Multiple interface implementations, how to determine which DInject implementation?

Question

symfony

There is a UserRepo interface and there are 2 implementations, DoctrineUserRepo and InMemoryUserRepo for mocks. Symphony service container is throwing an error now

Cannot autowire service...: argument "$userRepository" of method "__construct()" references interface "UserReposito  
  ry" but no such service exists. You should maybe alias this interface to one of these existing services: "...DoctrineUserRepository", "....InMemoryUserRepository".

How to make it take InMemoryRepo in tests, and where it needs another, 2nd or 3rd, etc. implementation?

Answer 1

The documentation mentions this: https://symfony.com/doc/current/service_container/...

# services.yml

services:
    App\Repository\UserRepoInterface: '@App\Repository\DoctrineUserRepo'

For a test environment, you can override:

# services_test.yml

services:
    App\Repository\UserRepoInterface: '@App\Repository\InMemoryUserRepo'