How to inject a repository into a service in Symfony?

Question

I need to inject two objects into ImageService. One of them is an instance of Repository/ImageRepository, which I get like this:

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Answer 1

Symfony 3.3, 4 and 5 makes this much simpler.

Check my post How to use Repository with Doctrine as Service in Symfony for more general description.

To your code, all you need to do is use composition over inheritance - one of SOLID patterns.

1. Create own repository without direct dependency on Doctrine

repository = $entityManager->getRepository(Image::class);
    }

    // add desired methods here
    public function findAll()
    {
        return $this->repository->findAll();
    }
}

2. Add config registration with PSR-4 based autoregistration

# app/config/services.yml
services:
    _defaults:
        autowire: true

    MycompanyMainBundle\:
        resource: ../../src/MycompanyMainBundle

3. Now you can add any dependency anywhere via constructor injection

use MycompanyMainBundle\Repository\ImageRepository;

class ImageService
{
    public function __construct(ImageRepository $imageRepository)
    {
        $this->imageRepository = $imageRepository;
    }
}