Symfony Dynamic Form - 从嵌入式表单获取文件给出 NULL

Question

我有一个动态表单，它根据另一个字段值(链接(显示/隐藏FileType字段。 当我尝试在控制器中获取文件时，它总是给我NULL

我的用户类型：

public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('familyStatus', ChoiceType::class, [
'label' => 'Statut de famille',
'label_attr' => [
'class' => 'fg-label'
],
'attr' => [
'class' => 'sc-gqjmRU fQXahQ'
],
'required' => true,
'choices' => [
'Married' => 'M',
'Single' => 'S'
]
]);
$formModifier = function (FormInterface $form, $status = null) {
if ($status === 'M') {
$form->add('familyInfo', FamilyInfoType::class);
}
};
$builder->addEventListener(
FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($formModifier) {
$user = $event->getData();
$formModifier($event->getForm(), $user->getFamilyStatus());
}
);
$builder->get('familyStatus')->addEventListener(
FormEvents::POST_SUBMIT,
function (FormEvent $event) use ($formModifier) {
$status = $event->getForm()->getData();
$formModifier($event->getForm()->getParent(), $status);
}
);
}

我的家庭信息类型：

public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('partnerName', TextType::class, [
'label' => 'Nom du partenaire',
'label_attr' => [
'class' => 'fg-label'
],
'attr' => [
'class' => 'sc-gqjmRU fQXahQ'
],
'required' => true
])
->add('weddingProof', FileType::class, [
'label' => 'Acte de mariage',
'label_attr' => [
'class' => 'Upload-label'
],
'attr' => [
'class' => 'Upload-input',
'maxsize'     =>'4M',
'accept'      =>'image/*'
],
'required' => false,
'mapped' => false
]);
}

我的用户控制器：

/**
* @Route("/user", name="add_user", methods={"GET", "POST"})
* @param Request $request
*/
public function addUser(Request $request) {
$response = [];
$user = new User();
$form = $this->createForm(UserType::class, $user);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
if ($user->getFamilyStatus() === 'M') {
var_dump("ok");
$document = $form->get('familyInfo')->get('weddingProof')->getData();
$partnerName = $form->get('familyInfo')->get('partnerName')->getData();
var_dump($document); // NULL
var_dump($partnerName); // OK the value is displayed
die;
}
}
return $this->render("user/registration.html.twig", ['form' => $form->createView()]);
}

它适用于TextType领域，但不适用于FileType。我的表格有什么问题。

Answer 1

问题在于将 => false 选项映射到文件类型。表单未在实体的属性中设置上传的文件对象，因为它未映射。