Add constraints in upload image : SonataMediaBundle - symfony

Question

How can I add constraints to upload an image, for example : max size, error message, there is not thing about that in the config of sonata_media.
thank you very much.

Answer 1

First you will use the CompilerPassInterface component to override the SonataMediaBundle's MediaAdmin class as per link:
Overriding the part of bundle
supose you are in AcmeDemoBundle:
<?php
namespace Acme\DemoBundle\DependencyInjection;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
class OverrideServiceCompilerPass implements CompilerPassInterface
{
public function process(ContainerBuilder $container)
{
$definition1 = $container->getDefinition('sonata.media.admin.media');
$definition1->setClass('Acme\DemoBundle\Admin\MediaAdmin');
}
}
Second you will activate your CompilerPassInterface as per the link:
how to activate CompilerPassInterface
<?php
namespace Acme\DemoBundle;
use Symfony\Component\HttpKernel\Bundle\Bundle;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Acme\DemoBundle\DependencyInjection\OverrideServiceCompilerPass;
class AcmeDemoBundle extends Bundle
{
public function build(ContainerBuilder $container)
{
parent::build($container);
$container->addCompilerPass(new OverrideServiceCompilerPass());
}
}
and in third and final You will override MediaAdmin class of sonatamediabundle as per the link:
INLINE VALIDATION¶(19.3 USING THE ADMIN CLASS¶)
<?php
namespace Acme\DemoBundle\Admin;
use Sonata\AdminBundle\Admin\Admin;
use Sonata\AdminBundle\Form\FormMapper;
use Sonata\AdminBundle\Datagrid\DatagridMapper;
use Sonata\AdminBundle\Datagrid\ListMapper;
use Sonata\MediaBundle\Provider\Pool;
use Sonata\AdminBundle\Route\RouteCollection;
use Sonata\MediaBundle\Admin\BaseMediaAdmin as BaseAdmin;
use Sonata\MediaBundle\Form\DataTransformer\ProviderDataTransformer;
use Sonata\AdminBundle\Validator\ErrorElement;
class MediaAdmin extends BaseAdmin
{
// add this method
public function validate(ErrorElement $errorElement, $object)
{
$errorElement
->with('name')
->assertMaxLength(array('limit' => 32))
->end()
->with('description')
->assertNotNull(array())
->assertLength(array('min' => 2,
'max' => 50))
->end()
// remaining field here
;
}
}
Now you may validate remaing fields of SonataMediaBundle's Media class located in
Sonata\MediaBundle\Model\Media
That's all above the need ..

Answer 2

I got this issue in my project recently. There is my little hack(symfony 2.3):
use Symfony\Component\Validator\ExecutionContextInterface;
/**
* #ORM\Entity(repositoryClass="CMS\RequestBundle\Repository\RequestVideoRepository")
* #ORM\Table(name="request")
* #Assert\Callback(methods={"isMediaSizeValid"})
*
*/
class RequestVideo
{
property
/**
* #ORM\OneToOne(targetEntity="Application\Sonata\MediaBundle\Entity\Media",cascade={"persist"})
*/
protected $file;
Validation method
/**
* #param ExecutionContextInterface $context
*/
public function isMediaSizeValid(ExecutionContextInterface $context)
{
if($this->getFile() && $this->getFile()->getSize() > 5242880){
$context->addViolationAt('file', 'File is too big. Please upload file less than 5MB', array(), null);
}
}
Kinda dirty but I didn't find anything to sort this out. I hope someone will suggest solution better than this.