Question

我有2个实体：Campaignstreams＆amp; Materialstreams。它们在ManyToMany关系中彼此链接。

Campaignstream

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

 /**
  * @var string
  *
  * @ORM\Column(name="name", type="string", length=80)
  */
  private $name;

 /**
  * @ORM\ManyToMany(targetEntity="materialstream", inversedBy="campaignstreams")
  * @ORM\JoinTable(name="campaignstream_materialstream")
  *
  */
  private $materialstreams;
}

Materialstream

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

 /**
  * @var string
  *
  * @ORM\Column(name="description", type="string", length=80)
  */
  private $description;

 /**
  * @ORM\ManyToMany(targetEntity="campaignstream", mappedBy="materialstreams")
  *
  */
  private $campaignstreams;

}

现在，我想创建一个多步骤表单来创建一个附加了多个物流的广告系列流。

在我的控制器里，我有这样的事情：

public function addAction(Request $request, $step)
{
  $session = $request->getSession();
  $em = $this->getDoctrine()->getManager();

  if ($step == 1) {
    $campaignstream = ($session->get('campaignstreamdata') == '') ? new campaignstream() : $session->get('campaignstreamdata');
    $CSF = $this->createForm(new CampaignstreamForm(), $campaignstream);
    $CSF->handleRequest($request);
    if ($CSF->isSubmitted() && $CSF->isValid()) {
      $session->set('campaignstreamdata', $CSF->getData());
      return $this->redirectToRoute('campaignstream_add', array('step' => 2));
    } else {
      return $this->render('CampaignBundle:Stream:add.html.php', array(
        'current' => $id, 
        'data' => $CSF->createView()
      ));
    }
  } elseif ($step == 2) {
    $campaignstream = $session->get('campaignstreamdata');
    $CSMSF = $this->createForm(new CampaignstreamMaterialstreamForm(), $campaignstream);
    if ($CSMSF->isSubmitted()) {
      $session->set('campaignstreamdata', $CSMSF->getData());
      return $this->redirectToRoute('campaignstream_add', array('step' => 3));
    } else {
      return $this->render('CampaignBundle:Stream:add.html.php', array(
        'progress' => $progress,
        'current' => $id,
        'data' => $CSMSF->createView(),
        'title' => $title,
        'campaignstream' => $campaignstream
      ));
    }
  } elseif ($step == 3) {
     ...
  }
}

现在，在我用于第2步的表单中，我有：

public function buildForm(FormBuilderInterface $builder, array $options)
{
  $builder
    ->add('materialstreams', 'entity', array(
      'class' => 'CampaignBundle:materialstream',
      'property' => 'description',
      'multiple' => true,
      'expanded' => false,
    ));
}

现在的问题是：
我通过第1步填写名称。我通过第2步，选择正确的物流。我来到第3步，我意识到我忘记了1个物流。我点击该链接返回步骤2，以获取错误：必须管理传递到选择字段的实体

我用谷歌搜索了它，并尝试了各种解决方案，如：

$campaignstream = $em->merge($campaignstream);

错误消失了，但我的表单没有填充先前添加的数据，但数据确实存在于会话中。

我真的可以使用一些帮助。

Answer 1

哇，在尝试了很多不同的事情之后，我终于解决了它！

我必须分别在每个物流上进行合并：

} elseif ($id == 2){
  $campaignstream = $session->get('campaignstreamdata');

  $materials = $campaignstream->getMaterialstreams();

  foreach($materials as $material)
  {
    $campaignstream->removeMaterialstream($material);
    $campaignstream->addMaterialstream($em->merge($material));
  }
  ...
}

错误：传递给选择字段的实体必须以多步形式进行管理

1 个答案: