symfony2文件因表单错误而丢失

概述我正在使用与doctrine相关的文件上传的标准实现,根据symfony2网站教程中的示例. 当我的上传表单在验证中遇到错误,并将用户发送回带有错误消息的表单时,它会丢失选择上传的文件,但如果我var_dump我的$entity->文件我可以看到它有该文件. .. //if form is valid, do some stuff... if not: else { // 我正在使用与doctrine相关的文件上传的标准实现,根据symfony2网站教程中的示例.

当我的上传表单在验证中遇到错误,并将用户发送回带有错误消息的表单时,它会丢失选择上传的文件,但如果我var_dump我的$entity->文件我可以看到它有该文件. ..

//if form is valID,do some stuff... if not:    else {        //var_dump($entity->file); //This works,I get my file        //dIE;        //Get and check the folder chosen as parent        $entity->setFolder( $this->checkFolderID($request->request->get('folder')) ); //will cause dIE() if folder doesn't belong to this company        $folders = $this->getFolders();        return $this->render('BizTVMediaManagementBundle:Image:new.HTML.twig',array(            'entity' => $entity,'form'   => $form->createVIEw(),'folders' => $folders,'fileExists' => $fileExists,));    }

将其放入树枝视图后,文件字段中没有任何内容.

这是我的实体……

<?PHPnamespace BizTV\MediaManagementBundle\Entity;use Doctrine\ORM\MapPing as ORM;use Symfony\Component\ValIDator\Constraints as Assert;/** * BizTV\MediaManagementBundle\Entity\Image * * @ORM\table(name="image") * @ORM\Entity * @ORM\HaslifecycleCallbacks */class Image{    /**     * @var integer $ID     *     * @ORM\Column(name="ID",type="integer")     * @ORM\ID     * @ORM\GeneratedValue(strategy="auto")     */    private $ID;    /**     * @var string $name     *     * @ORM\Column(name="name",type="string",length=255)     * @Assert\NotBlank     */    private $name;    /**     * @var integer $wIDth     *     * @ORM\Column(name="wIDth",type="integer")     */    private $wIDth;    /**     * @var integer $height     *     * @ORM\Column(name="height",type="integer")     */    private $height;    /**     * @ORM\Column(type="string",length=255,nullable=true)     */    private $path;    /**    * @var object BizTV\BackendBundle\Entity\company    *      * @ORM\ManyToOne(targetEntity="BizTV\BackendBundle\Entity\company")    * @ORM\JoinColumn(name="company",referencedColumnname="ID",nullable=false)    */    protected $company;         /**    * @var object BizTV\MediaManagementBundle\Entity\Folder    *      * @ORM\ManyToOne(targetEntity="BizTV\MediaManagementBundle\Entity\Folder")    * @ORM\JoinColumn(name="folder",nullable=true)    */    protected $folder;    /**     * @Assert\file(maxSize="6000000")     */     public $file;    /**     * @ORM\PrePersist()     * @ORM\PreUpdate()     */    public function preUpload()    {        if (null !== $this->file) {            // do whatever you want to generate a unique name            $this->path = sha1(uniqID(mt_rand(),true)).'.'.$this->file->guessExtension();        }    }    /**     * @ORM\PostPersist()     * @ORM\PostUpdate()     */    public function upload()    {        if (null === $this->file) {            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        $this->file->move($this->getUploadRootDir(),$this->path);        unset($this->file);    }    /**     * @ORM\PostRemove()     */    public function removeUpload()    {        if ($file = $this->getabsolutePath()) {            unlink($file);        }    }        public function getabsolutePath()    {        return null === $this->path ? null : $this->getUploadRootDir().'/'.$this->path;    }    public function getWebPath()    {        return null === $this->path ? null : $this->getUploadDir().'/'.$this->path;    }    protected function getUploadRootDir()    {        // the absolute directory path where uploaded documents should be saved        return __DIR__.'/../../../../web/'.$this->getUploadDir();    }    protected function getUploadDir()    {        // get rID of the __DIR__ so it doesn't screw when displaying uploaded doc/image in the vIEw.        return 'uploads/images';    }    /**     * Get ID     *     * @return integer      */    public function getID()    {        return $this->ID;    }    /**     * Set name     *     * @param string $name     */    public function setname($name)    {        $this->name = $name;    }    /**     * Get name     *     * @return string      */    public function getname()    {        return $this->name;    }    /**     * Set wIDth     *     * @param integer $wIDth     */    public function setWIDth($wIDth)    {        $this->wIDth = $wIDth;    }    /**     * Get wIDth     *     * @return integer      */    public function getWIDth()    {        return $this->wIDth;    }    /**     * Set height     *     * @param integer $height     */    public function setHeight($height)    {        $this->height = $height;    }    /**     * Get height     *     * @return integer      */    public function getHeight()    {        return $this->height;    }    /**     * Set path     *     * @param string $path     */    public function setPath($path)    {        $this->path = $path;    }    /**     * Get path     *     * @return string      */    public function getPath()    {        return $this->path;    }    /**     * Set company     *     * @param BizTV\BackendBundle\Entity\company $company     */    public function setCompany(\BizTV\BackendBundle\Entity\company $company)    {        $this->company = $company;    }    /**     * Get company     *     * @return BizTV\BackendBundle\Entity\company      */    public function getCompany()    {        return $this->company;    }    /**     * Set folder     *     * @param BizTV\MediaManagementBundle\Entity\Folder $folder     */    public function setFolder(\BizTV\MediaManagementBundle\Entity\Folder $folder = NulL)    {        $this->folder = $folder;    }    /**     * Get folder     *     * @return BizTV\MediaManagementBundle\Entity\Folder      */    public function getFolder()    {        return $this->folder;    }}

形式：

<?PHPnamespace BizTV\MediaManagementBundle\Form;use Symfony\Component\Form\AbstractType;use Symfony\Component\Form\FormBuilder;class ImageType extends AbstractType{    function __construct($createAction=0) {        $this->createAction = $createAction;        }       public function buildForm(FormBuilder $builder,array $options)    {        $createAction = $this->createAction;        if ($createAction) {                    $builder                ->add('file')            ;        }        $builder            ->add('name','text',array('label' => 'Namn'))        ;    }    public function getname()    {        return 'biztv_mediamanagementbundle_imagetype';    }}

解决方法 出于安全考虑,您不能为上载字段设置文件.有关详细信息,请参见此处 How to set the value of a HTML file field? 总结

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