Use array from parameters.yml in routing.yml

Question

I got a locales declaration in my parameters.yml

parameters:
    locale:            en
    locales:           [ en, de, fr, it, es, pt, ru, ja, zh ]

and want to reuse the locales param in routing.yml

homepage_locale:
    pattern: /{_locale}
    defaults: { _controller: SiteBundle:World:index }
    requirements: { _locale: %locales% }

But this obviously results in

The container parameter "locales", used in the route configuration value 
"%locales%", must be a string or numeric, but it is of type array.

Is there a way to reuse this param or do I really have to write the locales as a string to satisfy this yaml/regex format, like this:

en|de|fr|it|es|pt|ru|ja|zh

Answer 1

What about it:

parameters:
    locale:            en
    locales:           en|de|fr|it|es|pt|ru|ja|zh

Answer 2

In src/AppBundle/DependencyInjection/AppExtension.php

you can add in load function this code

    $languages = $container->getParameter('languages');
    $container->setParameter('languages_string', implode('|', $languages));

Then you will can use in your annotation

     *     requirements={"_locale": "%languages_string%"},

It prevent from duplicate parameters in your config file.

Answer 3

Maybe you must try

_locale: en|de|fr|it|es|pt|ru|ja|zh

Good look