get image asset from postLoad doctrine event - doctrine-orm

Question

I created an Entity Listener to upload pictures.
Entity Listener
<?php
namespace AppBundle\Listener;
use ...
class PictureListener
{
private $manager;
public function __construct(PictureManager $manager)
{
$this->manager = $manager;
}
public function prePersist(PictureInterface $entity, LifecycleEventArgs $event)
{
$this->uploadFile($entity);
}
public function preUpdate(PictureInterface $entity, LifecycleEventArgs $event)
{
$this->uploadFile($entity);
}
public function postLoad(PictureInterface $entity, LifecycleEventArgs $event)
{
$fileName = $entity->getPicture();
if($fileName == NULL) {
return;
}
$file = new File($this->manager->getUploadDir().'/'.$fileName);
$entity->setPicture($file);
}
private function uploadFile($entity)
{
$file = $entity->getPicture();
if (!$file instanceof UploadedFile) {
return;
}
$fileName = $this->manager->upload($file);
$entity->setPicture($fileName);
}
}
Picture Manager
<?php
namespace AppBundle\Utils;
use Symfony\Component\HttpFoundation\File\UploadedFile;
class PictureManager
{
private $uploadDir;
public function __construct($uploadDir)
{
$this->uploadDir = $uploadDir;
}
public function upload(UploadedFile $file)
{
$fileName = md5(uniqid()).'.'.$file->guessExtension();
$file->move($this->uploadDir, $fileName);
return $fileName;
}
public function getUploadDir()
{
return $this->uploadDir;
}
}
I use the postLoad to get the absolute path of my pic and just call:
<img class="img-thumbnail" src="{{ category.picture }}" alt="{{ category.name }}">
to display it.
The generating src is
/Users/*******/Projects/*******/app/../web/uploads/pictures/8fcdaf996f1a30c5b64423ebc1284391.jpeg
and Symfony seems to not like absolute path because it does not work. 404 error. The upload file is in the right place.

Answer 1

Please try asset() in twig. It will target web folder of your application.
Syntax:
{{ asset('<File Name>') }}
Replace:
<img class="img-thumbnail" src="{{ category.picture }}" alt="{{ category.name }}">
With
<img class="img-thumbnail" src="{{ asset('uploads/pictures/'~category.picture) }}" alt="{{ category.name }}">
I have used it in symfony 2.3. Hope it will solve your issue