我在symfony 2.0中构建这个表单,由于某种原因,当我从数据库中检索对象并将其放入对象中时,当我想保存它时,它就不见了,所以我得到了以下错误:
Catchable Fatal Error: Argument 1 passed to MelvinLoosCMSCoreBundleEntityPage::setParent()
must be an instance of MelvinLoosCMSCoreBundleEntityPage, null given,
called in vendorsymfonysrcSymfonyComponentFormUtilPropertyPath.php on line 347
and defined in srcMelvinLoosCMSCoreBundleEntityPage.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' => $parent
));
}
正如你所看到的,我放入了一个if语句来检查$parent是否已填充,我还尝试了一个var_dump来进行双重检查,它充满了一个对象。但由于某种原因,当我调用实体对象的setParent()函数时,它会用null填充它。
Melvin您有权检查表单是否已提交,并从表单中获取实体。
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' => $entity->getId())));
}
}
完全忘记了我还有这个问题。。。不管怎样,我解决了我的问题,仍然不知道为什么我会出错,但我用一个相当简单的解决方案解决了它。
我没有为子对象设置父对象,而是相反,为父对象设置子对象。我的代码如下(其中还有一些新代码无关紧要,因为我前段时间修复了它)。
public function popupChildAction($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' => $parent
));
}
就像我说的,有一些更新的代码是无关紧要的,但它的全部内容是$parent->setChildren($entity);
,现在它工作。。。希望这能帮助到别人!感谢所有提供意见的人!