Licitator/httpdocs/config/routes/sonata_admin.yaml

admin_area:
    resource: "@SonataAdminBundle/Resources/config/routing/sonata_admin.xml"
    prefix: /{_locale}/admin
    requirements:
        _locale: '%app_locales%'
    defaults:
        _locale: '%locale%'
_sonata_admin:
    resource: .
    type: sonata_admin
    prefix: /{_locale}/admin
    requirements:
        _locale: '%app_locales%'
    defaults:
        _locale: '%locale%'
        keepRequestMethod: true