Symfony2 service arguments (as an expression language string)

Question

As the Symfony2 documentation describes, it's possible to inject an "expression language" string as a service argument, but it apperently doesn't work, even with a simple implementation :

services:
    my_service:
        class:     AAA\BBBBundle\ClassName
        arguments: ["@=container.hasParameter('param_name') ? parameter('param_name') : 'default_value'"]

i got:

Fatal error: Uncaught exception 'Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException' with message 'The service "my_service" has a dependency on a non-existent service "=container.hasparameter('some_param') ? parameter('some_param') : 'default_value'".' in /[...]/symfony/symfony/src/Symfony/Component/DependencyInjection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php on line 59

have i missed something ?

i am currently under the 2.3.9 version of Symfony, indeed it's composer.json file does'nt contain yet the Expression language bundle, so the problem come surely from here, thanks for the scent ! — Mohamed Ayoub BENJELLOUN
– Mohamed Ayoub BENJELLOUN, Commented Jan 29, 2014 at 9:55

Victor Bocharsky · Accepted Answer · 2015-07-02 08:39:10Z

1

Try to clear fully app/cache dir

edited Jul 2, 2015 at 8:39

answered Jan 28, 2014 at 16:43

Victor Bocharsky

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