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9185351
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2012-02-07T23:00:13.157
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2012-02-07T23:00:13.157
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<p>I had the same problem. You must use form events. My code example with country, region, city relations.</p> <pre><code>namespace Orfos\UserBundle\Form\Type; ///import form events namespace use Symfony\Component\EventDispatcher\EventSubscriberInterface; use Symfony\Component\Form\FormEvents; use Symfony\Component\Form\Event\DataEvent; class RegistrationFormType extends BaseType { private $request; public function __construct($class, $request, $doctrine) { parent::__construct($class); $this->request = $request; $this->doctrine = $doctrine; } public function buildForm(FormBuilder $builder, array $options) { parent::buildForm($builder, $options); //other fields $locale = $this->request->getLocale(); $builder->add('country', 'entity', array( 'class' => 'Orfos\CoreBundle\Entity\Country', 'property' => $locale . 'name', 'label' => 'register.country.label', 'query_builder' => function(EntityRepository $er) { return $er->createQueryBuilder('c') ->select('c', 't') ->join('c.translations', 't'); }, )); $factory = $builder->getFormFactory(); $refreshRegion = function ($form, $country) use ($factory, $locale) { $form->add($factory->createNamed('entity', 'region', null, array( 'class' => 'Orfos\CoreBundle\Entity\Region', 'property' => $locale . 'name', 'label' => 'register.region.label', 'query_builder' => function (EntityRepository $repository) use ($country) { $qb = $repository->createQueryBuilder('region') ->select('region', 'translation') ->innerJoin('region.country', 'country') ->join('region.translations', 'translation'); if ($country instanceof Country) { $qb = $qb->where('region.country = :country') ->setParameter('country', $country); } elseif (is_numeric($country)) { $qb = $qb->where('country.id = :country_id') ->setParameter('country_id', $country); } else { $qb = $qb->where('country.id = 1'); } return $qb; } ))); }; $factory = $builder->getFormFactory(); $refreshCity = function($form, $region) use ($factory, $locale) { $form->add($factory->createNamed('entity', 'city', null, array( 'class' => 'Orfos\CoreBundle\Entity\City', 'property' => $locale . 'name', 'label' => 'register.city.label', 'query_builder' => function (EntityRepository $repository) use ($region) { $qb = $repository->createQueryBuilder('city') ->select('city', 'translation') ->innerJoin('city.region', 'region') ->innerJoin('city.translations', 'translation'); if ($region instanceof Region) { $qb = $qb->where('city.region = :region') ->setParameter('region', $region); } elseif (is_numeric($region)) { $qb = $qb->where('region.id = :region_id') ->setParameter('region_id', $region); } else { $qb = $qb->where('region.id = 1'); } return $qb; } ))); }; $builder->addEventListener(FormEvents::PRE_SET_DATA, function (DataEvent $event) use ($refreshRegion, $refreshCity) { $form = $event->getForm(); $data = $event->getData(); if ($data == null){ $refreshRegion($form, null); $refreshCity($form, null); } if ($data instanceof Country) { $refreshRegion($form, $data->getCountry()->getRegions()); $refreshCity($form, $data->getRegion()->getCities()); } }); $builder->addEventListener(FormEvents::PRE_BIND, function (DataEvent $event) use ($refreshRegion, $refreshCity) { $form = $event->getForm(); $data = $event->getData(); if (array_key_exists('country', $data)) { $refreshRegion($form, $data['country']); } if (array_key_exists('region', $data)) { $refreshCity($form, $data['region']); } }); } } </code></pre>
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