Symfony Dynamic Forms with ajax - php

Question

I am trying to do a form in which I will be able to add as many product options as I want (so collection with prototype). For this I need two fields, one Option Definition and second with Option values.
I have got entities like: Product, Options, Options Definitions and Product Options Join (I decided to use two ManyToOne instead of one ManyToMany, so in Product Definitions Join I got ManyToMany to Options and ManyToMany to Products).
When I am adding option to product, I want first to choose Option Definition and then update select box with Options. This is everything working alright, but the problem is that when I want to edit product then it is showing me default option definitions. For example, when I was creating product I added product with option definition size and the value of size was 40. When I going to edit product I am getting option definition color and size 40.
Here is on pictures what I mean:
And in second row there should be a Size instead of Colour.
Here you can also see how I got connected tables:
ProductOptionsType Class
public function buildForm(FormBuilderInterface $builder, array $options)
{
$factory = $builder->getFormFactory();
$builder
->add('optiondefinitions', 'entity', array(
'mapped' => false,
'class' => 'ePOS\ProductsBundle\Entity\OptionsDefinitions',
'query_builder' => function ($repository) { return $repository->createQueryBuilder('p')->orderBy('p.name', 'ASC'); },
'property' => 'name',
'attr' => array('class' => 'option-definitions')))
;
$refreshOptions = function ($form, $option) use ($factory) {
$form->add($factory->createNamed('options', 'entity', null, array(
'class' => 'ePOS\ProductsBundle\Entity\Options',
'property' => 'value',
'label' => false,
'auto_initialize' => false,
'query_builder' => function ($repository) use ($option) {
$qb = $repository->createQueryBuilder('options')
->innerJoin('options.optionDefinition', 'optionDefinitions');
if($option instanceof OptionsDefinitions) {
$qb = $qb->where('options.optionDefinition = :optiondefinitions')
->setParameter('optiondefinitions', $option);
} elseif(is_numeric($option)) {
$qb = $qb->where('options.id = :option_id')
->setParameter('option_id', $option);
} else {
$qb = $qb->where('options.optionDefinition = 1');
}
return $qb;
}
)));
};
$builder->addEventListener(FormEvents::POST_SET_DATA, function (FormEvent $event) use ($refreshOptions, $factory) {
$data = $event->getData();
$form = $event->getForm();
if (null === $data) {
return ;
}
$refreshOptions($form, $data->getOptions()->getOptionDefinition());
});
$builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) use ($refreshOptions) {
$form = $event->getForm();
$data = $event->getData();
if($data == null)
$refreshOptions($form, null); //As of beta2, when a form is created setData(null) is called first
if($data instanceof Location) {
$refreshOptions($form, $data->getOptions()->getOptionDefinition());
}
});
$builder->addEventListener(FormEvents::PRE_BIND, function (DataEvent $event) use ($refreshOptions) {
$form = $event->getForm();
$data = $event->getData();
if(array_key_exists('optiondefinitions', $data)) {
$refreshOptions($form, $data['optiondefinitions']);
}
});
}