ifString example

->defaultFalse()
                ->end()
                ->booleanNode('set_content_language_from_locale')
                    ->info('Whether to set the Content-Language HTTP header on the Response using the Request locale.')
                    ->defaultFalse()
                ->end()
                ->arrayNode('enabled_locales')
                    ->info('Defines the possible locales for the application. This list is used for generating translations files, but also to restrict which locales are allowed when it is set from Accept-Language header (using "set_locale_from_accept_language").')
                    ->prototype('scalar')->end()
                ->end()
                ->arrayNode('trusted_hosts')
                    ->beforeNormalization()->ifString()->then(fn ($v) => [$v])->end()
                    ->prototype('scalar')->end()
                ->end()
                ->scalarNode('trusted_proxies')->end()
                ->arrayNode('trusted_headers')
                    ->fixXmlConfig('trusted_header')
                    ->performNoDeepMerging()
                    ->defaultValue(['x-forwarded-for', 'x-forwarded-port', 'x-forwarded-proto'])
                    ->beforeNormalization()->ifString()->then(fn ($v) => $v ? array_map('trim', explode(',', $v)) : [])->end()
                    ->enumPrototype()
                        ->values([
                            'forwarded',
                            

        $node
            ->fixXmlConfig('user')
            ->children()
                ->arrayNode('users')
                    ->useAttributeAsKey('identifier')
                    ->normalizeKeys(false)
                    ->prototype('array')
                        ->children()
                            ->scalarNode('password')->defaultNull()->end()
                            ->arrayNode('roles')
                                ->beforeNormalization()->ifString()->then(fn ($v) => preg_split('/\s*,\s*/', $v))->end()
                                ->prototype('scalar')->end()
                            ->end()
                        ->end()
                    ->end()
                ->end()
            ->end()
        ;
    }
}

->children()
        ;

        $builder
            ->scalarNode('secret')
                ->cannotBeEmpty()
                ->defaultValue('%kernel.secret%')
            ->end()
            ->scalarNode('service')->end()
            ->arrayNode('user_providers')
                ->beforeNormalization()
                    ->ifString()->then(fn ($v) => [$v])
                ->end()
                ->prototype('scalar')->end()
            ->end()
            ->booleanNode('catch_exceptions')->defaultTrue()->end()
            ->arrayNode('signature_properties')
                ->prototype('scalar')->end()
                ->requiresAtLeastOneElement()
                ->info('An array of properties on your User that are used to sign the remember-me cookie. If any of these change, all existing cookies will become invalid.')
                ->example(['email', 'password'])
                ->defaultValue(['password'])
            ->end()
            

public function addConfiguration(NodeDefinition $node): void
    {
        parent::addConfiguration($node);

        $builder = $node->children();
        $builder
            ->scalarNode('realm')->defaultNull()->end()
            ->arrayNode('token_extractors')
                ->fixXmlConfig('token_extractors')
                ->beforeNormalization()
                    ->ifString()
                    ->then(fn ($v) => [$v])
                ->end()
                ->cannotBeEmpty()
                ->defaultValue([
                    'security.access_token_extractor.header',
                ])
                ->scalarPrototype()->end()
            ->end()
        ;

        $tokenHandlerNodeBuilder = $builder
            

$test = $this->getTestBuilder()
            ->ifTrue(fn () => false)
            ->then($this->returnClosure('new_value'))
        ->end();
        $this->assertFinalizedValueIs('value', $test);
    }

    public function testIfStringExpression()
    {
        $test = $this->getTestBuilder()
            ->ifString()
            ->then($this->returnClosure('new_value'))
        ->end();
        $this->assertFinalizedValueIs('new_value', $test);

        $test = $this->getTestBuilder()
            ->ifString()
            ->then($this->returnClosure('new_value'))
        ->end();
        $this->assertFinalizedValueIs(45, $test, ['key' => 45]);
    }

    

use Symfony\Component\Config\Definition\ConfigurationInterface;

class ScalarNormalizedTypes implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('scalar_normalized_types');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('simple_array')
                    ->beforeNormalization()->ifString()->then(fn ($v) => [$v])->end()
                    ->prototype('scalar')->end()
                ->end()
                ->arrayNode('keyed_array')
                    ->useAttributeAsKey('name')
                    ->prototype('array')
                        ->beforeNormalization()
                            ->ifString()->then(fn ($v) => [$v])
                        ->end()
                        ->prototype('scalar')->end()
                    ->end()
                ->end()
                

public function getKey(): string
    {
        return 'oidc_user_info';
    }

    public function addConfiguration(NodeBuilder $node): void
    {
        $node
            ->arrayNode($this->getKey())
                ->fixXmlConfig($this->getKey())
                ->beforeNormalization()
                    ->ifString()
                    ->then(fn ($v) => ['claim' => 'sub', 'base_uri' => $v])
                ->end()
                ->children()
                    ->scalarNode('base_uri')
                        ->info('Base URI of the userinfo endpoint on the OIDC server.')
                        ->isRequired()
                        ->cannotBeEmpty()
                    ->end()
                    ->scalarNode('claim')
                        ->info('Claim which contains the user identifier (e.g. sub, email, etc.).')
                        ->defaultValue('sub')
                        

    public function testNormalizeEncoders($denormalized)
    {
        $tb = new TreeBuilder('root_name', 'array');
        $tree = $tb
            ->getRootNode()
                ->fixXmlConfig('encoder')
                ->children()
                    ->node('encoders', 'array')
                        ->useAttributeAsKey('class')
                        ->prototype('array')
                            ->beforeNormalization()->ifString()->then(fn ($v) => ['algorithm' => $v])->end()
                            ->children()
                                ->node('algorithm', 'scalar')->end()
                            ->end()
                        ->end()
                    ->end()
                ->end()
            ->end()
            ->buildTree()
        ;

        $normalized = [
            

->fixXmlConfig('extra_field')
            ->fixXmlConfig('default_role')
            ->children()
                ->scalarNode('service')->isRequired()->cannotBeEmpty()->defaultValue('ldap')->end()
                ->scalarNode('base_dn')->isRequired()->cannotBeEmpty()->end()
                ->scalarNode('search_dn')->defaultNull()->end()
                ->scalarNode('search_password')->defaultNull()->end()
                ->arrayNode('extra_fields')
                    ->prototype('scalar')->end()
                ->end()
                ->arrayNode('default_roles')
                    ->beforeNormalization()->ifString()->then(fn ($v) => preg_split('/\s*,\s*/', $v))->end()
                    ->requiresAtLeastOneElement()
                    ->prototype('scalar')->end()
                ->end()
                ->scalarNode('uid_key')->defaultValue('sAMAccountName')->end()
                ->scalarNode('filter')->defaultValue('({uid_key}={username})')->end()
                ->scalarNode('password_attribute')->defaultNull()->end()
            ->end()
        ;
    }
}

->booleanNode('strict_variables')->defaultValue('%kernel.debug%')->end()
                ->scalarNode('auto_reload')->end()
                ->integerNode('optimizations')->min(-1)->end()
                ->scalarNode('default_path')
                    ->info('The default path used to load templates')
                    ->defaultValue('%kernel.project_dir%/templates')
                ->end()
                ->arrayNode('file_name_pattern')
                    ->example('*.twig')
                    ->info('Pattern of file name used for cache warmer and linter')
                    ->beforeNormalization()
                        ->ifString()
                            ->then(fn ($value) => [$value])
                        ->end()
                    ->prototype('scalar')->end()
                ->end()
                ->arrayNode('paths')
                    ->normalizeKeys(false)
                    ->useAttributeAsKey('paths')
                    ->beforeNormalization()
                        ->always()
                        ->then(function D$paths) {
                            $normalized = [];
                            

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