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Config ServiceProvider for Silex

A configuration ServiceProvider for Silex based on Symfony Config component with support for YAML, TOML (0.2.0) and JSON.

Installation

Use Composer to install Yosyfmony ConfigServiceProvider package:

Add the following to your composer.json and run composer update.

"require": {
    "yosymfony/config-serviceprovider": "1.2-dev"
}

More informations about the package on Packagist.

Usage

Register the ServiceProvider:

$app->register(new ConfigServiceProvider());

You can set a collection of locations where it should look for files and reference it only with the file's name

$app->register(new ConfigServiceProvider(array(
    __dir__.'/config',
    '/var/www/general-config'
)));

Load a configuration file:

$repository = $app['configuration']->load('user.yml');

// or load with absolute path:
$repository = $app['configuration']->load('/var/config/user1.yml');

.dist files

This library have support to .dist files. The location of a file follow the next hierachy:

• filename.ext
• filename.ext.dist (if filename.ext not exists)

Load inline configuration:

use Yosymfony\Silex\ConfigServiceProvider\Config;

$repository = $app['configuration']->load('server: "mail.yourname.com"', Config::TYPE_YAML);
// or
$repository = $app['configuration']->load('server = "mail.yourname.com"', Config::TYPE_TOML);

Repository

The configuration file is loaded to a repository. A repository is a wrapper with array access interface that supply methods for validating configurations values and merge with other repositories.

$repository->get('name', 'noname'); // If 'name' not exists return 'noname'
$repository['name']; // Get the element in 'name' key

Validating configurations

The values and the structure can be validated using a definition class from Symfony Config component. For example, for this configuratión file:

# Yaml file
port: 25
server: "mail.yourname.com"

you can create the below definition:

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

class MyConfigDefinitions implements ConfigurationInterface
{
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();
        $rootNode = $treeBuilder->root(0);

        $rootNode->children()
            ->integerNode('port')
                ->end()
            ->scalarNode('server')
                ->end()
        ->end();

        return $treeBuilder;
    }
}

and check your repository: $repository->validateWith(new MyConfigDefinitions()); An exception will be thrown if any definition constraints are violated.

Operations

The operation mergeWith was deprecated since version 1.2.0 and replaced by union method.

Unions

You can get the union of repository A with other B with C as result: $resultC = $repositoryA->union($repositoryB);. The values of $repositoryB have less priority than $repositoryA.

Intersections

You can get the intersection of repository A with other B with C as result: $resultC = $repositoryA->intersection($repositoryB);. The values of $repositoryB have less priority than $repositoryA.

Create a blank repository

Create a blank repository is too easy. You only need create a instance of ConfigRepository and use the array interface or set method to insert new values:

use Yosymfony\Silex\ConfigServiceProvider\ConfigRepository;

//...

$repository = new ConfigRepository();
$repository->set('key1', 'value1');
// or
$repository['key1'] = 'value1';

and the next, you merge with others or validate it.

Unit tests

You can run the unit tests with the following command:

$ cd your-path/vendor/yosymfony/config-serviceprovider
$ composer.phar install --dev
$ phpunit