Symfony forms - mapping of checkbox - php

Question

Can I specify how the form field shold be mapped on data class?
Let's say I have form with check box and on my data entity the field is stored as string.
class FormType extends AbstractType {
public function configureOptions(OptionsResolver $resolver) {
$resolver->setDefaults([
'data_class' => DataEntity::class,
]);
}
public function buildForm(FormBuilderInterface $builder, array $options) {
$builder->add('issueType', CheckboxType::class, [
'label' => 'issueType',
]);
}
}
class DataEntity {
/** #var string Either PLASTIC or PAPER */
private $issueType;
public function getIssueType() {
return $this->issueType;
}
public function setIssueType($issueType) {
$this->issueType = $issueType;
}
}
Can I made the checkbox to be mapped as 'PLASTIC' if ture and 'PAPER' if false?

Answer 1

You can use data transformer to cast bolean to the string. See this tutorial: https://symfony.com/doc/current/form/data_transformers.html.
$builder->get('issueType')
->addModelTransformer(new CallbackTransformer(
function ($type) {
// your logic here
return $type;
},
function ($type) {
// your logic here
return $type;
}
));

Answer 2

try :
$builder->add('newsletter', 'choice', array(
'label' => 'Newsletter erhalten',
'attr' => array(
'class' => 'form-control',
),
'choices' => array(array('yes' => 'plastic'), array('no' => 'paper')),
'expanded' => true,
'multiple' => true,
'required' => false,
));
also check the answer here Symfony2 Change checkbox values from 0/1 to 'no'/'yes'