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我在 Twig 中渲染表单时遇到问题。我正在尝试嵌入一组表单。当我渲染集合时，它没有显示，而显示了表单的名称。目的是制作带有添加按钮的表单，以便在运行时为集合的每个元素添加表单。我看了一下 Symfony Docs，我想我是一步一步地跟着它的。

这是我的控制器：

function new_resultAction($id)
{
    $em = $this->getDoctrine()->getEntityManager();

    $test = $em->getRepository('LadelaOdeskTesterBundle:Test')->find($id);
    $categories =  
      $em->getRepository('LadelaOdeskTesterBundle:Category')->findByTest($test);
    if (!$test) {
        throw $this->createNotFoundException('Unable to find Test entity.');
    } 

    $resultCategory = new Category();


    $form = $this->createForm(new CategoryType() , $resultCategory);

    $request = $this->getRequest();

    if ('POST' === $request->getMethod()) {

        $form->bindRequest($request);

        if ($form->isValid()) {

            $em->persist($resultCategory);                
            $em->flush();

            $this->get('session')->setFlash('success', 'New result Categories were 
          saved!');
            return $this->redirect($this->generateUrl('questions', array(
                'id' => $resultCategory->getId(),
            )));
        }
    }                 
  return array(
        'test' => $test,
        'categories' =>$categories,

        'form' => $form->createView(), 


      );

}

我的表格：

 class ResultCategoryType extends AbstractType
    {
  public function buildForm(FormBuilderInterface $builder, array $options)
   {
    $builder->add('value', 'integer');
    $builder->add('category', 'entity', array(
            'class'         => 'Ladela\OdeskTesterBundle\Entity\Category',
            'query_builder' => function ($repository) { return 
     $repository->createQueryBuilder('p')->orderBy('p.name', 'ASC'); },
             'property' => 'name' ,
               'expanded' => false ,
               'multiple' => false , ));


 }

  public function setDefaultOptions(OptionsResolverInterface $resolver)
  {
    $resolver->setDefaults(array(
        'data_class' => 'Ladela\OdeskTesterBundle\Entity\ResultCategory'
    ));
  }

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

 class CategoryType extends AbstractType
 {
  public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('name')
        ->add('resultCategories','collection', array(
            'type' => new ResultCategoryType(),
            'allow_add' => true,
            'by_reference' => false,
            'prototype' => true,

        ))
    ;
}

public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
        'data_class' => 'Ladela\OdeskTesterBundle\Entity\Category'
    ));
}

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

}

还有我的树枝文件：

<form method="post" action="{{ path('questions',{'id': test.id })  }}" {{   
  form_enctype(form) }} >    

  <ul class="tags" data-prototype="{{ 
  form_widget(form.resultCategories.vars.prototype)|e 
   }}">
    {# iterate over each existing tag and render its only field: name #}
    {% for ResultCategory in form.resultCategories %}
        <li>{{ form_row(ResultCategory.category) }}</li>
    {% endfor %}
<a href="#" class="add_tag_link">Add a tag</a>

</ul>        
{{ form_rest(form) }}{# form.items's prototype is rendered twice #}
{{ form_errors(form) }}
<input type="submit" value ="add" />
</form> 

 {% block javascripts %}


<script type="text/javascript">
// Get the div that holds the collection of tags
var collectionHolder = $('ul.tags');

 // setup an "add a tag" link
   var $addTagLink = $('<a href="#" class="add_tag_link">Add a tag</a>');
  var $newLinkLi = $('<li></li>').append($addTagLink);

jQuery(document).ready(function() {
// add the "add a tag" anchor and li to the tags ul
collectionHolder.append($newLinkLi);

$addTagLink.on('click', function(e) {
    // prevent the link from creating a "#" on the URL
    e.preventDefault();

    // add a new tag form (see next code block)
    addTagForm(collectionHolder, $newLinkLi);
   });
 });
  // Get the div that holds the collection of tags
 var collectionHolder = $('ul.tags');

  // setup an "add a tag" link
 var $addTagLink = $('<a href="#" class="add_tag_link">Add a tag</a>');
 var $newLinkLi = $('<li></li>').append($addTagLink);

  jQuery(document).ready(function() {
 // add the "add a tag" anchor and li to the tags ul
  collectionHolder.append($newLinkLi);

 $addTagLink.on('click', function(e) {
    // prevent the link from creating a "#" on the URL
    e.preventDefault();

    // add a new tag form (see next code block)
    addTagForm(collectionHolder, $newLinkLi);
   });
  });

  {% endblock %}
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1 回答 1

2

由于您没有启动它，因此不会呈现表单集合！请参阅官方文档。有用于创建标签表单的“虚拟”标签对象。

于 2012-11-14T13:41:51.983 回答