[英]Unset fields in Symfony form after submit
在我的Symfony項目(2.7)中,我有一個實體Apartment
,具有很多屬性。 其中之一是Town
。 Town
是其他學說實體,它們具有City
實體,而City
具有State
。
在我的Apartment
表格中,我有3個選擇。 對於Town
, City
State
。 但是當我想要保存時,我只想要Town
。
...
$builder->add('town', 'entity', array(
'label' => 'Town',
'choices' => $towns,
'class' => "AppBundle\Entity\Town"
));
$builder->add('city', 'entity', array(
'label' => 'City',
'choices' => $cities,
'class' => "AppBundle\Entity\City"
));
$builder->add('state', 'entity', array(
'label' => 'States',
'choices' => $states,
'class' => "AppBundle\Entity\State"
));
...
是否可以取消我不想保存實體Apartment的多余字段?
if ($request->getMethod() == 'POST') {
$form->handleRequest($request);
if ($form->isValid()) {
//I want to unset State and City entities.
$apartment = $form->getData();
...
}
我有這個錯誤:
Neither the property "state" nor one of the methods "addState()"/"removeState()", "setState()", "state()", "__set()" or "__call()" exist and have public access in class "AppBundle\Entity\Apartment".
提交后,表單數據將無法更改。 但是您可以在提交定稿之前附加一個事件偵聽器來執行此操作:
# Don't forget these
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormEvent;
# ...
$builder->add('city', 'entity', array(
'label' => 'City',
'choices' => $cities,
'class' => "AppBundle\Entity\City",
'mapped' => FALSE // <-- This is important
));
$builder->addEventListener(FormEvents::POST_SUBMIT, function(FormEvent $event){
$data = $event->getData();
$data['city'] = NULL;
$data['state'] = NULL;
# We need this because of PHP's copy on write mechanism.
$event->setData($data);
});
如果您需要在驗證過程之前將它們設置為NULL
, POST_SUBMIT
為SUBMIT
。
現在,在控制器內調用form->getData()
將返回NULL
值。
希望這可以幫助...
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