php - Symfony2: how to read parameters array in config.yml

Question

my parameters.yml file has:

parameters:
     title:
          subtitle: value

i want to pass the value to a service in config.yml

my_service:
        class: the_class
        arguments: [ %title.subtitle%] //didn't work
        arguments: [ %title['subtitle']%] //didn't work

how can i do this?

Answer 1

Symfony2 doesn't support reading individual elements on a parameter array using the % notation. What you are doing is not possible out of the box.

The only way to do that would be to create your own SymfonyComponentDependencyInjectionParameterBagParameterBag which would support fetching an array item.