从 symfony 2.3.8 嵌入 - 当allow_add为true时为空

我尝试以嵌入形式保存新数据（当我修改时，它可以正常工作），但allow_add不起作用。

当我发送数据抛出原型输入时，请求->请求是：

ads[adsCapPublisher][new_created_0][publisher]:2302
ads[adsCapPublisher][new_created_0][dailyLimit]:2
ads[adsCapPublisher][edit_0][publisher]: 5201
ads[adsCapPublisher][edit_0][dailyLimit]: 5

edit_0 处理得很好，并使用 AdsCapPublisherType 创建了 AdsType，但是当我添加新输入时会抛出 javascript，处理数据时会在 $request->handleRequest() 中失败：

Catchable fatal error: Argument 1 passed to addAdsCapPublisher() must be an instance of AdsCapPublisher, null given in Ads.php on line 721

数据为空。当我将allow_add 设置为 false 时，编辑实体处理良好，但新闻返回表单错误：

this form should not contain extra fields

这是我的课程：

Ads.php

class Ads{

 /**
 * @ORM\OneToMany(targetEntity="AdsCapPublisher", mappedBy="ad", cascade={"persist", "remove"})
 **/
protected $adsCapPublisher;


public function addAdsCapPublisher(AdsCapPublisher $adCapPublisher)
{
    $this->adsCapPublisher[] = $adCapPublisher;

    return $this;
}

public function removeAdsCapPublisher(AdsCapPublisher $adCapPublisher)
{
    $this->adsCapPublisher->removeElement($adCapPublisher);
}

public function getAdsCapPublisher()
{
    return $this->adsCapPublisher;
}

public function setAdsCapPublisher($adsCapPublisher)
{
    $this->adsCapPublisher = $adsCapPublisher;

    return $this;
}

[...]
}

AdsCapPublisher.php

class AdsCapPublisher{


/**
 * @var Users
 *
 * @ORM\ManyToOne(targetEntity="Users", fetch="LAZY")
 * @ORM\JoinColumn(name="id_publisher", referencedColumnName="id_user")
 */
protected $publisher;

/**
 * @var decimal $dailyLimit
 *
 * @ORM\Column(name="daily_limit", type="decimal", nullable=false)
 */
protected $dailyLimit;

[...]
}

广告类型.php

public function buildForm(FormBuilderInterface $builder, array $options)
{
        $entityId= $builder->getData();
        $builder->add('adsCapPublisher', 'collection', array(
            'type' => new AdsCapPublisherType(),
            'required' => false,
            'allow_add' => true,
            'allow_delete' => true,
            'by_reference' => false
        ))

AdsCapPublisherType.php

class AdsCapPublisherType extends AbstractType{

public function buildForm(FormBuilderInterface $builder, array $options)
{
    // -- SECTION: General

    $builder
        ->add('publisher', 'hidden', array(
            'attr' => array(
                'class' => 'js-field-popup-publisher-added'
            )))
        ->add('dailyLimit', 'text', array(
            'required' => false,
            'attr' => array(
                'class' => 'js-field-popup-budget-added form-control k-input-field k-is-input-text k-ellipsis k-has-currency-inside-input',
                'min' => 0,
            )
        ));
}

public function getName()
{
    return 'adsCapPublisher';
}

public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
        'csrf_protection' => false,
        'data_class' => 'Entity\AdsCapPublisher',
        'csrf_field_name' => '_token',
        'intention' => 'ads',
        'translation_domain' => 'ads',
        'empty_data' => null
    ));
}

}

有什么帮助吗？ ：S