How to inject service by name in symfony when using DependencyInjection

Question

I have one service which is defined in services.yaml with different parameters:

user_uploader:
    class: App\Services\UploaderPath
    arguments:
        $basePath: "%users_directory%"

worker_uploader:
    class: App\Services\UploaderPath
    arguments:
        $basePath: "%workers_directory%"

When I'm injecting that service to another service everything is fine because I can inject it via name. The problem occurrs when I want to use DI and use for example worker_uploader

public function foo(UploaderPath $workerUploader) {
}

How in this case inject proper service?

Answer 1

If you are using Symfony 3.4 or higher you can leverage bind in order to do that.

In service yaml

services:
    _defaults:
        bind:
            $userUploader: '@user_uploader'
            $workerUploader: '@worker_uploader'

    user_uploader:
        class: App\Services\UploaderPath
            arguments:
                $basePath: "%users_directory%"

    worker_uploader:
        class: App\Services\UploaderPath
            arguments:
                $basePath: "%workers_directory%"

Then let's say in a SomeController you can use it like so:

class SomeController extends AbstractController
{
    private $userUploader;
    private $workerUploader;

    public function __construct($userUploader, $workerUploader)
    {
        $this->userUploader = $userUploader;
        $this->workerUploader = $workerUploader;
    }
}

More details here https://symfony.com/doc/4.4/service_container.html#binding-arguments-by-name-or-type