给定以下表单类型如何在提交之前呈现我的第二个字段?
我尝试使用$form->删除但我总是会收到此错误:
Warning: Illegal offset type in isset or empty
不确定如何解决这个问题.
/**
* @param FormBuilderInterface $builder
* @param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('survey', EntityType::class, [
'class' => SurveyManager::class,
'attr' => [
'class' => 'field-change',
],
])
->add('submit', SubmitType::class, [
])
->addEventListener(
FormEvents::PRE_SUBMIT,
function (FormEvent $event) {
$form = $event->getForm();
$data = $event->getData();
$modifier = $data['survey'];
$form->add('headquarter', EntityType::class, [
'class' => HeadQuarterManager::class,
'query_builder' => function (HeadQuarterManagerRepository $er) use ($modifier) {
return $er->getHeadquarter($modifier);
},
]);
}
);
}
最佳答案 Symfony的Form组件不支持重新排列表单的字段.他们在问题
#5827和
#11241上谈到了这个功能.
您可以尝试在EventListener中删除字段提交,然后添加headquerter并提交(是的,再次).但我不确定这是否有效.
另一个解决方案是安装IvoryOrderedFormBundle.它在表单字段中添加了新选项:position.