dependency injection - How can i inject dependencies to Symfony Console commands?

Question

I'm writing an open source application uses some Symfony components, and using Symfony Console component for interacting with shell.

But, i need to inject dependencies (used in all commands) something like Logger, Config object, Yaml parsers.. I solved this problem with extending SymfonyComponentConsoleCommandCommand class. But this makes unit testing harder and not looks correct way.

How can i solve this ?

Answer 1

Since Symfony 4.2 the ContainerAwareCommand is deprecated. Use the DI instead.

namespace AppCommand;

use SymfonyComponentConsoleCommandCommand;
use DoctrineORMEntityManagerInterface;

final class YourCommand extends Command
{
    /**
     * @var EntityManagerInterface
     */
    private $entityManager;

    public function __construct(EntityManagerInterface $entityManager)
    {
        $this->entityManager = $entityManager;

        parent::__construct();
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        // YOUR CODE
        $this->entityManager->persist($object1);    
    }
}