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我得到了一个名为'Activity'的实体，它定义了两个实体'Service'和'Location'之间的关系。Symfony 2：动态表单事件仅在编辑时返回InvalidArgumentException
“服务”和“位置”都使用另一个名为“分配”的实体来定义可以在具体位置使用哪些服务。
当我创建一个新的活动，选择一个服务后，我希望位置选择字段更新与分配定义的值。
我遵循symfony文档在窗体中创建这个'位置'依赖选择字段。
所有工作在创建/新形式很好，但是当我尝试编辑已创建活动服务字段值，位置字段不更新和symfony的探查显示我以下消息：
未捕获的PHP异常Symfony \ Component \ PropertyAccess \ Exception \ InvalidArgumentException：“在F：\ xampp \ htdocs \ gcd \ vendor \ symfony \ symfony \中给出”AppBundle \ Entity \ Location“类型的预期参数， src \ Symfony \ Component \ PropertyAccess \ PropertyAccessor.php第253行上下文：{“exception”：“Object（Symfony \ Component \ PropertyAccess \ Exception \ InvalidArgumentException）”}
这是我的活动实体
/**
* Activity
*
* @ORM\Table(name="activity")
* @ORM\Entity(repositoryClass="AppBundle\Repository\ActivityRepository")
*/
class Activity
{
/**
* @var int
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var Service
*
* @ORM\ManyToOne(targetEntity="Service", fetch="EAGER")
* @ORM\JoinColumn(name="service_id", referencedColumnName="id", nullable=false)
*/
private $service;
/**
* @var Location
*
* @ORM\ManyToOne(targetEntity="Location", fetch="EAGER")
* @ORM\JoinColumn(name="location_id", referencedColumnName="id", nullable=false)
*/
private $location;
我的控制器的一个部分。
/**
* Creates a new Activity entity.
*
* @Route("/new", name="core_admin_activity_new")
* @Method({"GET", "POST"})
*/
public function newAction(Request $request)
{
$activity = new Activity();
$form = $this->createForm('AppBundle\Form\ActivityType', $activity);
$form->handleRequest($request);
if($form->isSubmitted() && $form->isValid()){
$locationAvailable = $this->isLocationAvailable($activity);
$activityOverlap = $this->hasOverlap($activity);
if($locationAvailable && !$activityOverlap){
$em = $this->getDoctrine()->getManager();
$em->persist($activity);
$em->flush();
return $this->redirectToRoute('core_admin_activity_show', array('id' => $activity->getId()));
}
}
return $this->render('activity/new.html.twig', array(
'activity' => $activity,
'form' => $form->createView(),
));
}
/**
* Displays a form to edit an existing Activity entity.
*
* @Route("/{id}/edit", name="core_admin_activity_edit")
* @Method({"GET", "POST"})
*/
public function editAction(Request $request, Activity $activity)
{
$deleteForm = $this->createDeleteForm($activity);
$editForm = $this->createForm('AppBundle\Form\ActivityType', $activity);
$editForm->handleRequest($request);
if ($editForm->isSubmitted() && $editForm->isValid()) {
$locationAvailable = $this->isLocationAvailable($activity);
$activityOverlap = $this->hasOverlap($activity);
if($locationAvailable && !$activityOverlap){
$em = $this->getDoctrine()->getManager();
$em->persist($activity);
$em->flush();
return $this->redirectToRoute('core_admin_activity_show', array('id' => $activity->getId()));
}
}
return $this->render('activity/edit.html.twig', array(
'activity' => $activity,
'edit_form' => $editForm->createView(),
'delete_form' => $deleteForm->createView(),
));
}
我FormType
class ActivityType extends AbstractType
{
private $em;
public function __construct(EntityManager $entityManager)
{
$this->em = $entityManager;
}
/**
* @param FormBuilderInterface $builder
* @param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('service', EntityType::class, array(
'class' => 'AppBundle:Service',
'placeholder' => 'elige servicio',
))
->add('location', EntityType::class, array(
'class' => 'AppBundle:Location',
'choices' => array(),
))
->add('name')
->add('virtual')
->add('customerSeats')
->add('customerVacants')
->add('employeeSeats')
->add('firstDate', 'date')
->add('lastDate', 'date')
->add('weekday')
->add('beginTime', 'time')
->add('endTime', 'time')
->add('admissionType')
->add('status');
$formModifier = function (FormInterface $form, Service $service = null) {
$locations = null === $service ? array() : $this->em->getRepository('AppBundle:Allocation')->findLocationsByService($service);
$form->add('location', EntityType::class, array(
'class' => 'AppBundle:Location',
'choices' => $locations,
));
};
$builder->addEventListener(
FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($formModifier) {
$data = $event->getData();
$formModifier($event->getForm(), $data->getService());
}
);
$builder->get('service')->addEventListener(
FormEvents::POST_SUBMIT,
function (FormEvent $event) use ($formModifier) {
// It's important here to fetch $event->getForm()->getData(), as
// $event->getData() will get you the client data (that is, the ID)
$service = $event->getForm()->getData();
// since we've added the listener to the child, we'll have to pass on
// the parent to the callback functions!
$formModifier($event->getForm()->getParent(), $service);
}
);
}
/**
* @param OptionsResolver $resolver
*/
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'AppBundle\Entity\Activity'
));
}
}
JavaScript函数
<script>
var $service = $('#activity_service');
// When sport gets selected ...
$service.change(function() {
// ... retrieve the corresponding form.
var $form = $(this).closest('form');
// Simulate form data, but only include the selected service value.
var data = {};
data[$service.attr('name')] = $service.val();
// Submit data via AJAX to the form's action path.
$.ajax({
url : $form.attr('action'),
type: $form.attr('method'),
data : data,
success: function(html) {
// Replace current position field ...
$('#activity_location').replaceWith(
// ... with the returned one from the AJAX response.
$(html).find('#activity_location')
);
}
});
});
</script>
任何帮助将是伟大的，谢谢。