Symfony：如何将字段表单添加到孩子？

Question

我有一个字段类型实体呈现为复选框，我想为每个复选框添加一个textarea类型的字段，我该怎么做？

代码：

// OfferType.php 
$builder 
    ->add('payment_method', new OfferPaymentType(), [ 
     'required' => false, 
     'mapped' => false, 
     'expanded' => true, 
     'multiple' => true, 
    ]) 
; 

// OfferPaymentType.php 
class OfferPaymentType extends AbstractType 
{ 
    public function buildForm(FormBuilderInterface $builder, array $options) 
    { 
     $builder 
      ->add('payment', null, [ 
       'multiple' => true, 
       'expanded' => true, 
       'compound' => true, 
      ])  
     ; 

     $factory = $builder->getFormFactory(); 

     $formModifier = function (FormInterface $form, $payments = null) use ($factory) { 
      foreach ($form as $child) { 
       //dump($child);die; 
       $child->add(
        $factory->createNamed('metadata', 'textarea', null, [ 
         'auto_initialize' => false, 
         'compound' => true, 
        ]), 
        null, 
        ['compound' => true] 
       ); 

      } 
     }; 

     $builder->get('payment')->addEventListener(
      FormEvents::PRE_SET_DATA, 
      function (FormEvent $event) use ($formModifier) { 
       $data = $event->getData(); 
       $formModifier($event->getForm(), $data); 
      } 
     ); 
    } 

    public function configureOptions(OptionsResolver $resolver) 
    { 
     $resolver->setDefaults(array(
      'multiple'   => true, 
      'expanded'   => true, 
      'class'    => 'AppBundle:OfferPayment', 
      'data_class'   => 'AppBundle\Entity\OfferPayment', 
      'translation_domain' => 'app', 
      'compound'   => true, 
     )); 
    } 

    public function getName() 
    { 
     return 'offer_payment'; 
    } 
} 

Answer 1

您需要创建要去有两个嵌入式领域的一个复选框和一个文本区域自定义表单类型

class OfferPaymentType extends AbstractType 
{ 
    public function buildForm(FormBuilderInterface $builder, array $options) 
    { 
     $builder->add('payement', 'checkbox') 
       ->add('metadata', 'textarea'); 
    } 
} 

而且在你的表格类型，你会做这样的事情

class CustomType extends AbstractType 
{ 
    public function buildForm(FormBuilderInterface $builder, array $options) 
    { 
     $builder->add('payment_method', 'collection', array(
       'type'   => new OfferPaymentType(), 
       'allow_add' => true, 
       'allow_delete' => true 
      ) 
     ); 

    } 
}