Synfony 2 File Uploader with Doctrine 2 - file-upload

Question

I want to make a simple file uploader with Symfony 2 and Doctrine 2.
I've follow this tutorial :
http://symfony.com/doc/current/cookbook/doctrine/file_uploads.html
and this one :
http://leny-bernard.com/fr/afficher/article/creer-un-site-facilement-en-symfony2-partie-4
Here is my Entity class :
namespace Luna\KBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\HttpFoundation\File\File;
/**
* Luna\KBundle\Entity\Media
*
* #ORM\Entity
*/
class Media
{
/**
* #var integer $id
*/
private $id;
/**
* #var string $title
*/
private $title;
/**
* #var text $description
*/
private $description;
/**
* #var string $author
*/
private $author;
/**
* #var string $source
*/
private $source;
/**
* #Assert\File(maxSize="6000000")
*/
private $paths;
/**
* #var string $type
*/
private $type;
/**
* #var Luna\KBundle\Entity\object
*/
private $idobject;
/***********************************METHODS***********************************/
/**
* Set idobject
*
* #param Luna\KBundle\Entity\Object $idobject
*/
public function setIdobject(\Luna\KBundle\Entity\object $idobject)
{
$this->idObject = $idObject;
}
/**
* Get idObject
*
* #return Luna\KBundle\Entity\Object
*/
public function getIdObject()
{
return $this->idObject;
}
/**
* Get id
*
* #return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* #param string $title
*/
public function setTitle($title)
{
$this->title = $title;
}
/**
* Get title
*
* #return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Set description
*
* #param text $description
*/
public function setDescription($description)
{
$this->description = $description;
}
/**
* Get description
*
* #return text
*/
public function getDescription()
{
return $this->description;
}
/**
* Set author
*
* #param string $author
*/
public function setAuthor($author)
{
$this->author = $author;
}
/**
* Get author
*
* #return string
*/
public function getAuthor()
{
return $this->author;
}
/**
* Set source
*
* #param string $source
*/
public function setSource($source)
{
$this->source = $source;
}
/**
* Get source
*
* #return string
*/
public function getSource()
{
return $this->source;
}
/**
* Set paths
*
* #param string $paths
*/
public function setPaths($paths)
{
$this->paths = $paths;
}
/**
* Get paths
*
* #return string
*/
public function getPaths()
{
return $this->paths;
}
/**
* Set type
*
* #param string $type
*/
public function setType($type)
{
$this->type = $type;
}
/**
* Get type
*
* #return string
*/
public function getType()
{
return $this->type;
}
public function getAbsolutePath()
{
return null === $this->paths ? null : $this->getUploadRootDir().'/'.$this->paths;
}
public function getWebPath()
{
return null === $this->paths ? null : $this->getUploadDir().'/'.$this->paths;
}
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/mediaobject';
}
}
The fact is that #Assert\File(maxSize="6000000") is not working : I don't have a file uploader but just a simple texte field ?!
How can I make this works correctly ?
Regards Guys :)
EDIT : Here my Form builder
namespace Luna\KBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilder;
class MediaInit extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder
->add('title')
->add('description')
->add('author')
->add('source')
->add('paths')
->add('type')
->add('idObject')
;
}
}
And Here my twig template :
{% extends '::layout.html.twig' %}
{####################################### MEDIA INIT###########################}
{% block content %}
<h1>Creer un Media</h1>
Entrez les informations de votre media ici
<form action="{{ path('media_init') }}" method="post" {{ form_enctype(form) }}>
{{ form_widget(form) }}
<p>
<button type="submit">Creer</button>
</p>
</form>
{% endblock %}

Answer 1

When you want to upload a file you need to declare a path field & a virtual file field. So, your class needs to look like :
class Media
{
private $path;
/**
* #Assert\File(maxSize="6000000")
*/
private $file;
}
And your form:
class MediaInit extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder
->add('file');
}
}

Answer 2

It seems that $builder variable in MediaInit class is not initialized properly (with "Media" type).