我的数据库中有 json 字符串。字符串看起来像 [{"x":"1","y":"22"}]。所以基本上它存储一个点的两个坐标。我希望能够使用 CollectionType 表单和数据转换器来编辑和保存它。
这是我的场景实体
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* Scene
*
* @ORM\Table(name="scenes", indexes={@ORM\Index(name="house_id", columns={"house_id"})})
* @ORM\Entity(repositoryClass="App\Repository\SceneRepository")
*/
class Scene
{
/**
* @var int
*
* @ORM\Column(name="scene_id", type="bigint", nullable=false, options={"unsigned"=true})
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $sceneId;
/**
* @var string
*
* @ORM\Column(name="scene_title", type="string", length=50, nullable=false)
*/
private $sceneTitle;
/**
* @var string
*
* @ORM\Column(name="points", type="text", length=65535, nullable=false)
*/
private $points;
/**
* Many scenes have one house. This is owing site
* @ORM\ManyToOne(targetEntity="House", inversedBy="scenes")
*
* @ORM\JoinColumns({
* @ORM\JoinColumn(name="house_id", referencedColumnName="house_id")
* })
*/
private $house;
/**
* @return int
*/
public function getSceneId(): int
{
return $this->sceneId;
}
/**
* @return string|null
*/
public function getSceneTitle(): ?string
{
return $this->sceneTitle;
}
/**
* @return string|null
*/
public function getPoints(): ?string
{
return $this->points;
}
/**
* @return House
*/
public function getHouse(): ?House
{
return $this->house;
}
/**
* @param string $sceneTitle
* @return Scene
*/
public function setSceneTitle(string $sceneTitle): self
{
$this->sceneTitle = $sceneTitle;
return $this;
}
/**
* @param string $points
* @return Scene
*/
public function setPoints(string $points): self
{
$this->points = $points;
return $this;
}
/**
* @param House $house
* @return Scene
*/
public function setHouse(House $house): self
{
$this->house = $house;
return $this;
}
}
这是我的 SceneType 类
namespace App\Form;
use App\Entity\Scene;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\CallbackTransformer;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Component\Form\Extension\Core\Type\CollectionType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class SceneType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('sceneTitle')
->add('points', CollectionType::class, [
'entry_type' => PointsEmbededFormType::class,
'block_name' => 'list',
])
->add('house');
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => Scene::class,
]);
}
}
我创建了 PointsEmbededFormType
namespace App\Form;
use App\Form\DataTransformer\JsonToInputTransform;
use Symfony\Component\Form\Extension\Core\Type\CollectionType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\CallbackTransformer;
use Symfony\Component\OptionsResolver\OptionsResolver;
use App\Entity\Scene;
use Symfony\Component\Form\AbstractType;
class PointsEmbededFormType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('points');
$builder->get('points')->addModelTransformer(new CallbackTransformer(
function ($pointsJson){
return json_decode($pointsJson);
},
function ($pointsArray){
return json_encode($pointsArray);
}
))->addViewTransformer(new CallbackTransformer(
function ($normalizeData){
$result =[];
foreach($normalizeData as $item)
{
$result[] =$item->x;
$result[] =$item->y;
}
return $result;
},
function ($viewData) {
$result = [];
for ($i=1; $i < count($viewData); $i+2) {
$temp['x'] = $viewData[$i];
$temp['y'] = $viewData[$i+1];
$tempArray = [$temp['x'], $temp['y']];
$result[] = json_encode($tempArray);
}
return $result;
}
));
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => Scene::class,
]);
}
}
这是来自 CseneController.php 的代码
/**
* @Route("/{sceneId}/edit", name="scene_edit", methods={"GET","POST"})
* @param Request $request
* @param Scene $scene
* @return Response
*/
public function edit(Request $request, Scene $scene): Response
{
$form = $this->createForm(SceneType::class, $scene);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$this->getDoctrine()->getManager()->flush();
return $this->redirectToRoute('scene_index');
}
return $this->render('crud/scene/edit.html.twig', [
'scene' => $scene,
'form' => $form->createView(),
]);
}
最后是我的 _form.html.twig
<ul>
{% for point in form.points %}
<li>
{{ form_widget(point) }}
</li>
{% endfor %}
</ul>
我想获得一组输入来编辑每个点的 x 和 y。但我不断收到错误：“array or (\Traversable and \ArrayAccess)”类型的预期参数，给定的“string”似乎错误在树枝的某个地方。任何帮助将不胜感激。