我已在Symfony 2.0项目中设置了一个事件订阅者,该项目由表单类型用于确定是否包含字段,如讨论here。
然而,为了确定是否包含,我想将实体值与路由参数进行比较。
我知道通过讨论here的类型传递变量,但我更愿意直接从订阅者访问。
我的表格类型:
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilder;
use Odst\Bundle\DyfieldBundle\Form\EventListener\DyfieldFilterSubscriber;
class DyStringFieldType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$subscriber = new DyfieldFilterSubscriber($builder->getFormFactory());
$builder->addEventSubscriber($subscriber);
}
public function getDefaultOptions(array $options)
{
return array(
'data_class' => 'Odst\Bundle\DyfieldBundle\Entity\DyStringField',
);
}
public function getName()
{
return 'dyStringField';
}
}
我的活动订阅者:
use Symfony\Component\Form\Event\DataEvent;
use Symfony\Component\Form\FormFactoryInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Form\FormEvents;
use Odst\Bundle\DyfieldBundle\Form\Type\DyStringFieldType;
class DyfieldFilterSubscriber implements EventSubscriberInterface
{
private $factory;
public function __construct(FormFactoryInterface $factory)
{
$this->factory = $factory;
}
public static function getSubscribedEvents()
{
return array(FormEvents::PRE_SET_DATA => 'preSetData');
}
public function preSetData(DataEvent $event)
{
$data = $event->getData();
$form = $event->getForm();
if (null === $data) {
return;
}
$fieldPageNameId = $data->getModel()->getDyFieldSet()->getDyFieldPage()->getNameId();
// This doesn't work, but this is where I need to get the parameter
$pageNameId = $this->get('request')->get('pageNameId');
if ($pageNameId == $fieldPageNameId) {
$form->add($this->factory->createNamed('text', 'value'));
}
}
}
非常感谢你的帮助。
答案 0 :(得分:2)
您可以将DyfieldFilterSubscriber作为服务并在构造函数或setter中注入Request。
编辑:
public function __construct(DyfieldFilterSubscriber $event)
{
$this->event = $event;
}
public function __construct(Request $request)
{
$this->request = $request;
}
public function setFormFactory(FormFactoryInterface $formFactory)
{
$this->formFactory = $formFactory;
}
services:
your_form_type:
class: FQCN\To\Your\FormType
arguments: [@dy_field_filer_subscriber]
dy_field_filer_subscriber:
class: FQCN\To\Your\Class
arguments: [@request]
最好的关注