Var填充物体突然空了,发生了什么?

时间:2012-09-08 21:01:08

标签: php forms symfony fatal-error

好的,我通常不会寻求帮助,但它让我发疯,我必须在这里完成这个项目。如果我遗漏任何可能有帮助的信息,请告诉我。

所以我在symfony 2.0中构建这个表单,出于某种原因,当我从db中检索一个对象并将其放入一个对象时,当我想保存它时它就消失了,所以我得到以下错误:

Catchable Fatal Error: Argument 1 passed to MelvinLoos\CMS\CoreBundle\Entity\Page::setParent()
must be an instance of MelvinLoos\CMS\CoreBundle\Entity\Page, null given, 
called in vendor\symfony\src\Symfony\Component\Form\Util\PropertyPath.php on line 347
and defined in src\MelvinLoos\CMS\CoreBundle\Entity\Page.php line 233

我的代码:

public function popupChildAction($parentid)
{
    $entity  = new Page();
    $entity->setWebsite($this->getWebsite());

    $parent = $this->getDoctrine()
    ->getRepository('MelvinLoosCMSCoreBundle:Page')
    ->findOneById($parentid);

    if (!$parent)
    {
        throw $this->createNotFoundException('No parent found with given id: "' . $parentid . '"');
    }
    $entity->setParent($parent);

    $entity->setCreatedBy($this->getUser());
    //$entity->setPageType();
    $form   = $this->createForm(new PageChildType(), $entity);
    $request = $this->getRequest();
    $form->bindRequest($request);

    if ($form->isValid()) {

        $em = $this->getDoctrine()->getEntityManager();
        $em->persist($entity);
        $em->flush();

        return $this->redirect($this->generateUrl('page_show', array('id' => $entity->getId())));

    }

    return $this->render('MelvinLoosCMSCoreBundle:Page:new_popup.html.twig', array(
            'entity' => $entity,
            'form'   => $form->createView(),
            'parent' => $parent
    ));
}

正如你所看到的那样,我输入一个if语句来检查$ parent是否已被填充,我还尝试了一个var_dump来进行双重检查,它会被一个对象填充。但由于某种原因,当我调用实体对象的setParent()函数时,它用null填充它.... 也许我只是忽略了一些东西,因为我工作的时间太长但是非常感谢所有的帮助。谢谢!

2 个答案:

答案 0 :(得分:0)

Melvin你检查表格是否已提交并从表格中获取实体 你能这样试试吗?

    $form   = $this->createForm(new PageChildType(), $entity);
    $request = $this->getRequest();

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

        if ($form->isValid()) {
            $entity = $form->getData();
            $em = $this->getDoctrine()->getEntityManager();
            $em->persist($entity);
            $em->flush();

            return $this->redirect($this->generateUrl('page_show', array('id' => $entity->getId())));
        }
    }

答案 1 :(得分:0)

完全忘记了我的问题仍然存在...无论如何我解决了我的问题,仍然不知道为什么我得到了错误,但我用一个非常简单的解决方案解决了它。

我没有为孩子设置父级,而是反过来设置父级的子级。我的代码如下(还有一些新的代码,因为我在不久前修复了它。)

public function popupChildAction($parentid)
{
    $parent = $this->getDoctrine()
    ->getRepository('MelvinLoosCMSCoreBundle:Page')
    ->findOneById($parentid);

    if (!$parent)
    {
        throw $this->createNotFoundException('No parent found with given id: "' . $parentid . '"');
    }
    $entity  = new Page();
    $entity->setWebsite($this->getWebsite());
    $entity->setCreatedBy($this->getUser());
    $form   = $this->createForm(new PageChildType(), $entity);
    $request = $this->getRequest();
    $form->bindRequest($request);

    if ($form->isValid()) {
        $em = $this->getDoctrine()->getEntityManager();
        $parent->setChildren($entity);
        $em->persist($entity);
        $em->flush();

        return $this->redirect($this->generateUrl('page_show', array('id' => $entity->getId())));

    }

    return $this->render('MelvinLoosCMSCoreBundle:Page:new_popup.html.twig', array(
            'entity' => $entity,
            'form'   => $form->createView(),
            'parent' => $parent
    ));
}

就像我说的那样,有更新的代码是无关紧要的,但它的全部内容是与之相关的部分     $parent->setChildren($entity);现在它有效......希望这有助于某人! 感谢所有给予投入的人!