我正在尝试上传带有文件字段的表单。表单加载正常，但请求的 Symfony\Component\HttpFoundation\Request 对象仅将文件表示为字符串而不是 UploadedFile 对象。
use Symfony\Component\HttpFoundation\Request;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use some\Bundle\Entity\Images;
use some\Bundle\Form\ImagesType;
/**
* Images controller.
*
*/
class ImagesController extends Controller {
public function createAction(Request $request) {
$entity = new Images();
$form = $this->createForm(new ImagesType(), $entity);
$form->bind($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($entity);
$em->flush();
return $this->redirect($this->generateUrl('images_show', array('id' => $entity->getId())));
}
return $this->render('sephaBundle:admin/Images:new.html.twig', array(
'entity' => $entity,
'form' => $form->createView(),
));
}
}
实体类
<?php
namespace some\Bundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use some\Bundle\Entity\Images;
/**
* some\Bundle\Entity\Images
*/
class Images {
/**
* @var integer $id
*/
private $id;
/**
* @var string $link
*/
private $link;
/**
* @var string $name
*/
private $name;
/**
* @var file $file
*/
public $file;
public function getFile() {
return $this->file;
}
public function setFile($file) {
$this->file = $file;
return $this;
}
/**
* Get id
*
* @return integer
*/
public function getId() {
return $this->id;
}
/**
* Set link
*
* @param string $link
* @return Images
*/
public function setLink($link) {
$this->link = $link;
return $this;
}
/**
* Get link
*
* @return string
*/
public function getLink() {
return $this->link;
}
/**
* Get $Name
*
* @return string
*/
public function getName() {
return $this->name;
}
/**
* Set Name
*
* @param string $name
* @return Images
*/
public function setName($name) {
$this->name = $name;
return $this;
}
///////////////////////////////////////////////////////////////
// <editor-fold defaultstate="collapsed" desc="process file storage location">
public function getAbsoluteLink() {
return null === $this->link ? null : $this->getUploadRootDir() . '/' . $this->link;
}
public function getWebLink() {
return null === $this->link ? null : $this->getUploadDir() . '/' . $this->link;
}
protected function getUploadRootDir() {
// the absolute directory link where uploaded
// documents should be saved
return __DIR__ . '/../../../../web/' . $this->getUploadDir();
}
protected function getUploadDir() {
// get rid of the __DIR__ so it doesn't screw up
// when displaying uploaded doc/image in the view.
return 'uploads/documents';
}
// </editor-fold>
///////////////////////////////////////////////////////////////
public function preUpload() {
if (null !== $this->file) {
// do whatever you want to generate a unique name
$filename = sha1(uniqid(mt_rand(), true));
$this->link = $filename . '.' . $this->file->guessExtension();****//error here $this->file is a string instead of UploadedFile object****
}
}
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(), $this->link);
unset($this->file);
}
/**
* //@ ORM\PostRemove()
*/
public function removeUpload() {
if ($file === $this->getAbsoluteLink()) {
unlink($file);
}
}
}?>
表单生成类
namespace some\Bundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\HttpFoundation\File\UploadedFile;
class ImagesType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('Name')
->add('file','file',array(
'label'=>'Image',
'data_class' => 'Symfony\Component\HttpFoundation\File\UploadedFile'
));
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'sepha\Bundle\Entity\Images'
));
}
public function getName()
{
return 'sepha_bundle_imagestype';
}
}
yaml 中的 ORM MAP
some\Bundle\Entity\Images:
type: entity
table: images
fields:
id:
id: true
type: integer
unsigned: false
nullable: false
generator:
strategy: IDENTITY
name:
type: string
length: 20
fixed: false
nullable: false
link:
type: string
length: 60
fixed: false
nullable: false
properties:
file:
- Image:
maxSize: 1024k
mimeTypes: [image/jpeg, image/png, image/gif ]
mimeTypesMessage: Please upload a valid image of type jpeg,png or gif
lifecycleCallbacks:
prePersist: [preUpload]
preUpdate: [preUpload]
postPersist: [upload]
postUpdate: [upload]
postRemove: [removeUpload]
我应该怎么做才能使请求对象将文件请求表示为 UploadedFile 对象而不是字符串