symfony3 Configuration Use fully qualified class name (FQCN) as service id
Example
In many examples, you will find a service id like 'acme.demo.service.id' (a string with dots). You services.yml will look like this:
services:
acme.demo.service.id:
class: Acme\DemoBundle\Services\DemoService
arguments: ["@doctrine.orm.default_entity_manager", "@cache"]
In your controller, you can use this service:
$service = $this->get('acme.demo.service.id');
While there is no issue with this, you can use a Fully Qualified Class Name (FQCN) as service id:
services:
Acme\DemoBundle\Services\DemoService:
class: Acme\DemoBundle\Services\DemoService
arguments: ["@doctrine.orm.default_entity_manager", "@cache"]
In your controller you can use it like this:
use Acme\DemoBundle\Services\DemoService;
// ..
$this->get(DemoService::class);
This makes your code better to understand. In many cases it makes no sense to have a service id that isn't just the class name.
As of Symfony 3.3, you can even remove the class attribute if you service id is a FQCN.
