symfony2 and run service automatically - php

Question

i decided to create a service in symfony2.4 that can access me to the container in all of scopes in my project.
so i created a model:
namespace Nevec\RaxcidoBundle\Model;
class Base {
public static $container;
public function __construct() {
self::$container = $container;
}
}
and set this model as a service in resources/config/services.yml
parameters:
nevec_raxcido.core: Nevec\RaxcidoBundle\Model\Base
services:
nevec_raxcido.example:
class: %nevec_raxcido.core%
arguments: [#service_container]
now, as you know i should call this service in controllers like this:
$this->get("nevec_raxcido.example");
but i want to auto load this service, without call above command in controllers
the question is how can i automatically load a service after kernel boot in symfony2?

Answer 1

i found the solution, it seems that we should use listeners into services.yml like:
parameters:
nevec_raxcido.core: Nevec\RaxcidoBundle\Model\Base
services:
nevec_raxcido.example:
class: %nevec_raxcido.core%
arguments: [#service_container]
tags:
- {name: kernel.event_listener, event: kernel.request, method: onKernelRequest}
and this model:
<?php
namespace Nevec\RaxcidoBundle\Model;
class Base{
public static $container;
public function __construct($container) {
self::$container = $container;
}
public function onKernelRequest($event){
return;
}
}
so you can access to the container in all scopes of your application with this:
$container = Model\Base::$container;

Answer 2

Please don't use the service container. Use dependency injection.
class Service {
private $service;
public function __construct(SomeServiceInterface $someService){
$this -> service = $service;
}
}
and the yml:
services:
service1:
class: SOMENAMESPACE\Service
arguments: [#service2]
service2:
class: SOMENAMESPACE\SomeService
Now you can access SOMENAMESPACE\SomeService in SOMENAMESPACE\Service. And you can get the service in a controller via:
$this -> get('service1');
Let's say doctrine is your concrete service you want to inject.
Do this:
class Service {
private $em;
protected function getEm(ObjectManager $em){
$this -> em = $em;
}
}
services:
service1:
class: SOMENAMESPACE\Service
arguments: [#doctrine.orm.entity_manager]
Second part of the question: How to autoload? Pretty easy. Build a "BaseController" and extend it.
class BaseAppController extends Controller{
private $service;
protected function getService(){
if (!($this -> service instanceof SomeServiceInterface)) $this -> service = $this -> get('service');
return $this -> service;
}
}
access via $this -> getService()