Symfony 2中的集合只能获得最后一项

Question

我正在尝试使用来自用户的信息来填充集合，但该列表仅来自最后一项。

该系列在Libro中嵌入了Capitulo形式的集合。 LibroType是：

class LibroType extends AbstractType {

private $edita;

public function __construct($edita) {
    $this->edita = $edita;
}

/**
 * @param FormBuilderInterface $builder
 * @param array $options
 */
public function buildForm(FormBuilderInterface $builder, array $options) {
    $builder
            ->add('titulo', 'text', array("label" => "Titulo: ", "required" => true, "attr" => array('class' => 'form-control')))
            ->add('anio', 'integer', array("label" => "Año: ", "required" => true, "attr" => array('class' => 'form-control')))
            ->add('numeroPaginas', 'integer', array("label" => "Páginas: ", "required" => true, "attr" => array('min' => 1, 'class' => 'form-control'),'precision' => 0, 'constraints' => array(
                    new Regex(array(
                        'pattern' => '/^[0-9]\d*$/',
                        'message' => 'Use solo números positivos.'
                    )))))
            ->add('esPmbok', 'choice', array('choices' => array(1 => 'Sí', 0 => 'No'), 'label' => '¿Es Pmbok? ',  'multiple' => false, 'expanded' => true, 'data' => $this->edita))
            ->add('idiomas', 'entity', array('class' => 'UciBaseDatosBundle:Idiomas', 'required' => true))
            ->add('pmbok', new PmbokType(),array('required' => false))
            ->add('capitulos', 'collection', array(
                'type' => new CapituloType(),
                'by_reference' => true,
                'allow_delete' => true,
                'allow_add' => true,
                'prototype' => true,
                'label' => FALSE))
    ;
}

/**
 * @param OptionsResolverInterface $resolver
 */
public function setDefaultOptions(OptionsResolverInterface $resolver) {
    $resolver->setDefaults(array(
        'data_class' => 'Uci\Bundle\BaseDatosBundle\Entity\Libro'
    ));
}

/**
 * @return string
 */
public function getName() {
    return 'uci_bundle_basedatosbundle_libro';
}

}

VistaLibro的一部分：registrarLibro.html.twig：

  <!-- /Tabla capitulos -->

                            <table class="table demo table-bordered" id="tablaCapitulos" data-filter="#filter" 
                                   data-prototype="
                                   {% filter escape %}
                                       {{ include('UciAdministradorBundle:VistaLibro:prototipoCapitulo.html.twig', { 'form': form.capitulos.vars.prototype|e }) }}
                                   {% endfilter %}">
                                <thead>
                                    <tr>
                                        <th data-hide="phone">
                                            Numero 
                                        </th>
                                        <th data-hide="phone">
                                            Nombre
                                        </th>
                                        <th data-sort-ignore="true" data-hide="phone" data-name="Acciones"></th>
                                    </tr>
                                </thead>
                                <tbody>

                                </tbody>
                            </table>
                                <a href="#" id="capitulo_link">Añadir capítulo</a>
                            <!-- /Acaba el contenido de capitulo--> 

表格中调用的prototipoCapitulo.html.twig。

<td class="cols-xs-12 col-sm-10 col-md-8 col-lg-3">
    {{ form_widget(form.numeroCapitulo) }}
</td>
<td>
    {{ form_widget(form.nombreCapitulo) }}
</td>

动作方法：

public function aRegistrarLibroAction(Request $request) {
    $entity = new Libro();
    $em = $this->getDoctrine()->getManager();
    $form = $this->createForm(new LibroType(0), $entity);
    $form->handleRequest($request);
    $error = '';
    if ($request->getMethod() == 'POST') {
        $error = $form->getErrors();
        if ($form->isValid()) {
            $em->getConnection()->beginTransaction();
            try {

                $em->persist($entity);
                $this->guardarCapitulos($em, $entity);
                if ($entity->getEsPmbok() == 1) {
                    $this->guardarPmbok($em, $entity);
                }
                $em->flush();
                $em->commit();
                return $this->redirectToRoute('uci_administrador_indicelibro');
            } catch (Exception $e) {
                $em->getConnection()->rollback();
                $error = $e;
            }
        }
    }
    return $this->render('UciAdministradorBundle:VistaLibro:registrarLibro.html.twig', array(
                'entity' => $entity,
                'form' => $form->createView(),
                'error' => $error,
    ));
}

使用js：

function addCapitulo() {
        var collectionHolder = $('#tablaCapitulos');
        var prototype = collectionHolder.attr('data-prototype');
        var form = prototype.replace(/__name__/g, collectionHolder.children().length); //importante
        var removeFormA = $('<td href="#" onclick="addTagFormDeleteLink(event, this); "><span class="navigationSpace glyphicon glyphicon-remove" style="color: red; font-size:180%" ></span></td>');
        var newTr = $('<tr></tr>');
        newTr.append(form);
        newTr.append(removeFormA);
        collectionHolder.append(newTr);
        return prototype;
    }

    function addTagFormDeleteLink(e, elemento) {
        e.preventDefault();
        var removeFormA = elemento.parentNode;
        removeFormA.remove();
    }

        $('#capitulo_link').on('click', function (e) {
            e.preventDefault();
            addCapitulo();

        });

我感谢你能给我的任何帮助。