Configuration.php

<?php

/*
 * This file is part of the Sonata project.
 *
 * (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Sonata\AdminBundle\DependencyInjection;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
use Symfony\Component\Config\Definition\ConfigurationInterface;


/**
 * This class contains the configuration information for the bundle
 *
 * This information is solely responsible for how the different configuration
 * sections are normalized, and merged.
 *
 * @author Michael Williams <mtotheikle@gmail.com>
 */
class Configuration
{
    /**
     * Generates the configuration tree.
     *
     * @return \Symfony\Component\Config\Definition\NodeInterface
     */
    public function getConfigTree($kernelDebug)
    {
        $treeBuilder = new TreeBuilder();
        $rootNode = $treeBuilder->root('sonata_admin', 'array');

        $this->addTemplateSection($rootNode);
        $this->addAccessControlSection($rootNode);
        $this->addRoleHierarchySection($rootNode);

        return $treeBuilder->buildTree();
    }

    private function addTemplateSection(ArrayNodeDefinition $rootNode)
    {
        $rootNode
            ->children()
                ->arrayNode('templates')
                    ->children()
                        ->scalarNode('layout')->cannotBeEmpty()->end()
                        ->scalarNode('ajax')->cannotBeEmpty()->end()
                    ->end()
                ->end()
            ->end()
        ->end();
    }

    private function addAccessControlSection(ArrayNodeDefinition $rootNode)
    {
        $rootNode
            ->fixXmlConfig('rule', 'access_control')
            ->children()
                ->arrayNode('access_control')
                    ->cannotBeOverwritten()
                    ->prototype('array')
                        ->children()
                            ->scalarNode('requires_channel')->defaultNull()->end()
                            ->scalarNode('path')->defaultNull()->end()
                            ->scalarNode('host')->defaultNull()->end()
                            ->scalarNode('ip')->defaultNull()->end()
                            ->arrayNode('methods')
                                ->beforeNormalization()->ifString()->then(function($v) { return preg_split('/\s*,\s*/', $v); })->end()
                                ->prototype('scalar')->end()
                            ->end()
                        ->end()
                        ->fixXmlConfig('role')
                        ->children()
                            ->arrayNode('roles')
                                ->beforeNormalization()->ifString()->then(function($v) { return preg_split('/\s*,\s*/', $v); })->end()
                                ->prototype('scalar')->end()
                            ->end()
                        ->end()
                    ->end()
                ->end()
            ->end()
        ;
    }

    private function addRoleHierarchySection(ArrayNodeDefinition $rootNode)
    {
        $rootNode
            ->fixXmlConfig('role', 'role_hierarchy')
            ->children()
                ->arrayNode('role_hierarchy')
                    ->useAttributeAsKey('id')
                    ->prototype('array')
                        ->performNoDeepMerging()
                        ->beforeNormalization()->ifString()->then(function($v) { return array('value' => $v); })->end()
                        ->beforeNormalization()
                            ->ifTrue(function($v) { return is_array($v) && isset($v['value']); })
                            ->then(function($v) { return preg_split('/\s*,\s*/', $v['value']); })
                        ->end()
                        ->prototype('scalar')->end()
                    ->end()
                ->end()
            ->end()
        ;
    }
}