Question

我想根据我在之前的4个下拉列表中做出的选择来过滤下拉列表。我的表单类型如下：

class DocumentDeactivationType extends AbstractType {

  public function buildForm(FormBuilderInterface $builder, array $options)
  {

    $builder
    ->add('type', 'choice', array('choices' => array(
        'document_types.contract' => 1,
        'document_types.general'=>2,
        'document_types.goodwill_policy'=>3,
        'document_types.pricesheet'=>4,
        'document_types.yq_update'=>5,
        'document_types.contract_addendum'=>6),
        'choices_as_values' => true, 'label' => 'label.types',
        'expanded' => false, 'multiple' => true,
        'label' => 'label.type', 'required' => false,
        'translation_domain' => 'Documents'))

    -> add('status', 'entity', array(
      'class' => 'DocumentBundle:Status', 'property' => 'name',
      'choice_label' => 'translationkey', 'label' => 'Status',
      'expanded' => false, 'multiple' => true, 'required' => false,
      'translation_domain' => 'Documents',
      'choice_translation_domain' => 'Documents',))


    ->add('airlines', 'entity', array(
      'class' => 'AppBundle:Airline', 'property' => 'id',
      'query_builder' => function (EntityRepository $er){
       return $er->createQueryBuilder('a')
       ->addOrderBy('a.id', 'ASC');
       },
      'choice_value' => 'id',
      'choice_label' => 'id', 'label' => 'label.airlines',
      'expanded' => false, 'multiple' => true, 'required' => false,
      'translation_domain' => 'Documents'))

    ->add('markets', 'entity', array(
        'class' => 'AppBundle:Market', 'property' => 'id',
        'query_builder' => function (EntityRepository $er){
         return $er->createQueryBuilder('m')
         ->addOrderBy('m.id', 'ASC');
         },
        'choice_value' => 'id',
        'choice_label' => 'id', 'label' => 'label.markets',
        'expanded' => false, 'multiple' => true, 'required' => false,
        'translation_domain' => 'Documents'))

    ->add('documentlist', EntityType::class, array(
        'class' => 'DocumentBundle:Document',
        'property' => 'name',
        'expanded' => false, 'multiple' => true,
        'label' => 'label.document_list',
        'empty_value' => "Select document",
        'required' => false,
        'mapped' => false,
        'translation_domain' => 'Documents'));

  $builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) use ($builder)
      {
        $form = $event->getForm();
        $data = $event->getData();
        $markets = $data['markets'];
        $status = $data['status'];
        $type = $data['type'];
        $airlines = $data['airlines'];
    $builder
    ->add('documentlist', EntityType::class, array(
        'class' => 'DocumentBundle:Document',
        'property' => 'name',
        'expanded' => false, 'multiple' => true,
        'label' => 'label.document_list',
        'empty_value' => "Select document",
        'required' => false,
        'mapped' => false,
        'translation_domain' => 'Documents',

        'query_builder' => function (EntityRepository $er) use ($markets, $status, $type, $airlines){
        return $er->createQueryBuilder('e')
        ->where('e.markets IN (:markets)')
        ->andWhere('e.status IN (:status)')
        ->andWhere('e.airlines IN (:airlines)')
        ->andWhere('e.products IN (:products)')
        ->setParameter('markets', $markets)
        ->setParameter('status', $status)
        ->setParameter('airlines', $airlines)
        ->setParameter('type', $type);
      },
      ));
  });
}
    public function getName()
    {
        return 'document_deactivation';

    }
  }

我不确定它是否显而易见：'documentlist'下拉列表已经包含了来自文档实体的所有值以及我尝试通过PRE_SUBMIT EventListener实现的更新其值依赖于来自其他4个下拉菜单。 4个下拉菜单有一个“应用”按钮，所以我不需要ajax请求，但我猜是Post / PreSubmit事件？我的问题：

从“过滤器”下拉列表中选择某些值时，例如忽略“市场”，我得到错误“未定义的市场指数”，这可能是因为行市场= $ data ['markets'] - ＆gt;所以我想要的是能够只过滤某些类型，而不是被迫选择所有类型。
更新文档列表下拉列表根本不起作用。我甚至不认为，查询构建器正在做任何事情。但我不确定这是否与我的FormEvent有关，也可能与我在表单中添加下拉列表的方式有关。

如何在我的树枝文件中呈现所有内容：

    {% block filterContent %}
  {{ form_start(form) }}
  {{ form_row(form.type) }}
  {{ form_row(form.status) }}
  {{ form_row(form.markets)}}
  {{ form_row(form.airlines)}}
    <input type="submit" class="btn-primary btn btn-xs" value="Apply Filter" />

  <br clear="all" />
{% endblock %}

{% block content %}

{{ form_label(form.documentlist) }}
{{ form_widget(form.documentlist) }}
{{ form_end(form) }} </br>

<div class="row">
  {% include 'AppBundle::HelpSubmitButton.html.twig' with { 'buttonName': 'label.submit'|trans } %}
</div>
{% endblock content %}

Answer 1

1）在$ market附近添加if语句

if (isset($data['markets'])) {$markets = $data['markets'];}

和

'query_builder' => function (EntityRepository $er) use ($markets, $status, $type, $airlines) {
    $query =  $er->createQueryBuilder('e')
    ->where('e.status IN (:status)')
    ->andWhere('e.airlines IN (:airlines)')
    ->andWhere('e.products IN (:products)')
    ->setParameter('markets', $markets)
    ->setParameter('status', $status)
    ->setParameter('airlines', $airlines)
    ->setParameter('type', $type);
  };

   if (isset($data['markets'])) {
     $query->andWhere('e.markets IN (:markets)')
   }

2）我相信您需要通过AJAX更新列表，因为PRE_SUBMIT将在submit操作之前发生，因此它将使用documentlist中的所有值。

表单提交后，Symfony使用查询构建器更改下拉列表值

1 个答案: