symfony5 service - how to inject session and user without the ContainerInterface-CodePudding

I have this deprecation message:

Since symfony/dependency-injection 5.1: The "Symfony\Component\DependencyInjection\ContainerInterface" autowiring alias is deprecated. Define it explicitly in your app if you want to keep using it.

From threads such as this Symfony: Explicit define Container in Service I understand that the long-term solution is to stop using the ContainerInterface all together in my services.

My services.yaml looks like this:

parameters:
    #locale: en
    basepath: '%env(basepath)%'

services:
    # default configuration for services in *this* file
    _defaults:
        autowire: true      # Automatically injects dependencies in your services.
        autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.

    # makes classes in src/ available to be used as services
    # this creates a service per class whose id is the fully-qualified class name
    App\:
        resource: '../src/'
        exclude:
            - '../src/DependencyInjection/'
            - '../src/Entity/'
            - '../src/Kernel.php'

    # controllers are imported separately to make sure services can be injected
    # as action arguments even if you don't extend any base controller class
    App\Controller\:
        resource: '../src/Controller/'
        tags: ['controller.service_arguments']


    # add more service definitions when explicit configuration is needed
    # please note that last definitions always *replace* previous ones
    globalHelper:
        class: App\Service\globalHelper
        public: false

The service in question (globalHelper) looks like this:

<?php
namespace App\Service;

use Symfony\Component\DependencyInjection\ContainerInterface as Container;
use Doctrine\ORM\EntityManagerInterface as EntityManager;

class globalHelper {

    private $container;
    private $em;

    public function __construct(Container $container, EntityManager $em) {
        $this->container = $container;
        $this->em = $em;
    }

I only user the container to fetch session variables like this

$this->container->get('session')->getFlashBag()->add($type, $message);

And to get the current user (security context) like this

$this->container->get('security.context')->getToken()->getUser();

Can I get these sub-components of the container separately instead? What component then would I inject to access these two parts (session and user) respectively?

--------------- Addition --------------

According to Alexis' suggestion below I modified the head of the file with

<?php
namespace App\Service;

//use Symfony\Component\DependencyInjection\ContainerInterface as Container;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\Security\Core\Security;
use Doctrine\ORM\EntityManagerInterface as EntityManager;

class globalHelper {

    //private $container;
    private $requestStack;
    private $security;
    private $em;

    //public function __construct(Container $container, RequestStack $requestStack, Security $security, EntityManager $em) {
    public function __construct(RequestStack $requestStack, Security $security, EntityManager $em) {
        //$this->container = $container;
        $this->requestStack = $requestStack;
        $this->security = $security;
        $this->em = $em;
    }

then replaced

$this->container->get('session')->getFlashBag()->add($type, $message);

with

$this->requestStack->getSession()->getFlashBag()->add($type, $message);

and get this error:

Attempted to call an undefined method named "getSession" of class "Symfony\Component\HttpFoundation\RequestStack".

if I instead to this:

$this->requestStack->get('session')->getFlashBag()->add($type, $message);

Attempted to call an undefined method named "get" of class "Symfony\Component\HttpFoundation\RequestStack". Did you mean to call e.g. "getCurrentRequest", "getMasterRequest" or "getParentRequest"?

CodePudding user response：

First it’s not mandatory to declare your service help with

autoconfigure: true

Then you must inject

Symfony\Component\HttpFoundation\RequestStack

and make

$requestStack->getSession()

Here's the docs

https://symfony.com/doc/current/session.html

For user you inject

Symfony\Component\Security\Core\Security

and make

$security->getUser()

Here's the docs

https://symfony.com/doc/current/security.html#fetching-the-user-from-a-service

-- EDIT --

Prio symfony 5.3 session can directly be injected with

Symfony\Component\HttpFoundation\Session\SessionInterface

It's depreciated after. Here's the blog post :

https://symfony.com/blog/new-in-symfony-5-3-session-service-deprecation