>From jmi...@gmail.com
I moved it here so everyone can benefit from the conversation :)
As I learned from my recent issues when I updated to beta 2, here is
the process.
When the form is created via $this->get('form.factory')->create(new
MyFormType(), $data), 3 things happen that are relevant to this use-
case.
1) The method setData(null) is called. Note the null, you have to
account for this in the preSetData event.
2) setData($data) is called with $data being the second argument of
create. Could be an Entity, POPO, or associative array.
3) When we call $form->bindRequest($this->get('request')), the
preBind event is triggered, the data is an associative array of the
relevant part of the request. If your type was "MyType", the array
returned from $request->get('mytype') is what you get.
Here is josip's email (the full file he requested is below his e-
mail):
I'm having a similar problem as you had. Since i reckon yours is
working now I would just like to ask you a few things.
1) Where does the data['state'] in the preBind listener come from, is
it an entity field, i.e. an choice field?
2) If 1) is true isn't the data['state'] in this preBInd listener
actually an identifier of the state entity and not the entity itself
(i gather that the conversion of the submitted data into its entities
is complete when the onBindNormData event is fired).
3) if 2) is correct did you than load the state entity with an entity
manager from the given id.
4) could you maybe provide me with the complete ContactType form
Thanks in advance
Josip
*****************************************************************************
class ContactInfoType 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',
'property' => 'city_name',
'label' => 'City',
'query_builder' => function (EntityRepository
$repository) use ($state) {
$qb = $repository-
>createQueryBuilder('cities')
-
>select(array('cities', 'zip_codes'))
-
>innerJoin('cities.states', 'states')
-
>innerJoin('cities.zip_codes', 'zip_codes');
if($state instanceof States) {
$qb = $qb-
>where('cities.states = :state')
-
>setParameter('state', $state);
} elseif(is_numeric($state)) {
$qb = $qb-
>where('states.state_id = :state_id')
-
>setParameter('state_id', $state);
} else {
$qb = $qb-
>where('states.state_id = 1');
}
return $qb;
}
)));
};
$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(array_key_exists('state', $data)) {
$refreshCity($form, $data['state']);
}
});
$builder->add('first_name', 'text');
$builder->add('last_name', 'text');
$builder->add('address', 'text');
$builder->add('state', 'entity', array(
'class' => 'Entity:States',
'property' => 'abbrev',
'label' => 'State',
'query_builder' => function (EntityRepository $repository)
{
return $repository-
>createQueryBuilder('states')
-
>where('states.state_id > 1');
}
));
$builder->add('zip', 'text', array('max_length' => 10));
$builder->add('email', 'text');
}
public function getDefaultOptions(array $options) { return
array('data_class' => 'ARN\EntityBundle\Entity\ContactInfo'); }
}
*****************************************************************************
On May 5, 8:48 am, Roger Webb <webb.ro...@gmail.com> wrote:
> 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:
>
>
>
>
>
>
>
> > HiRoger,
>
> > 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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