如何使用VichUploader包定制编辑表单中的图片视图

composer require vich/uploader-bundle

vich_uploader:
    db_driver: orm # 使用的数据库驱动，可以是orm或mongodb
    mappings:
        image_mapping: # 映射名称，可以自定义
            uri_prefix: /images # 图片URL的前缀
            upload_destination: '%kernel.project_dir%/public/images' # 图片上传的目标路径
            namer: vich_uploader.namer_uniqid # 图片文件名生成器
            inject_on_load: true # 在加载实体时自动注入图片
            delete_on_update: true # 在更新实体时删除旧图片

use Vich\UploaderBundle\Mapping\Annotation as Vich;

/**
 * @ORM\Entity
 * @Vich\Uploadable
 */
class YourEntity
{
    /**
     * @ORM\Column(type="string", length=255)
     */
    private $imageName;

    /**
     * @Vich\UploadableField(mapping="image_mapping", fileNameProperty="imageName")
     */
    private $imageFile;

    // Getter和Setter方法
}

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\FileType;
use Symfony\Component\Form\FormBuilderInterface;

class YourFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            // 其他字段
            ->add('imageFile', FileType::class, [
                'label' => 'Image',
                'required' => false, // 图片字段是否为必填项
            ]);
    }
}

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Annotation\Route;

class YourController extends AbstractController
{
    /**
     * @Route("/your-route", name="your_route")
     */
    public function yourAction(Request $request)
    {
        $yourEntity = new YourEntity();
        $form = $this->createForm(YourFormType::class, $yourEntity);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            // 处理图片上传
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->persist($yourEntity);
            $entityManager->flush();

            // 其他逻辑

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

        return $this->render('your_template.html.twig', [
            'form' => $form->createView(),
        ]);
    }
}