Pass array of data to form - symfony

Question

I'm using symfony and I need to pass two arrays so I can make a selectable list.
For now in form builder I have this:
->add('city', EntityType::class, [
'label' => 'Select city',
'class' => Cities::class,
'choice_label' => 'title',
'choice_value' => 'title'
])
It throws me all cities in the list. I want to filtrate them. I've done filtration on my controller like this:
$capitals = $cityRepository->findBy(['cityType' => CityType::capital()->id()]);
$villages = $cityRepository->findBy(['villageType' => CityType::village()->id()]);
this returns me two arrays: capitals and villages.
How can I pass them to the form ?

Answer 1

In your controller :
$form=$this->createForm(YourFormType::class, $yourEntity, array(
'capitals'=>$capitals,
'villages'=>$villages
));
In your form :
public function buildForm(FormBuilderInterface $builder, array $options) {
/** #var array $capitals */
$capitals=$options['capitals'];
/** #var array $villages */
$villages=$options['villages'];
$builder->add('city', EntityType::class, array(...)
->add('vallacap', ChoiceType::class, array(
'mapped'=>false, //Make sure it's not mapped to any entity
'choices'=>array(
'Capitals'=>$capitals,
'Villages'=>$villages
),
'required'=>false,
));
}
public function configureOptions(OptionsResolver $resolver) {
$resolver->setDefaults(array(
'data_class'=>Personnalisation::class,
'capitals'=>null, // Set default to null in case argument is not passed
'villages'=>null,
));
}

Answer 2

You need to pass the arrays to choices option.
https://symfony.com/doc/current/reference/forms/types/entity.html#using-choices
->add('city', EntityType::class, [
'label' => 'Select city',
'class' => Cities::class,
'choice_label' => 'title',
'choice_value' => 'title',
'choices' => $choices // ------------> This line
])
$choices = array_merge($capitals, $villages);