Symfony2（beta5）1：M / M：形式为1

Question

我有实体“创意”和实体“问题”...当我有从Creative到Question的ManyToMany关系时，我可以轻松地执行$ builder-＆gt; add（'questions'），它会抓住所有问题并将它们放在多选中并插入到creative_question中。好吧，我需要为creative_question设置一个新的字段（位置），所以我必须创建一个OneToMany / ManyToOne关系。但是当我添加字段（$ builder-＆gt; add（'creativeQuestions'））时，多选是空白的，它似乎试图查询creative_question来填充它..这是错误的。我需要填充问题并将其插入到creative_question中。

无论如何，这是我的代码：

## Creative.php

[...]

/**
 * @ORM\Column(type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="IDENTITY")
 */
protected $id;

/**
 * @ORM\ManyToOne(targetEntity="Offer", cascade={"persist"})
 */
protected $offer;

/**
 * @ORM\OneToMany(targetEntity="CreativeQuestion", mappedBy="creative", cascade={"persist"})
 */
protected $creativeQuestions;

[...]

---

## CreativeQuestion.php

[...]

/**
 * @ORM\Column(type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="IDENTITY")
 */
protected $id;

/**
 * @ORM\ManyToOne(targetEntity="Creative", cascade={"persist"})
 */
protected $creative;

/**
 * @ORM\ManyToOne(targetEntity="Question", cascade={"persist"})
 */
protected $question;

/**
 * @ORM\Column(type="integer")
 */
protected $pos;

[...]

---

## CreativeType.php

[...]

public function buildForm(FormBuilder $builder, array $options)
{
    $builder
        ->add('name')
        ->add('title')
        ->add('description')
        ->add('body')
        ->add('script')
        ->add('creativeQuestions') // how do i populate list with "Questions" then insert into creative_question?
        ->add('active');
}

public function getDefaultOptions(array $options)
{
    return array(
        'data_class' => 'JStout\MainBundle\Entity\Creative'
    );
}

[...]

---

## In My Controller:

 /**
 * @Extra\Route("/offer/{offerId}/creative", name="admin_offer_creative")
 * @Extra\Route("/offer/{offerId}/creative/{creativeId}", name="admin_offer_creative_edit")
 * @Extra\Template()
 */
public function creativeAction($offerId = null, $creativeId = null)
{
    // Get Offer
    $offer = $this->_getObject('Offer', $offerId);

    if (null === $offer->getId()) throw new NotFoundHttpException('The page you requested does not exist!');

    // Get Creative
    $creative = $this->_getObject('Creative', $creativeId);

    // Set offer to creative
    $creative->setOffer($offer);

    // Get form and handler
    $form = $this->get('form.factory')->create(new Form\CreativeType(), $creative);
    $formHandler = $this->get('form.handler')->create(new Form\CreativeHandler(), $form);

    [...]
}

protected function _getObject($entityName, $id = null)
{
    // Find object
    if (null !== $id) {
        if (!$object = $this->get('doctrine')->getEntityManager()->find('ZGOffersMainBundle:' . $entityName, $id)) {
            throw new NotFoundHttpException('The page you requested does not exist!');
        }

        return $object;
    }

    // Initialize new object
    $entityName = 'JStout\MainBundle\Entity\\' . $entityName;
    if (class_exists($entityName)) {
        return new $entityName();
    }

    throw new NotFoundHttpException('The page you requested does not exist!');
}

[...]

同样，当我删除CreativeQuestion并且只使用ManyToMany关系进行提问时，我需要的是什么：

但是，理想情况下，我希望能够（通过jquery）通过从下拉框中选择添加问题，然后拖放以定位问题。 jquery的定位很简单，我只是不知道如何添加我想要的问题。如果我至少可以让多重选择工作，那么我可以前进，但我现在有点卡住了！

任何人都可以通过Symfony2（beta5）获得这个目标吗？