如何从Symfony 2编辑对象表单中的对象列表中选择

Question

我有一个表单,您可以在其中编辑对象"one"的属性.此对象与另一个对象"很多"具有一对多的关系.我希望用户能够从表单中选择将"many"对象分配给"one".我无法弄明白该怎么做!

马上:

\实体\ One.php

class One
{
 ...
  /*
   * @ORM\ManyToOne(targetEntity="many", inversedBy="one")
   * @ORM\JoinColumn(name="manyId", referencedColumnName="id")
   */
  protected $manyId;
 ...
}

\控制器\ OneController.php

class OneController extends Controller
{
  ... 
    public function editAction($oneId, Request $request)
    {
        if ($oneId) {
            $one = $this->getDoctrine()
                ->getRepository('One')
                ->find($oneId);
        } else {
            $one = new One();
        }

        $em = $this->getDoctrine()->getEntityManager();
        $manyEntity = 'Bundle\Entity\Many';
        $manyList = new EntityChoiceList($em, $manyEntity);

        $form = $this->createFormBuilder($one)
            ->add('many', 'choice', array('choice_list' => $manyList))
            ->getForm();

        if ($request->getMethod() == 'POST') {
            $form->bindRequest($request);

            if ($form->isValid()) {
                $entityManager = $this->getDoctrine()->getEntityManager();
                $entityManager->persist($one);
            }
        }
     }
 ...
}

这导致错误消息"类型的预期参数"标量","Proxies\BundleEntityManyProxy"给定".

谢谢你的帮助!

Answer 1

解决了!我应该写的->add('many', 'entity', array('class' => 'BundleMany')).

见http://forum.symfony-project.org/viewtopic.php?f=23&t=36604.