symfony - Symfony2 Use PHP Class Constant in YAML Config?

Question

I know this is probably not possible, but is there a clean way to use a PHP class constant within a YAML config/services/etc. file for Symfony2?

For example, if I have this:

namespace MyBundleDependencyInjection;

class MyClass
{
    const MY_CONST = 'cookies';
}

Is something like this possible (in a .yml file):

services:
    my_service:
        class: SomeClass
        arguments:
            - %MyBundleDependencyInjectionMyClass::MY_CONST%

That'd go a long way in helping maintain consistency between the two.

Answer 1

For Symfony >=2.4 you can use expression language

Example:

'@=constant("Symfony\Bridge\Monolog\Logger::INFO")'