Symfony 2 problems with validating form - php

Question

I want to validate my form. I created validation.yml file in the config folder, my bundle is registered and the file is loaded in DependencyInjection. I get the following error:
There is no extension able to load the configuration for "Developer\Forum\ForumBundle\Entity\Registration" (in /var/www/html/forum/src/Developer/Forum/ForumBundle/DependencyInjection/../Resources/config/validation.yml). Looked for namespace "Developer\Forum\ForumBundle\Entity\Registration", found none
My validation.yml:
Developer\Forum\ForumBundle\Entity\Registration:
properties:
name:
- NotBlank: ~
surname:
- NotBlank: ~
DependencyInjection:
namespace Developer\Forum\ForumBundle\DependencyInjection;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\Config\FileLocator;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;
use Symfony\Component\DependencyInjection\Loader;
use Developer\Forum\ForumBundle\Entity\Registration;
/**
* This is the class that loads and manages your bundle configuration
*
* To learn more see {#link http://symfony.com/doc/current/cookbook/bundles/extension.html}
*/
class DeveloperForumForumExtension extends Extension
{
/**
* {#inheritdoc}
*/
public function load(array $configs, ContainerBuilder $container)
{
$configuration = new Configuration();
$config = $this->processConfiguration($configuration, $configs);
$loader = new Loader\YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
$loader->load('services.yml');
$loader->load('validation.yml');
}
}
The form itself is working fine, data is saved into the database, but I need some validation. What is missing?

Answer 1

/app/Resources/config/validation.yml is loaded automatically. Don't load it for your configuration, this is wrong.
Add this to your configuration instead, to enable validation and don't let PHP parse annotations.
framework:
validation:
enabled: true
enable_annotations: false
If you want to add userdefined ymls for validation, you can append it to the parameter validator.mapping.loader.yaml_files_loader.mapping_files, (Symfony2 how to load validation.yml)