Write automatically in services.yml file

Question

I want to create a php class that writes automatically a service in the services.yml file based on my entities ( on server run or with a command ) .Is it possible to do so or should I just use the filesystem to do it ?

Answer 1

You can but the newly created service will be unavailable until the next request.

To retrieve the services.yml of a bundle :

// src/AcmeBundle/Controller/DefaultController.php

$kernel = $this->get('kernel');
$servicesPath = $kernel->locateResource('@AcmeBundle/Resources/config/services.yml');`

Or the global services.yml of your application :

$servicesPath = $kernel->getRootDir().'/config/services.yml';``

Write your new service into :

$parser = new \Symfony\Component\Yaml\Parser();
$dumper = nrw \Symfony\Component\Yaml\Dumper();

// Get the services already configured, use the path of 'services.yml' retrieved from bundle/application
$oldServices = $parser->parse($servicesPath); 
$newService = array('your_service_name' => array( 
   // Here your arguments, tags, ...
);

$mergedServices = array_merge($oldServices, $newService);
$yamlServices = $dumper->dump($mergedServices);

// Write all in the configuration file
file_put_contents($servicesPath, $yamlServices); // $services is the 'services.yml' path