当我上传一个文件到symfony,它是上传它应该。我使用了symfony的文件上传教程,并对其进行了修改,以满足我的需要。

if($form->isValid())
{
    $em = $this->oStarter->getEntityManager();

    // Save file to database
    $uploadedFile = new ProfilePicture();
    $uploadedFile->setFile($formData["profile_picture"]);
    $user->setProfilePicture($uploadedFile);
    $uploadedFile->setUser($user);

    $em->persist($uploadedFile);
    $em->persist($user);

    $em->flush();

    // Other things like Twig templates etc..

此代码用于上载图像并将其设置为用户的个人资料图片。用户通过控制器中的$this->getUser()找到。当我在刷新后输出实体时,它会向我显示一个有效实体的转储,如我所料。
当我访问此用户的配置文件页时,找不到图像。当我检查mysql表时,我发现profilepicture的有效条目具有正确的id和路径。正如您所期望的那样,用户还具有对ProfilePicture的ID的引用。相反,页面显示了以下转储:
$avatar = $user->getProfilePicture();
$path = $avatar->getWebPath();
Debug::dump($avatar);


object(stdClass)#938 (8)
{
  ["__CLASS__"]=>
  string(42) "Takeabyte\CoreBundle\Entity\ProfilePicture"
  ["__IS_PROXY__"]=>
  bool(true)
  ["__PROXY_INITIALIZED__"]=>
  bool(false)
  ["id"]=>
  NULL
  ["user"]=>
  object(stdClass)#1011 (52) {
    ["__CLASS__"]=>
    string(32) "Takeabyte\CoreBundle\Entity\User"
    ["id"]=>
    int(11)
    // lots of user info
    }
  ["file"]=>
  NULL
  ["path"]=>
  NULL
  ["temp"]=>
  NULL
}

转储显示没有设置路径。即使在调用代理的函数之后,实际数据似乎也不会被加载。我做错什么了?
编辑
实体如下:
/**
 * @author Tim Cocu
 * @author Rick Slinkman
 *
 * @ORM\Entity
 * @ORM\Table(name="profilepictures")
 * @Database(target="client")
 */
class ProfilePicture extends Image
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @ORM\OneToOne(targetEntity="\Takeabyte\CoreBundle\Entity\User", mappedBy="profilePicture")
     */
    private $user;

    // accessors and mutators
}

/**
 * Description of Image
 *
 * @ORM\MappedSuperclass
 * @Database(target="client")
 * @author Rick Slinkman ([email protected])
 */
class Image extends MediaFile
{
    /**
     * @param ClassMetadata $metadata
     */
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addPropertyConstraint('file', new Assert\File(array(
            'maxSize' => 6000000,
            'mimeTypes' => array(
                "image/jpeg",
                "image/png",
                "image/gif"
            ),
        )));
    }

    // other functions
}

/**
 * Standard container of an uploaded media file
 * @author Rick Slinkman
 * @author Tim Cocu
 *
 * @ORM\HasLifecycleCallbacks
 * @ORM\MappedSuperclass
 * @Database(target="client")
 *
 * Based on:
 * http://symfony.com/doc/current/cookbook/doctrine/file_uploads.html
 */
class MediaFile
{
    /**
     * @Assert\File(maxSize="6000000")
     */
    protected $file;

    /**
     * @ORM\Column(type="string", length=255, nullable=true)
     */
    protected $path;

    /**
     * Temporary storage on file moving.
     */
    protected $temp;

    /**
     * @ORM\PrePersist()
     * @ORM\PreUpdate()
     */
    public function preUpload()
    {
        if (null !== $this->getFile())
        {
            // do whatever you want to generate a unique name
            $filename = sha1(uniqid(mt_rand(), true));
            $this->path = $filename.'.'.$this->getFile()->guessExtension();
        }
    }

    /**
     * @ORM\PostPersist()
     * @ORM\PostUpdate()
     */
    public function upload()
    {
        if (null === $this->getFile())
        {
            return;
        }

        // if there is an error when moving the file, an exception will
        // be automatically thrown by move(). This will properly prevent
        // the entity from being persisted to the database on error
        $this->getFile()->move($this->getUploadRootDir(), $this->path);

        // check if we have an old image
        if (isset($this->temp))
        {
            // delete the old image
            unlink($this->getUploadRootDir().'/'.$this->temp);
            // clear the temp image path
            $this->temp = null;
        }
        $this->file = null;
    }

    /**
     * @ORM\PostRemove()
     */
    public function removeUpload()
    {
        if ($file = $this->getAbsolutePath())
        {
            unlink($file);
        }
    }

    // other functions
}

/**
 * @author: Jordy - [email protected]
 * @author: Rick - [email protected]
 * @author: Tim - [email protected]
 * @since: 25-10-13
 *
 * @ORM\Entity
 * @ORM\Table(name="fos_user_user")
 * @Database(target="client")
 */
class User extends BaseUser
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    // Lots of data

    /**
     * @var ProfilePicture
     * @ORM\OneToOne(targetEntity="\Takeabyte\CoreBundle\Entity\ProfilePicture", inversedBy="user")
     */
    protected $profilePicture;

    // Even more data
}

最佳答案

我想大概一年前我也遇到过类似的错误。
当您进行身份验证时,您的User实体的序列化(文本)版本存储在会话中。当您访问防火墙后面的页面时,它将被反序列化并再次转换为User。但是,由于您与ProfilePicture的关系并不迫切,并且在序列化期间,此属性不会被序列化。代理对象不可序列化…
因此,当它试图从会话中检索经过身份验证的用户时,它的$profilePicture属性被设置为NULL
这是你的案子吗?
想法1:
EAGER实体中的关系设置为User
尝试设置
always_authenticate_before_granting: true在您的confir.yml
security块)
我相信这将导致安全进入数据库,并在每次访问页面时重新获取User实体…
想法2:
刷新用户实体并手动获取profilePicture。或许你也可以在会话中单独存储用户配置文件图片?

10-05 17:47