Symfony：如何將字段表單添加到孩子？

Question

我有一個字段類型實體呈現爲複選框，我想爲每個複選框添加一個textarea類型的字段，我該怎麼做？

代碼：

// 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

您需要創建要去有兩個嵌入式領域的一個複選框和一個文本區域自定義表單類型

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

而且在你的表格類型，你會做這樣的事情

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 
      ) 
     ); 

    } 
}