问题描述
我尝试应用文档 https://symfony.com/doc/current/form/dynamic_form_modification.html，但是当我收到第一个选择 categoryLevel1Id 以收集第二个选择 categoryLevel2Id 中的选项的结果时遇到了一些麻烦。
我是 Doctrine 的新手，我认为有些事情让我无法理解。
属性路径中给出的“int”、“object”类型的预期参数 "categoryLevel1Id"
$builder->add('categoryLevel1Id',EntityType::class,[
'class' => CategoryLevel1::class,'label' => 'contrib.create.category_level1','placeholder' => 'contrib.create.category_level1_placeholder','query_builder' => function (EntityRepository $er) {
return $er->createqueryBuilder('c')
->andWhere("c.langId = ?1")
->andWhere("c.validated = ?2")
->setParameter(1,$this->langService->getLangIdByLang(locale_get_default()))
->setParameter(2,1);
},'choice_label' => 'title','choice_attr' => function($choice,$key,$value) {
return ['class' => 'text-dark'];
},]);
参数 2 传递给 App\Form\Front\Situ\CreateSituFormType::App\Form\Front\Situ{closure}() 必须是 App\Entity\CategoryLevel1 的一个实例或 null，int 给定， 在第 147 行的 ..\src\Form\Front\Situ\CreateSituFormType.PHP 中调用
$categories = $this->categoryLevel1Repository->findLocaleCategories();
$categoriesOptions = [];
foreach ($categories as $categorie) {
$categoriesOptions[] = [
$categorie['title'] => $categorie['id'],];
}
$builder->add('categoryLevel1Id',ChoiceType::class,[
'choices' => call_user_func_array('array_merge',$categoriesOptions),'label_attr' => ['class' => ''],]);
我尝试改为调用 CategoryLevel1Type::class，但是当代码来到 $formModifier = function (FormInterface $form.. 时它不起作用，或者我不知道改编代码！
这是我的 buildForm() 之前有任何 __construct ：
public function buildForm(FormBuilderInterface $builder,array $options)
{
$builder
->add('title',TextType::class,[
'label' => 'contrib.create.title','attr' => [
'class' => 'mb-md-4','placeholder' => 'contrib.create.title_placeholder'
],])
->add('description',TextareaType::class,[
'label' => 'contrib.create.description','attr' => [
'rows' => '5','placeholder' => 'contrib.create.description_placeholder',],])
;
// Check locale categories level 1
$categories = $this->categoryLevel1Repository->findLocaleCategories();
// If no category,create it and its subcategory
if (empty($categories)) {
$builder
->add('categoryLevel1Id',CreateCategoryLevel1Type::class,[
'label' => 'category.create.category_level1','label_attr' => ['class' => 'pt-0'],])
->add('categoryLevel2Id',CreateCategoryLevel2Type::class,[
'label' => 'category.create.category_level2',])
;
} else {
$builder->add('categoryLevel1Id',]);
$formModifier = function (FormInterface $form,CategoryLevel1 $categoryLevel1 = null) {
$categoriesLevel2 = null === $categoryLevel1 ? [] :
$categoryLevel1->getGategoriesLevel2();
$form->add('categoryLevel2Id',[
'class' => 'App\Entity\CategoryLevel2','label' => 'contrib.create.category_level2','placeholder' => 'contrib.create.category_level2_placeholder','choices' => $categoriesLevel2,]);
};
$builder->addEventListener(
FormEvents::PRE_SET_DATA,function (FormEvent $event) use ($formModifier) {
// this would be your entity,i.e. SportMeetup
$data = $event->getData();
$formModifier($event->getForm(),$data->getCategoryLevel1Id());
}
);
$builder->get('categoryLevel1Id')->addEventListener(
FormEvents::POST_SUBMIT,function (FormEvent $event) use ($formModifier) {
// It's important here to fetch $event->getForm()->getData(),as
// $event->getData() will get you the client data (that is,the ID)
$categoryLevel1 = $event->getForm()->getData();
// since we've added the listener to the child,we'll have to pass on
// the parent to the callback functions!
$formModifier($event->getForm()->getParent(),$categoryLevel1); // (Error code 2 here)
}
);
}
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => Situ::class,'translation_domain' => 'user_messages',]);
}
然后是具有关系的实体：
类别级别 1：
.../...
/*
* @ORM\OnetoMany(targetEntity="App\Entity\CategoryLevel2",cascade={"persist","remove"},mappedBy="categoryLevel1Id")
*/
protected $categoriesLevel2;
/*
* @ORM\OnetoMany(targetEntity=Situ::class,mappedBy="categoryLevel1")
*/
protected $situs;
public function __construct()
{
$this->categoriesLevel2 = new ArrayCollection();
$this->situs = new ArrayCollection();
}
.../...
public function getGategoriesLevel2()
{
return $this->categoriesLevel2;
}
public function addCategoryLevel2(CategoryLevel2 $categoryLevel2)
{
$this->categoriesLevel2->add($categoryLevel2);
$categoryLevel2->setCategoryLevel1($this);
}
public function getSitus()
{
return $this->situs;
}
public function addSitu(Situ $situ)
{
$this->situs->add($situ);
$situ->setCategoryLevel1($this);
}
类别级别 2：
.../...
/**
* @ORM\Column(type="integer")
* @ORM\ManyToOne(targetEntity="App\Entity\CategoryLevel1",inversedBy="categoriesLevel2")
*/
private $categoryLevel1Id;
/**
* @ORM\Column(type="boolean")
*/
private $validated;
/**
* @ORM\OnetoMany(targetEntity=Situ::class,mappedBy="categoryLevel2")
*/
protected $situs;
public function __construct()
{
$this->situs = new ArrayCollection();
}
.../...
public function getSitus()
{
return $this->situs;
}
public function addSitu(Situ $situ)
{
$this->situs->add($situ);
$situ->setCategoyLevel2($this);
}
.../...
现场：
.../...
/**
* @ORM\Column(type="integer")
*/
private $categoryLevel1Id;
/**
* @ORM\Column(type="integer")
*/
private $categoryLevel2Id;
/**
* @ORM\ManyToOne(targetEntity=CategoryLevel1::class,inversedBy="situs")
*/
protected $categoryLevel1;
/**
* @ORM\ManyToOne(targetEntity=CategoryLevel2::class,inversedBy="situs")
*/
protected $categoryLevel2;
.../...
进入 SituController，无非是：
public function createSitu(Request $request,User $user): Response
{
$situ = new Situ();
$form = $this->createForm(CreateSituFormType::class,$situ);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
// Todo
}
return $this->render('front/situ/new.html.twig',[
'situ' => $situ,'form' => $form->createView(),]);
}
解决方法
您可能对这 2 个实体（CategoryLevel2 和 Situ）感到困惑：
- 在
CategoryLevel2中是App\Entity\CategoryLevel1类型 - 在
Situ中，它是integer类型
您不能在 EntityType::class 中使用 $builder->add('categoryLevel1Id',EntityType::class,[，因为在您的 CreateSituFormType 中，字段 categoryLevel1Id 是一个整数而不是实体。
在您的 Situ 实体中，您可能会更改：
/**
* @ORM\Column(type="integer")
*/
private $categoryLevel1Id;
进入：
/**
* @ORM\ManyToOne(targetEntity="App\Entity\CategoryLevel1")
*/
private $categoryLevel1Id;
解决问题。