Hi Bernhard,
Thank you so much for your reply. Everything works perfectly. There
was only one thing that needed to be changed. The data in the
"preBind" callback was an associative array instead of a ContactInfo
entity.
Thanks again, I struggled with this form component for a couple of
days but I'm really loving it now.
Roger
On May 4, 3:15 pm, Bernhard Schussek <bschus...@gmail.com> wrote:
> Hi Roger,
>
> You should never rely on the form data in your type class (as you've
> just discovered). When the form is constructed, you can never be
> certain that the data is already available and won't be changed.
>
> In your case, I recommend to add an event listener to the preBind and
> preSetData events that overrides the 'city' field.
>
> class ContactType extends AbstractType {
>
> public function buildForm(FormBuilder $builder, array $options) {
> $factory = $builder->getFormFactory();
>
> $refreshCity = function ($form, $state) use ($factory) {
> $form->add($factory->createNamed('entity', 'city', null, array(
> 'class' => 'Entity:Cities',
> 'query_builder' => function (EntityRepository
> $repository) use ($state) {
> return $respository->createQueryBuilder('cities')
> ->select(array('cities', 'zip_codes'))
> ->innerJoin('cities.zip_codes', 'zip_codes')
> ->where('cities.states = :state')
> ->setParameter('state', $state);
> },
> 'property' => 'city_name',
> 'label' => 'City',
> )));
> };
>
> $builder->addEventListener(Events::preSetData, function
> (DataEvent $event) use ($refreshCity) {
> $form = $event->getForm();
> $data = $event->getData();
>
> if ($data instanceof ContactInfo) {
> $refreshCity($form, $data->getCity()->getState());
> }
> });
>
> $builder->addEventListener(Events::preBind, function
> (DataEvent $event) use ($refreshCity) {
> $form = $event->getForm();
> $data = $event->getData();
>
> if (isset($data['state'])) {
> $refreshCity($form, $data['state']);
> }
> });
>
> Obviously this is untested, but I think this should work (with
> probably minor modifications depending on your form).
>
> Bernhard
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