Question

I am building this form in symfony 2.0 and for some reason when I retrieve a object from the db and put it into an object it is gone when I want to save it so I get the following error:

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

My code:

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
    ));
}

As you can see I put in a if statement to check if $parent is filled and I also tried a var_dump to double check, it is defiantly filled with an object. But for some reason when I call the setParent() function of the entity object it fills it with null.

Answer 1

Totally forgot that I had this question still floating around… Anyway I got around my problem, still don’t know why I got the error but I solved it with quite a easy solution.

Instead of setting the parent for the child, I did the reverse and set the child for the parent. My code is the following (There is also new code in there that’s irrelevant because I fixed it some time ago).

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
    ));
}

Like I said there is newer code that is irrelevant but what it’s all about is the part with
$parent->setChildren($entity); and now it works… hope this helps someone!
Thanks for everyone that gave input!