在嵌入表单中持久化OneToOne关系时出错

我的symfony EntityBundle中有这些实体：第一个Organization.php:

    class Organization
    {
    /**
         * @var integer
         *
         * @ORM'Column(name="organization_id", type="integer", nullable=false)
         * @ORM'Id
         * @ORM'GeneratedValue(strategy="IDENTITY")
         */
        protected $id;
        /**
         * @Assert'Type(
         *     type="string",
         *     message="The value {{ value }} is not a valid {{ type }}."
         * )
         * @Assert'NotNull()
         * @Assert'NotBlank()
         * @ORM'Column(name="organization_name", length=255)
         */
        protected $name;
    /**
         * @var Address
         *
         * @ORM'OneToOne(targetEntity="Address", inversedBy="organization", cascade={"persist"})
         * @ORM'JoinColumn(name="address_id", referencedColumnName="address_id")
         */
        protected $address;
    /**
         * Set address
         *
         * @param 'MyNamespace'EntityBundle'Entity'Address $address
         *
         * @return Organization
         */
        public function setAddress('MyNamespace'EntityBundle'Entity'Address $address = null)
        {
            $this->address = $address;
            $address->setOrganization($this);
        }

        /**
         * Get address
         *
         * @return 'MyNamespace'EntityBundle'Entity'Address
         */
        public function getAddress()
        {
            return $this->address;
        }
    }

第二，Address.php:

class Address
{
/**
     * @var integer
     *
     * @ORM'Column(name="address_id", type="integer", nullable=false)
     * @ORM'Id
     * @ORM'GeneratedValue(strategy="IDENTITY")
     */
    protected $id;
    /**
     * @Assert'Length(
     *      max = 5,
     *      maxMessage = "Votre numéro de rue doit avoir maximum {{ limit }} chiffres"
     * )
     * @Assert'NotNull()
     * @Assert'NotBlank()
     * @ORM'Column(name="street_number", type="integer")
     */
    protected $streetNumber;
/**
     * @Assert'Type(
     *     type="string",
     *     message="The value {{ value }} is not a valid {{ type }}."
     * )
     * @Assert'NotNull()
     * @Assert'NotBlank()
     * @ORM'Column(name="street_name", length=255)
     */
    protected $streetName;
/**
     * @var 'Doctrine'Common'Collections'Collection
     *
     * @ORM'OneToOne(targetEntity="Organization", mappedBy="address")
     */
    protected $organization;
/**
     * Set organization
     *
     * @param 'MyNamespace'EntityBundle'Entity'Organization $organization
     *
     * @return Address
     */
    public function setOrganization('MyNamespace'EntityBundle'Entity'Organization $organization = null)
    {
        $this->organization = $organization;
        return $this;
    }
    /**
     * Get organization
     *
     * @return 'MyNamespace'EntityBundle'Entity'Organization
     */
    public function getOrganization()
    {
        return $this->organization;
    }
    /**
     * Add organization
     *
     * @param 'MyNamespace'EntityBundle'Entity'Organization $organization
     * @return Address
     */
    public function addOrganization('MyNamespace'EntityBundle'Entity'Organization $organization)
    {
        $this->organization[] = $organization;
        $organization->setOrganization($this);
        return $this;
    }
}

这是y控制器，以便以嵌入形式持久保存数据：

public function RegistrationAction()
    {
      $organization = new Organization();
      $form = $this->createForm(new OrganizationType(), $organization)
                   ->add('save', 'submit', array('label' => 'Create'));
      $request = $this->getRequest();
      if( $request->isMethod('POST') ) {
        $form->bind($request);
        if( $form->isValid() ) {
          $em = $this->getDoctrine()->getManager();
          $em->persist($organization);
          $em->flush();
           return $this->redirectToRoute('homepage');
        }
      }
      return $this->render('MyBundle:MyFolder:Registration.html.twig', array(
        'form' => $form->createView(),
      ));
    }

这是我的表格类型OrganizationType.php:

$builder
->add('name')
/* ... the other fields ... */
->add('address', 'collection', array(
                                     'type' => new AddressType(),
                                     'allow_add' => true,
                                     'allow_delete' => false,
                                     'by_reference' => false,
                                     'mapped' => true,
                                     ));
}

最后是我的树枝视图来呈现形式：

<div>
  {{ form_start(form, {'action': path('path_action'), 'method': 'POST'}) }}
    {{ form_errors(form) }}
    {{ form_row(form.name) }}
    {# .. the other fields ...#}
    {{ form_row(form.address.vars.prototype) }}
  {{ form_end(form) }}
</div>

除了我提交表格外，一切都很顺利。发生此错误：

可捕获的致命错误：参数1传递给MyNamespace''EntityBundle''Entity''Organization:：setAddress（）必须是MyNamespace''EntityBundle''Entity''Address的实例，给定数组，调入C： ''wamp''www''myApp''vendor''symfony''symfony ''src''symfony''Component''PropertyAccess''PropertyActor.php在线502上并且被定义，'C:''wamp''www''myApp''src''MyNamespace''EntityBundle''Entity''Organization.php'，"336"，中的数组（'this'=>对象（组织））src''MyNamespace''EntityBundle''Entity''Organization.php，第336行

我该怎么解决？