ZF3 - Set field in fieldset required depnding on form - forms

Question

I have a fieldset with a field called "company" which is not required by default. Now there is a form which adds this fieldset and now "company" should be required. Is there a way to do this in e. g. the form factory? Or can I rewrite the input filters of the fieldset in my inputfilter class binded to the form?
Thanks for any response!
Fieldset
class MyFieldset extends Fieldset implements InputFilterProviderInterface {
public function init() {
$this->add([
'name' => 'company',
'options' => [
'label' => 'Firma'
],
'attributes' => [
'id' => 'address-company'
]
]);
}
public function getInputFilterSpecification() {
return [
'company' => [
'required' => false,
'filters' => [
['name' => 'StripTags'],
['name' => 'StringTrim'],
['name' => 'ToNull']
],
'validators' => [
[
'name' => 'StringLength',
'options' => [
'encoding' => 'UTF-8',
'min' => 1,
'max' => 128
]
]
]
],
];
}
}
Form
class MyForm extends Form {
public function init() {
$this->add([
'type' => MyFieldset::class,
'name' => 'test',
'options' => [
'use_as_base_fieldset' => true
]
]);
}
}
Form Factory
class MyFormFactory implements FactoryInterface {
public function __invoke(ContainerInterface $container, $requestedName, array $options = null) {
$hydratorManager = $container->get('HydratorManager');
$inputFilterManager = $container->get('InputFilterManager');
$form = new MyForm();
$form->setHydrator($hydratorManager->get(DoctrineObject::class));
$form->setInputFilter($inputFilterManager->get(MyInputFilter::class));
$form->bind(new Entity());
return $form;
}
}

Answer 1

The only way I can think of doing it is.
In your fieldset use:
private $companyRequired = FALSE;
public function setCompanyRequired($companyRequired)
{
$this->companyRequired = (bool) $companyRequired;
}
public function getInputFilterSpecification()
{
return [
'company' => [
'required' => $this->companyRequired,
'filters' => [
['name' => 'StripTags'],
['name' => 'StringTrim'],
['name' => 'ToNull']
],
'validators' => [
[
'name' => 'StringLength',
'options' => [
'encoding' => 'UTF-8',
'min' => 1,
'max' => 128
]
]
]
],
];
}
in the form where the company is required place this in your init() method after adding the fieldset:
$this->get('test')->setCompanyRequired(TRUE);
As the getInputFilterSpecification() method is not read until you validate your form this should work.

Answer 2

I have previously answered a similar question relating to over loading the default input filter options of a nested fieldset.
You can do the same inside the form using the Zend\InputFilter\InputFilterProviderInterface
class MyForm extends Form implements InputFilterProviderInterface
{
public function init()
{
//..
}
public function getInputFilterSpecification()
{
return [
'test' => [
'type' => 'Zend\\InputFilter\\InputFilter',
'company' => [
'required' => true,
],
],
];
}
}
Or alternately, you can achieve the same by manually configuring the fieldset's input filter inside MyFormFactory;
class MyFormFactory implements FactoryInterface
{
public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
{
//.. same code
$form->getInputFilter() // fetch the input filter you just attached.
->get('test') // the name of the neseted fieldset (another input filter)
->get('company') // the name of the input
->setRequired(true); // set required to true :)
return $form;
}
}