信息。$delegation->getPromotions() 是空的,但是寻找该委托的提升并调用 $promotion->getDelegation() 正在正确地返回委托:?

4

2 回答 2

5

您是否尝试过定义您的 $delegation 属性,例如

/**
 * @ORM\ManyToOne(targetEntity="Delegation", inversedBy="promotions")
 * @ORM\JoinColumn(name="delegation_id", referencedColumnName="id")
 */
private $delegation;

请参阅Doctrine2 文档:关联映射->多对一


您的代码中还有很多错别字。例如

/**
 * @ORM\OneToMany(targetEntity="Promotion", mappedBy="delegacion", cascade={"all"}, orphanRemoval=true)
 */
protected $promotions;

mappedBy="delegacion"应该是mappedBy="delegation"

或者

public function getDeleTacion()
{
    return $this->deleTacion;
}

应该

public function getDelegation()
{
    return $this->delegation;
}

编辑

好的,我为你创建了一个对我有用的简约版本。您可以从那里构建它或观察与您的代码的差异:

促销.php

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class Promotion
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\ManyToOne(targetEntity="Delegation", inversedBy="promotions", cascade={"persist"})
     * @ORM\JoinColumn(name="delegation_id", referencedColumnName="id")
     */
    public $delegation;

    /**
     * @ORM\ManyToOne(targetEntity="Product", inversedBy="promotions", cascade={"persist"})
     * @ORM\JoinColumn(name="product_id", referencedColumnName="id")
     */
    public $product;
}

委托.php

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class Delegation
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\OneToMany(targetEntity="Promotion", mappedBy="delegation", cascade={"all"}, orphanRemoval=true)
     */
    public $promotions;

    public function __construct() {
        $this->promotions = new \Doctrine\Common\Collections\ArrayCollection();
    }
}

产品.php

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class Product
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\OneToMany(targetEntity="Promotion", mappedBy="product", cascade={"all"}, orphanRemoval=true)
     */
    public $promotions;

    public function __construct() {
        $this->promotions = new \Doctrine\Common\Collections\ArrayCollection();
    }
}

如果你现在做类似的事情

$delegation = new Delegation();
$product = new Product();
$promotion = new Promotion();
$promotion->delegation = $delegation;
$promotion->product = $product;

$em->persist($promotion);
$em->flush();

$products = $em->createQuery('select p from BundleName\Entity\Product p')->execute();
$delegations = $em->createQuery('select d from BundleName\Entity\Delegation d')->execute();

var_dump(count($products[0]->promotions), count($delegations[0]->promotions));

你应该最终得到

int(1)
int(1)

所以引用实际上被保存并且可以读取。呸。祝你好运!:-)

于 2013-01-10T15:58:53.603 回答
3

我有一个类似的错误,我在一些新创建的实体上的多对一关系包含实体,而反向一对多没有,尽管数据库中显然有相应的行。

我确实在一对多方面坚持并刷新实体,但我也必须这样做 

$entityManager->clear();

在再次从存储库中获取这些实体以使一对多关系能够访问这些实体之前。

于 2019-03-01T11:01:05.097 回答