使用 sonata admin 上传图片

Question

参见上面的编辑

我认为这个问题很容易解决，但我现在找不到任何明确的答案。我希望你能有一个想法。

我正在尝试使用 sonata admin 上传图片。

在我的实体中我有这个字段

/**
 * @ORM\Column(type="string", length=2000)
 * @Assert\File(mimeTypes={ "image/png", "image/jpeg" })
 */
private $image;

当我转到奏鸣曲管理表单视图时。上传文件按钮在那里，定义如下

$formMapper->add('image', FileType::class);

但是当我尝试发送表单时，出现了这个错误

The form's view data is expected to be an instance of class Symfony\Component\HttpFoundation\File\File, but is a(n) string. You can avoid this error by setting the "data_class" option to null or by adding a view transformer that transforms a(n) string to an instance of Symfony\Component\HttpFoundation\File\File.

我暗示这是由于学说字符串类型。但我认为学说没有 "File" 类型。

感谢您的帮助。

编辑：

考虑到评论中提供的link，这是新的错误

The current field image is not linked to an admin. Please create one for the target entity : ``

<?php

  namespace App\Entity;
  // src/Entity/Image.php

  class Image{
  const SERVER_PATH_TO_IMAGE_FOLDER = '/public/images';

  /**
   * Unmapped property to handle file uploads
   */
  private $file;

  /**
   * @param UploadedFile $file
   */
  public function setFile(UploadedFile $file = null)
  {
      $this->file = $file;
  }

  /**
   * @return UploadedFile
   */
  public function getFile()
  {
      return $this->file;
  }

  /**
   * Manages the copying of the file to the relevant place on the server
   */
  public function upload()
  {
      // the file property can be empty if the field is not required
      if (null === $this->getFile()) {
          return;
      }

     // we use the original file name here but you should
     // sanitize it at least to avoid any security issues

     // move takes the target directory and target filename as params
     $this->getFile()->move(
         self::SERVER_PATH_TO_IMAGE_FOLDER,
         $this->getFile()->getClientOriginalName()
     );

     // set the path property to the filename where you've saved the file
     $this->filename = $this->getFile()->getClientOriginalName();

     // clean up the file property as you won't need it anymore
     $this->setFile(null);
 }

 /**
  * Lifecycle callback to upload the file to the server.
  */
 public function lifecycleFileUpload()
 {
     $this->upload();
 }

 /**
  * Updates the hash value to force the preUpdate and postUpdate events to fire.
  */
 public function refreshUpdated()
 {
    $this->setUpdated(new \DateTime());
 }

 // ... the rest of your class lives under here, including the generated fields
 //     such as filename and updated
 }

在我的 ForumAdmin 中，现在我有

protected function configureFormFields(FormMapper $formMapper)
{
    $formMapper->add('name', TextType::class);
    $formMapper->add('description', TextAreaType::class);
    $formMapper->add('weight', IntegerType::class);
    $formMapper->add('category', EntityType::class, [
        'class' => Category::class,
        'choice_label' => 'name',
    ]);
    $formMapper
        ->add('image', AdminType::class)
    ;
}

protected function configureDatagridFilters(DatagridMapper $datagridMapper)
{
    $datagridMapper->add('name');
    $datagridMapper->add('category');
}

protected function configureListFields(ListMapper $listMapper)
{
    $listMapper->addIdentifier('name');
    $listMapper->addIdentifier('description');
    $listMapper->addIdentifier('category');
    $listMapper->addIdentifier('weight');
    $listMapper->addIdentifier('createdAt');
    $listMapper->addIdentifier('updatedAt');
    $listMapper->addIdentifier('image');
}

public function prePersist($object)
{
    parent::prePersist($object);
    $this->manageEmbeddedImageAdmins($object);
    if($object instanceof Forum){
        $object->setCreatedAt(new \DateTime('now'));
        $object->setUpdatedAt(new \DateTime('now'));
        $object->setStatus("NO_NEW");
    }

}

public function preUpdate($page)
{
    $this->manageEmbeddedImageAdmins($page);
}

private function manageEmbeddedImageAdmins($page)
{
    // Cycle through each field
    foreach ($this->getFormFieldDescriptions() as $fieldName => $fieldDescription) {
        // detect embedded Admins that manage Images
        if ($fieldDescription->getType() === 'sonata_type_admin' &&
            ($associationMapping = $fieldDescription->getAssociationMapping()) &&
            $associationMapping['targetEntity'] === 'App\Entity\Image'
        ) {
            $getter = 'get'.$fieldName;
            $setter = 'set'.$fieldName;

            /** @var Image $image */
            $image = $page->$getter();

            if ($image) {
                if ($image->getFile()) {
                    // update the Image to trigger file management
                    $image->refreshUpdated();
                } elseif (!$image->getFile() && !$image->getFilename()) {
                    // prevent Sf/Sonata trying to create and persist an empty Image
                    $page->$setter(null);
                }
            }
        }
    }
}

我也有这个 ImageAdmin，即使我不明白它为什么有用

final class ImageAdmin extends AbstractAdmin{
protected function configureFormFields(FormMapper $formMapper)
{
    $formMapper
        ->add('image', FileType::class);
}

public function prePersist($image)
{
    $this->manageFileUpload($image);
}

public function preUpdate($image)
{
    $this->manageFileUpload($image);
}

private function manageFileUpload($image)
{
    if ($image->getFile()) {
        $image->refreshUpdated();
    }
}

// ...
}

Answer 1

The current field image is not linked to an admin. Please create one for the target entity : ``

要修复此错误，您需要像这样在文件 sonata_admin.yaml 中添加服务：

services:
...
   admin.image:
            class: App\Admin\ImageAdmin
            arguments: [~, App\Entity\File, ~]
            tags:
                - { name: sonata.admin, manager_type: orm, label: 'admin.image' }
            public: true

使用 sonata admin 上传图片

Image upload with sonata admin

symfony

doctrine-orm

sonata-admin

symfony4