symfony4注入参数的形式

Question

我有一个业务实体和一个BusinessObject实体，当我创建一个新的BusinessObject时，我想将BusinessObject链接到当前的业务。 例如，如果我的路线是business/{id}/object/new ，那么我希望具有与Business相关的对象（由于id）。

在我的BusinessObject Controller中，我设法使用@ParamConverter来获取业务ID。 在我的BusinessObject Form中，我将HiddenType放到我的业务条目中，因为我不希望它出现，并将data设置为business_ID。 我在configureOptions中很难获得业务ID，我不知道如何从此处获取业务ID。

BusinessObject Controller（新路由） ：

/**
 * @Route("/{post_id}/new", name="business_object_new", methods="GET|POST")
 * @ParamConverter("business", options={"id" = "post_id"})
 */
public function new(Request $request,Business $business): Response
{
    $businessObject = new BusinessObject();

    $businessID = $business->getId();

    $form = $this->createForm(BusinessObjectType::class, $businessObject,array(
        'business_ID'=>$businessID,
    ));
    $form->handleRequest($request);

    if ($form->isSubmitted() && $form->isValid()) {
        $em = $this->getDoctrine()->getManager();
        $em->persist($businessObject);
        $em->flush();

        return $this->redirectToRoute('business_object_index');
    }

    return $this->render('business_object/new.html.twig', [
        'business_object' => $businessObject,
        'business'=>$business,
        'form' => $form->createView(),
    ]);
}

BusinessObjectType ：

class BusinessObjectType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
    $builder
        ->add('object',TextType::class)
        ->add('complement')
        ->add('status')
        ->add('durationExpected')
        ->add('durationAchieved')
        ->add('client')
        ->add('projectManager')
        ->add('business',HiddenType::class,array(
            'data' => $options['business_ID']

        ))
    ;
}

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults([
        'data_class' => BusinessObject::class,
        'business_ID'=>Business::class
    ]);
}
}

通过此代码，我得到了Expected argument of type "App\\Entity\\Business or null", "string" given.的错误的Expected argument of type "App\\Entity\\Business or null", "string" given. 我认为这与我的Form中的configureOptions（）函数有关

Answer 1

该方法可以是：

public function new(Request $request,Business $business): Response
{
    $businessObject = new BusinessObject();

    $form = $this->createForm(BusinessObjectType::class, $businessObject);
    $form->handleRequest($request);

    if ($form->isSubmitted() && $form->isValid()) {
        // I suppose your setter is `setBusiness`, otherwise use more suitable one
        $businessObject->setBusiness($business);
        $em = $this->getDoctrine()->getManager();
        $em->persist($businessObject);
        $em->flush();

表单生成器为：

builder
    ->add('object',TextType::class)
    ->add('complement')
    ->add('status')
    ->add('durationExpected')
    ->add('durationAchieved')
    ->add('client')
    ->add('projectManager');   // No business field

另一种选择是将 BusinessType表单嵌入到BusinessObjectType ，您可以在此处阅读有关表单嵌入的更多信息。