Symfony 4. How to access the service from controller without dependency injection?

Question

I have several services: DieselCaseService, CarloanCaseService LvCaseService.

The controller decides which of services to get.

$type = $quickCheck[\         


        

Answer 1

For any "multiple instances of same type by key" situation, you can use autowired array.

1. Autodiscovery Services with App\ namespace

services:
    _defaults:
        autowire: true

    App\:
        resource: ../src

2. Require autowired array in Constructor

cases[$case->getName()] = $cases;
        }
    }

    public function someAction(): void
    {
        $dieselCase = $this->cases['diesel']; // @todo maybe add validation for exisiting key
        $dieselCase->anyMethod();
    }
}

3. Register compiler pass in Kernel

The autowired array functionality is not in Symfony core. It's possible thanks to compiler passes. You can write your own or use this one:

use Symplify\PackageBuilder\DependencyInjection\CompilerPass\AutowireArrayParameterCompilerPass;

final class AppKernel extends Kernel
{
    protected function build(ContainerBuilder $containerBuilder): void
    {
        $containerBuilder->addCompilerPass(new AutowireArrayParameterCompilerPass);
    }
}

That's it! :)

I use it on all my projects and it works like a charm.

Read more in post about autowired arrays I wrote.