Это более подробное решение, основанное на user1207727.
Тип родителя
class FrontentStatsInputFormType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('records', CollectionType::class, array(
'entry_type' => FrontendStatsRecordType::class,
'allow_add' => false,
'allow_delete' => false,
'label' => null,
))
;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => null
));
}
}
Дочерний тип
class FrontendStatsRecordType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->addEventListener(FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($builder)
{
$form = $event->getForm();
$child = $event->getData();
if ($child instanceof StatsRecord) {
// Do what ever you like with $child entity data
// $child->getSomeValue();
$form->add('value', TextType::class);
}
}
);
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'AppBundle\Entity\StatsRecord',
));
}
}
Создать форму в контроллере
public function indexAction(Request $request, InputForm $inputForm) {
$data = array();
foreach ($inputForm->getStatsTemplates() as $template) {
$statsRecord = new StatsRecord();
$data['records'][] = $statsRecord;
}
$form = $this->createForm('AppBundle\Form\FrontentStatsInputFormType', $data);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$em = $this->getDoctrine()->getManager();
// Get entries and persist them in the database
$records = $form->get('records')->getData();
foreach ($records as $record) {
$em->persist($record);
}
$em->flush();
return $this->redirectToRoute('frontend_index');
}
return $this->render('frontend/showInputForm.html.twig', array(
'inputForm' => $inputForm,
'form' => $form->createView(),
));
}