Controller of collection form - php

Question

I'm beginner on symfony and I have to use the collection form to make a site to reserve tickets for a show.
The interface is simple, The user select the number of tickets he wants, then it display as much form prototype (name and surname input) as tickets required.
This part works well for me.
I have 2 table "reservations" and "ticket" in mysql and I would like to get this render after submiting the form:
Table reservation :
Reservation id = 1
Table ticket:
Ticket id="1" name="thomas", surname="good", reservation_id="1"
Ticket id="2" name="laura", surname="senior", reservation_id="1"
But when I submit my form, I get +1 reservation in my table but no data in my ticket table.
class AdvertController extends Controller
{
public function formAction(Request $request)
{
$em = $this->getDoctrine()->getManager();
$reservation = new Reservations();
$form = $this->createForm(new ReservationsType(), $reservation, array(
'action' => $this->generateUrl('louvre_pages_homepage'),
'method' => 'POST',
));
$form->handleRequest($request);
$em->persist($reservation);
$em->flush();
return $this->render('LouvrePagesBundle:Pages:index.html.twig', array(
'form' => $form->createView(),
));
}
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('tickets', CollectionType::class, array(
'entry_type' => TicketType::class,
'allow_add' => true,
'allow_delete' => true,
'by_reference' => false,
'prototype' => true,
)
)
->add('save', 'submit', array(
'attr' => array(
'class' => 'btn btn-lg btn-success'
)
));
}
public function getName()
{
return 'reservations';
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Louvre\PagesBundle\Entity\Reservations',
));
}
Is my controller right ?

Answer 1

I see 2 problems in the formAction:
there is no call to $em->flush(); anywhere
you are always calling $em->persist($reservation); regardless of the form validation state
Try doing it this way:
if ($form->isSubmitted() && $form->isValid()) {
$em->persist($reservation);
$em->flush();
// now redirect, add flash message, etc.
}
See http://symfony.com/doc/current/book/forms.html#handling-form-submissions