Sonata media bundle how to enable pixlr editing? - symfony

Question

I have enabled pixlr as described here but is not enabled have tried many times.
There is no edit with pixlr button visible in media form.
Am I missing anything, Struggling from long time. Please help,
Is there any additional config apart from this?
Here is my config
sonata_media:
pixlr:
enabled: true
secret: theSecretHash
referrer: Demo
# if you don't use default namespace configuration
class:
media: App\Application\Sonata\MediaBundle\Entity\Media
gallery: App\Application\Sonata\MediaBundle\Entity\Gallery
gallery_has_media: App\Application\Sonata\MediaBundle\Entity\GalleryHasMedia
category: App\Application\Sonata\ClassificationBundle\Entity\Category
db_driver: doctrine_orm # or doctrine_mongodb, doctrine_phpcr it is mandatory to choose one here
default_context: default # you need to set a context
contexts:
default: # the default context is mandatory
providers:
- sonata.media.provider.dailymotion
- sonata.media.provider.youtube
- sonata.media.provider.image
- sonata.media.provider.file
- sonata.media.provider.vimeo
formats:
small: { width: 100 , quality: 70 }
big: { width: 500 , quality: 70 }
gallery:
providers:
- sonata.media.provider.dailymotion
- sonata.media.provider.youtube
- sonata.media.provider.image
- sonata.media.provider.file
- sonata.media.provider.vimeo
formats:
original: { width: 500, quality: 100 }
thumbnail: { width: 200, height: 200, quality: 100 }
cdn:
server:
path: http://127.0.0.1:8000/uploads/media # http://media.sonata-project.org/
filesystem:
local:
directory: "%kernel.root_dir%/../public/uploads/media" #flex
#directory: "%kernel.root_dir%/../web/uploads/media" #non-flex
create: false

Answer 1

After digging into the code I found the problem is with Symfony 4 making services private by default.
And this is how sonata media bundle enables pixlr
First it checks if sonata.media.extra.pixlr service is available in the container.
If not then it doesn't enable the pixlr. Since the service is private container is not able to access the service.
// Sonata\MediaBundle\Twig\GlobalVariable
/**
* #return Pixlr|bool
*/
public function getPixlr()
{
return $this->container->has('sonata.media.extra.pixlr') ? $this->container->get('sonata.media.extra.pixlr') : false;
}
Workaround for this is to override service definition and make it public :)
sonata.media.extra.pixlr:
public: true
class: Sonata\MediaBundle\Extra\Pixlr
arguments: [~,~,"#sonata.media.pool", "#sonata.media.manager.media", "#router", "#sonata.templating", "#service_container"]
Now you can see pixlr edit button enabled in media form