Issues with form inheritance - php

Question

I have a PersonType form and then I have LegalPersonType and NaturalPersonType forms and both extends from PersonType since they have a common field on that form (mapped at Entity level). For example, this is the code for NaturalPersonType.php
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Tanane\FrontendBundle\DBAL\Types\CIType;
use Tanane\FrontendBundle\Form\Type\PersonType;
class NaturalPersonType extends PersonType {
public function buildForm(FormBuilderInterface $builder, array $options)
{
parent::buildForm($builder, $options);
$builder
->add('identification_type', 'choice', array(
'label' => 'Número de Cédula',
'choices' => CIType::getChoices()
))
->add('ci', 'number', array(
'required' => true,
'label' => false,
'attr' => array(
'maxlength' => 8,
))
)
->add('lives_in_ccs', 'checkbox', array(
'label' => false,
'required' => false,
'value' => 1,
));
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Tanane\FrontendBundle\Entity\NaturalPerson'
));
}
public function getName()
{
return 'natural_person';
}
}
Then at SaveFormController/orderAction() I'm doing this:
$order = new Orders();
$orderForm = $this->createForm(new OrdersType(array($type)), $order, array('action' => $this->generateUrl('save_order')));
But any time I try to render the form I get this error:
Neither the property "nat" nor one of the methods "getNat()", "nat()",
"isNat()", "hasNat()", "__get()" exist and have public access in class
"Tanane\FrontendBundle\Entity\Orders".
Relationship are at Entity level, how I fix that error?
Thanks in advance
1st possible solution
Following suggestions from user here I change, in OrderType.php Form my code to this:
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Tanane\FrontendBundle\DBAL\Types\SFType;
class OrdersType extends AbstractType {
/**
* #var string
*/
protected $register_type;
public function __construct($register_type)
{
$this->register_type = $register_type;
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
// here goes $builder with default options remove for see less code
if ($this->register_type[0] == "natural")
{
$builder->add('nat', new NaturalPersonType(), array(
'data_class' => 'Tanane\FrontendBundle\Entity\NaturalPerson'
));
}
elseif ($this->register_type[0] == "legal")
{
$builder->add('leg', new LegalPersonType(), array(
'data_class' => 'Tanane\FrontendBundle\Entity\LegalPerson'
));
}
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Tanane\FrontendBundle\Entity\Orders',
'render_fieldset' => FALSE,
'show_legend' => FALSE
));
}
public function getName()
{
return 'orders';
}
}
I've fixed by adding 'mapped' => FALSE on each new FormType I add in OrdersType but I don't know if this is the right. Also, if I'm defining the data_class here, and NaturalType will never be access directly just trough OrdersType should I remove the default options from that form or should I leave them there? How can I fix the problem now? What I'm missing?

Answer 1

This is not a direct answer to your question but maybe could solve some problem before that happens...
I don't remember to have seen it's possible to extend a form like this instead of extend AbstractType, but as explained in the docs, if you have common fields to share between different types of forms you should use the native framework modularity offered by inherit_data.
If you need something more specific (some special methods to execute on some field) you can create a new field type or extend an existing one using AbstractTypeExtension.
EDIT:
I don't know exactly why you are using this approach (that I never used in my projects) but IMO PersonType, NaturalPersonType and LegalPersonType should be only "FormType/FieldType" initialized with inherit_data (and not entities like in your code) that contains the fields related to their use, while OrdersType should be composed with the block of forms needed to the type of person who fills it and with data_class setted on the UNIQUE entity that store the data outputted by the form.