我正在使用 Bundle VichUploader 上传图片。图片很好地保存在 web 目录中，但是当我尝试渲染它时，出现以下错误：
渲染模板期间抛出异常（“注意：未定义索引：实体”）
配置.yml
vich_uploader:
db_driver: orm
mappings:
product_image:
uri_prefix: /userprofile/pictures
upload_destination: %kernel.root_dir%/../web/bundles/flyplatform/userprofile/pictures
namer: vich_uploader.namer_uniqid
inject_on_load: false
delete_on_update: true
delete_on_remove: true
Post.php
<?php
namespace FLY\BookingsBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Application\Sonata\UserBundle\Entity\User;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Security;
use JMS\SecurityExtraBundle\Annotation\Secure;
use Symfony\Component\Validator\Constraints as Assert;
use Vich\UploaderBundle\Form\Type\VichImageType;
use Symfony\Component\HttpFoundation\File\File;
use Vich\UploaderBundle\Mapping\Annotation as Vich;
use Symfony\Component\Form\Extension\Core\Type\FileType;
/**
* Post
*
* @ORM\Table(name="post")
* @ORM\Entity(repositoryClass="FLY\BookingsBundle\Entity\PostRepository")
* @Vich\Uploadable
*/
class Post
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
*
*
* @Vich\UploadableField(mapping="product_image", fileNameProperty="imageName")
*
* @var File
*/
private $imageFile;
/**
* If manually uploading a file (i.e. not using Symfony Form) ensure an instance
* of 'UploadedFile' is injected into this setter to trigger the update. If this
* bundle's configuration parameter 'inject_on_load' is set to 'true' this setter
* must be able to accept an instance of 'File' as the bundle will inject one here
* during Doctrine hydration.
*
* @param File|\Symfony\Component\HttpFoundation\File\UploadedFile $image
*
* @return User
*/
public function setImageFile(File $image = null)
{
$this->imageFile = $image;
if ($image) {
// It is required that at least one field changes if you are using doctrine
// otherwise the event listeners won't be called and the file is lost
$this->updatedAt = new \DateTime('now');
}
return $this;
}
/**
* @return File
*/
public function getImageFile()
{
return $this->imageFile;
}
/**
* @param string $imageName
*
* @return User
*/
public function setImageName($imageName)
{
$this->imageName = $imageName;
return $this;
}
/**
* @return string
*/
public function getImageName()
{
return $this->imageName;
}
/**
* @ORM\Column(type="string", length=255)
*
* @var string
*/
private $imageName;
/**
* @ORM\Column(type="datetime")
*
* @var \DateTime
*/
protected $updatedAt;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
}
PostType.php
$builder
->add('imageFile', 'vich_image', array(
))
新的.html.twig
{% for entity in entity %}
<img src="{{ vich_uploader_asset(entity, 'imageFile') }}" alt="{{ product.name }}" />
{% endfor %}
添加：
PostController.php
/**
* Creates a new Post entity.
*
* @Route("/", name="post_create")
* @Method("POST")
* @Secure(roles="ROLE_USER")
* @Template("FLYBookingsBundle:Post:new.html.twig")
*/
public function createAction(Request $request)
{
$user = $user = $this->getUser();
$entity = new Post();
$entity->setEmail($user);
$form = $this->createForm(PostType::class,$entity);
$form->handleRequest($request);
if ($form->isValid()) {
$userManager = $this->container->get('fos_user.user_manager');
$usr = $userManager->findUserByUsername($this->container->get('security.context')
->getToken()
->getUser());
$entity->setUsername($usr);
$user = $this->getUser();
$entity->setUser($user);
$em = $this->getDoctrine()->getManager();
$em->persist($entity);
$em->flush();
return $this->redirect($this->generateUrl('post_show', array('id' => $entity->getId())));
}
return array(
'entity' => $entity,
'form' => $form->createView(),
);
}
/**
* Displays a form to create a new Post entity.
*
* @Route("/new", name="post_new")
* @Method("GET")
* @Template()
*/
public function newAction()
{
$entity = new Post();
$form = $this->createCreateForm($entity);
return array( 'entity' => $entity,'form' => $form->createView());
}