symfony2 and run service automatically

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()