如何在symfony中改變表單字段值2

Question

我有一個表格如下圖所示：

class ItemType extends AbstractType 
{ 
    public function buildForm(FormBuilderInterface $builder, array $options) 
    { 
     $builder 
      // ... 
      ->add('tags','text',array(
       'required' => false, 
       'attr' => array('name' => 'tags'), 
       'mapped' => false)) 
     ; 
    } 

    public function setDefaultOptions(OptionsResolverInterface $resolver) 
    { 
     $resolver->setDefaults(array(
      'data_class' => 'MyBundle\ItemBundle\Entity\Item', 
      'cascade_validation' => true, 
     )); 
    } 
} 

我的編輯操作

public function editAction(Request $request, $id) { 
    $em = $this->getDoctrine()->getManager(); 
    $entity = $em->getRepository('MyBundleItemBundle:Item')->find($id); 
    $form = $this->createForm(new ItemType(), $entity); 
    //$form->get('tags')->setValue('test text'); 
    // ^- this is what i would like to do -^ 
    // ... 
} 

雖然我編輯的項目，我怎樣才能改變表單字段值內部控制器在渲染之前？

Answer 1

您可以使用setData()設置在Symfony的表單字段中的數據，這樣的：

$form = $formBuilder->getForm(); 

$form->get('firstname')->setData('John'); 

Answer 2

class ItemType extends AbstractType 
{ 
    public function buildForm(FormBuilderInterface $builder, array $options) 
    { 
     $builder 
      ... 
      ->add('tags','text',array(
       'required' => false, 
       'attr' => array('name' => 'tags','value'=>'newvalue'), 
       'mapped' => false)) 
     ; 
    } 

    public function setDefaultOptions(OptionsResolverInterface $resolver) 
    { 
     $resolver->setDefaults(array(
      'data_class' => 'MyBundle\ItemBundle\Entity\Item', 
      'cascade_validation' => true, 
     )); 
    } 
} 

Answer 3

您可以在控制器更改標籤值：

$request = $this->get('request'); 
    if ($request->getMethod() == 'POST') 
{ 
    $form->bind($request); 
    if $form->isValid()) 
    { 
     $entity->setTags('test'); 
     //persist ... 
    } 
}