Question

我有三个字段id，image，title的实体。数据库中的所有字段都不为null.image字段用于存储文件路径。当我创建新记录时，它工作正常，图像上传到公共文件夹中。但是在编辑时记录图像字段为null，并且此值不应为null消息出现。图像字段未设置，并且在表单提交中始终为null。

我关注symfony文档https://symfony.com/doc/current/controller/upload_file.html

实体字段

/**
 * @ORM\Column(type="string", length=255)
 *
 */
private $image;

表单类型

public function buildForm(FormBuilderInterface $builder, array 
$options)
{

    $builder->add('title', TextType::class, [
        "label" => "Title"
    ])
        ->add('image', FileType::class, [
            'data_class' => null,
        ])
        ->add('save', SubmitType::class, array("label" => "Save"));

}

控制器

public function editAction(Request $request, Gallery $gallery)
{
    $em = $this->getDoctrine()->getManager();
    $file = new File($this->getParameter('gallery_directory') . '/' . 
$gallery->getImage());
    $gallery->setImage($file);
    $form = $this->createForm(GalleryType::class, $gallery);
    $form->handleRequest($request);


    if ($form->isSubmitted() && $form->isValid()) {
        $file = $form->get('image')->getData();
        $fileName = $this->generateUniqueFileName() . '.' . $file->guessExtension();

        // Move the file to the directory where brochures are stored
        try {
            $file->move(
                $this->getParameter('brochures_directory'),
                $fileName
            );
        } catch (FileException $e) {
        }
        $gallery->setImage($fileName);

        $em->persist($gallery);
        $em->flush();
    }

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

Answer 1

我无法获得在https://symfony.com/doc/current/controller/upload_file.html中上传文件的示例也无法正常工作。我修改了您的代码，使其看起来更像是我必须工作的代码。以下代码尚未经过测试，但可以使您更接近工作。

实体字段：

/**
 * @ORM\Column(type="string", length=255)
 *
 */
private $image;

// Note there is no type hint on the return value.
// Sometimes it is a string, sometimes a UploadedFile.
// php bin/console make:entity adds a type hint which must be removed.
public function getImage()
{
    return $this->image;
}

public function setImage($image): self
{
    $this->image = $image;
    return $this;
}

用于创建实体的表单类型：

public function buildForm(FormBuilderInterface $builder, array 
$options)
{
    $builder->add('title', TextType::class, [
        "label" => "Title"
    ])
        ->add('image', FileType::class)
        ->add('save', SubmitType::class, array("label" => "Save"));
}

GalleryEditType表单类型，用于编辑实体：（我不知道如何制作用于创建/编辑的组合表格。）

public function buildForm(FormBuilderInterface $builder, array 
$options)
{
    $builder->add('title', TextType::class, [
        "label" => "Title"
    ])
        ->add('image', FileType::class, [
            'required' => false,
            'mapped' => false
        ])
        ->add('save', SubmitType::class, array("label" => "Save"));
}

控制器：（对此代码我不太确定，但是您肯定需要下面的UploadedFile类型提示。）

public function editAction(Request $request, Gallery $gallery)
{
    $em = $this->getDoctrine()->getManager();

    $form = $this->createForm(GalleryEditType::class, $gallery);
    $form->handleRequest($request);

    if ($form->isSubmitted() && $form->isValid()) {

        // $file stores the uploaded image file.
        /** @var Symfony\Component\HttpFoundation\File\UploadedFile $file */
        $file = $form->get('image')->getData();
        if ($file != null) {
            // The user selected a new image.
            $fileName = $this->generateUniqueFileName() . '.' . $file->guessExtension();

            // Move the file to the directory where brochures are stored
            try {
                $file->move(
                    $this->getParameter('brochures_directory'),
                    $fileName
                );
            } catch (FileException $e) {
            }
            // Update the image property to store the image file name instead of its contents.
            $gallery->setImage($fileName);
        }
        $em->persist($gallery);
        $em->flush();

        return $this->redirectToRoute('gallery_index', [
            'id' => $gallery->getId(),
        ]);
    }

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

请在工作后发布更新的代码。谢谢！

图片字段在编辑表单提交时为空

1 个答案: