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POAdd event listener to form element added by event listener
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20544442
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2013-12-12T13:08:17.440
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I'm building a Symfony app and using form events with some jquery/ajax to do the whole "state/locality" thing. I have a slight issue though, I am using the format Province -> City -> Suburb. Now as far as I can tell my code is fine, but when the execution hits the section where I add a listener to the "City" select, it throws an error saying the following: <code>The child with the name "physicalCity" does not exist.</code> This obviously happens when I try and add an event listener to the newly created field, thus adding an event listener to an element created by an event listener? A section of the code is below... What am I doing wrong? Any help would be very much appreciated! <pre><code>public function buildForm(FormBuilderInterface $builder, array $options) { $builder ->add('schoolName') ->add('physicalProvince', 'entity', array( 'mapped' => false, 'class' => 'MY\MainBundle\Entity\Province', 'empty_value' => 'Select a province', 'attr' => array( 'class' => 'province', 'data-show' => 'physical-city', ) )); /* * For the physical cities */ $physicalCityModifier = function(FormInterface $form, Province $province = null) { if (null !== $province) $cities = $province->getCities(); else $cities = array(); $form->add('physicalCity', 'entity', array( 'mapped' => false, 'class' => 'MY\MainBundle\Entity\City', 'empty_value' => 'Select a province first', 'choices' => $cities, 'attr' => array( 'class' => 'city physical-city', 'data-show' => 'physical-suburb' ) )); }; $builder->addEventListener( FormEvents::PRE_SET_DATA, function(FormEvent $event) use ($physicalCityModifier) { $data = $event->getData(); if (is_object($data->getPhysicalSuburb())) $province = $data->getPhysicalSuburb()->getCity()->getProvince(); else $province = null; $physicalCityModifier($event->getForm(), $province); } ); $builder->get('physicalProvince')->addEventListener( FormEvents::POST_SUBMIT, function (FormEvent $event) use ($physicalCityModifier) { $province = $event->getForm()->getData(); $physicalCityModifier($event->getForm()->getParent(), $province); } ); /* * For the physical suburbs */ $physicalSuburbModifier = function(FormInterface $form, City $city = null) { if (null !== $city) $suburbs = $city->getSuburbs(); else $suburbs = array(); $form->add('physicalSuburb', null, array( 'choices' => $suburbs, 'empty_value' => 'Select a city first', 'attr' => array( 'class' => 'physical-suburb' ), )); }; $builder->addEventListener( FormEvents::PRE_SET_DATA, function(FormEvent $event) use ($physicalSuburbModifier) { $data = $event->getData(); if (is_object($data->getCity())) $city = $data->getCity(); else $city = null; $physicalSuburbModifier($event->getForm(), $city); } ); $builder->get('physicalCity')->addEventListener( FormEvents::POST_SUBMIT, function(FormEvent $event) use ($physicalSuburbModifier) { $city = $event->getForm()->getData(); $physicalSuburbModifier($event->getForm()->getParent(), $city); } ); } </code></pre>
Tags
<php><events><symfony>
Title
Add event listener to form element added by event listener
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1. PO
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