如何在SonataAdminBundle的Blog實體中上傳？

Question

我是新的symfony，我嘗試在SonataAdminBundle中上傳img。我參考了以下文檔： http ://sonata-project.org/bundles/admin/master/doc/cookbook/recipe_file_uploads.html但出現錯誤：

可捕獲的致命錯誤：傳遞給MyBlogBu​​ndle \\ Entity \\ Blog :: setFile（）的參數1必須是MyBlogBu​​ndle \\ Entity \\ UploadedFile的實例，已給出Symfony \\ Component \\ HttpFoundation \\ File \\ UploadedFile的實例，在C：\\ OpenServer \\ domains中調用\\ Symfony.test \\ vendor \\ symfony \\ symfony \\ src \\ Symfony \\ Component \\ PropertyAccess \\ PropertyAccessor.php在第442行並已定義

有人可以幫我嗎？

我的博客實體：//src/MyBLogBundle/Entity/Blog.php類Blog {

const SERVER_PATH_TO_IMAGE_FOLDER = 'src/MyBlogBundle/Resources/public/images';

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

/**
 * @var integer
 *
 * @ORM\Column(name="id", type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 */
private $id;

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

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

/**
 * @var string
 *
 * @ORM\Column(name="text", type="text")
 */
private $text;

/**
 * @var \DateTime
 *
 * @ORM\Column(name="createDate", type="datetime")
 */
private $createDate;

/**
 * @var \DateTime
 *
 * @ORM\Column(name="updateDate", type="datetime")
 */
private $updateDate;

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

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

/**
 *
 * @ORM\OneToMany(targetEntity="Comment",mappedBy="blog")
 */
private $comment;

/**
 * Get id
 *
 * @return integer 
 */
public function getId() {
    return $this->id;
}

/**
 * Set author
 *
 * @param string $author
 * @return Blog
 */
public function setAuthor($author) {
    $this->author = $author;

    return $this;
}

/**
 * Get author
 *
 * @return string 
 */
public function getAuthor() {
    return $this->author;
}

/**
 * Set title
 *
 * @param string $title
 * @return Blog
 */
public function setTitle($title) {
    $this->title = $title;

    return $this;
}

/**
 * Get title
 *
 * @return string 
 */
public function getTitle() {
    return $this->title;
}

/**
 * Set text
 *
 * @param string $text
 * @return Blog
 */
public function setText($text) {
    $this->text = $text;

    return $this;
}

/**
 * Get text
 *
 * @return string 
 */
public function getText($count = NULL) {
    if ($count != NULL) {
        $arr = explode(' ', $this->text);
        $arr = array_slice($arr, 0, $count);
        $this->text = implode(' ', $arr) . '...';
    }
    return $this->text;
}

/**
 * Set createDate
 * @ORM\PrePersist
 * @param \DateTime $createDate
 * @return Blog
 */
public function setCreateDate() {
    $this->createDate = new \DateTime();

    return $this;
}

/**
 * Get createDate
 *
 * @return \DateTime 
 */
public function getCreateDate() {
    return $this->createDate;
}

/**
 * Set updateDate
 * @ORM\PreUpdate
 * @param \DateTime $updateDate
 * @return Blog
 */
public function setUpdateDate() {
    $this->updateDate = new \DateTime();
    return $this;
}
/**
 * Get updateDate
 *
 * @return \DateTime 
 */
public function getUpdateDate() {
    return $this->updateDate;
}

/**
 * Set image
 *
 * @param string $image
 * @return Blog
 */
public function setImage($image) {
    $this->image = $image;

    return $this;
}
/**
 * Get image
 *
 * @return string 
 */
public function getImage() {
    return $this->image;
}

/**
 * Set tag
 *
 * @param string $tag
 * @return Blog
 */
public function setTag($tag) {
    $this->tag = $tag;

    return $this;
}

/**
 * Get tag
 *
 * @return string 
 */
public function getTag() {
    return $this->tag;
}

public function __construct() {
    $this->comment = new ArrayCollection();
    $this->updateDate = new \DateTime();
}

/**
 * Add comment
 *
 * @param \MyBlogBundle\Entity\Comment $comment
 * @return Blog
 */
public function addComment(\MyBlogBundle\Entity\Comment $comment) {
    $this->comment[] = $comment;

    return $this;
}

/**
 * Remove comment
 *
 * @param \MyBlogBundle\Entity\Comment $comment
 */
public function removeComment(\MyBlogBundle\Entity\Comment $comment) {
    $this->comment->removeElement($comment);
}

/**
 * Get comment
 *
 * @return \Doctrine\Common\Collections\Collection 
 */
public function getComment() {
    return $this->comment;
}

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

/**
 * Get 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(
            Image::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("now"));
}

}

我的BlogAdmin：命名空間MyBlogBu​​ndle \\ Admin;

use Sonata\AdminBundle\Admin\Admin;
use Sonata\AdminBundle\Datagrid\ListMapper;
use Sonata\AdminBundle\Datagrid\DatagridMapper;
use Sonata\AdminBundle\Form\FormMapper;

class BlogAdmin extends Admin
{
    protected $baseRouteName = 'MyBlogBundle\Entity\BlogAdmin'; 
    protected $baseRoutePattern = 'blog_admin';  

    protected function configureFormFields(FormMapper $formMapper)
    {
        $formMapper
            ->add('title', 'text', array('label' => 'Blog Title'))
            ->add('tag','text')
            ->add('file', 'file', array('required' => false))
            ->add('text','textarea') //if no type is specified, SonataAdminBundle tries to guess it
            ->add('author')
        ;
    }
    protected function configureDatagridFilters(DatagridMapper $datagridMapper)
    {
        $datagridMapper
            ->add('title')
            ->add('author')
        ;
    }
    protected function configureListFields(ListMapper $listMapper)
    {
        $listMapper
            ->addIdentifier('title')
            ->add('author')
        ;
    }

    public function prePersist($image) {
        $this->manageFileUpload($image);
    }
    public function preUpdate($image) {
        $this->manageFileUpload($image);
    }
    private function manageFileUpload($image) {
        if ($image->getFile()) {
            $image->refreshUpdated();
        }
    }
}

和Blog.orm.yml

src / MyBlogBu​​ndle / Resources / config / Doctrine / Image.orm.yml

MyBlogBundle\Entity\Image:
  type: entity
  repositoryClass: MyBlogBundle\Entity\Repositories\ImageRepository
  table: images
  id:
    id:
      type:         integer
      generator:    { strategy: AUTO }
  fields:
    filename:
      type:         string
      length:       100
    updated:        # changed when files are uploaded, to force preUpdate and postUpdate to fire
      type:         datetime
      nullable:     true
    # ... other fields ...
  lifecycleCallbacks:
      prePersist:   [ lifecycleFileUpload ]
      preUpdate:    [ lifecycleFileUpload ]

Answer 1

您忘記為UploadedFile類添加use語句，必須添加：

src / MyBLogBundle / Entity / Blog.php

<?php
use Symfony\Component\HttpFoundation\File\UploadedFile;

class Blog
{
}

如果UploadedFile不在文件的默認名稱空間中，則需要指定其位置（當前：src / MyBLogBundle / Entity）