Locale switch in login of FOSUserBundle

Question

I'm trying to get locale switching to work in the login screen of my application. In order to do that I have links on my login page that point to site.com/ (the default locale) and site.com/en (the second locale I support). As soon as I've logged in, the switching works like a charm. However if I'm not yet authenticated the login always goes back to the default locale. My understanding was that if I use the named routes from FOSUserBundle then it's should be able to handle the locales automatically, but I can't get it to work.

My app/config/security.yml

security:
    encoders:
        FOS\UserBundle\Model\UserInterface: sha512

    role_hierarchy:
        ROLE_ADMIN:       ROLE_USER
        ROLE_SUPER_ADMIN: ROLE_ADMIN

    providers:
        fos_userbundle:
            id: fos_user.user_provider.username

    firewalls:
        main:
            pattern: ^/
            form_login:
                provider: fos_userbundle
                csrf_provider: form.csrf_provider
                login_path: fos_user_security_login
                check_path: fos_user_security_check
            logout:       true
            anonymous:    true

    access_control:
        - { path: ^/_wdt, roles: IS_AUTHENTICATED_ANONYMOUSLY }         # allow wdt for debugging
        - { path: ^/_profiler/, role: IS_AUTHENTICATED_ANONYMOUSLY }    # allow profiler for debugging
        - { path: ^/bundles/, role: IS_AUTHENTICATED_ANONYMOUSLY }      # allow assets to be loaded anonymously

        - { path: ^/login$, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/register, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/resetting, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/admin, role: ROLE_ADMIN }
        - { path: ^/, role: ROLE_USER } 

My app/config/routing.yml

# FOS User bundle
fos_user_security:
    resource: "@FOSUserBundle/Resources/config/routing/security.xml"

fos_user_profile:
    resource: "@FOSUserBundle/Resources/config/routing/profile.xml"
    prefix: /profile

#fos_user_register:
#    resource: "@FOSUserBundle/Resources/config/routing/registration.xml"
#    prefix: /register

fos_user_resetting:
    resource: "@FOSUserBundle/Resources/config/routing/resetting.xml"
    prefix: /resetting

fos_user_change_password:
    resource: "@FOSUserBundle/Resources/config/routing/change_password.xml"
    prefix: /profile

Any pointers much appreciated as I've been stuck with this for a couple of days now

Answer 1

The solution ended up being to prefix the locale to the route imports of FOSUserBundle:

# FOS User bundle
fos_user_security:
    resource: "@FOSUserBundle/Resources/config/routing/security.xml"
    prefix: /{_locale}

fos_user_profile:
    resource: "@FOSUserBundle/Resources/config/routing/profile.xml"
    prefix: /{_locale}/profile

fos_user_register:
    resource: "@FOSUserBundle/Resources/config/routing/registration.xml"
    prefix: /{_locale}/register

fos_user_resetting:
    resource: "@FOSUserBundle/Resources/config/routing/resetting.xml"
    prefix: /{_locale}/resetting

fos_user_change_password:
    resource: "@FOSUserBundle/Resources/config/routing/change_password.xml"
    prefix: /{_locale}/profile

And also change the firewall to allow locales in the anonymous routes and configure the logout_path:

security:
    encoders:
        FOS\UserBundle\Model\UserInterface: sha512

    role_hierarchy:
        ROLE_ADMIN:       ROLE_USER
        ROLE_SUPER_ADMIN: ROLE_ADMIN

    providers:
        fos_userbundle:
            id: fos_user.user_provider.username

    firewalls:
        main:
            pattern: ^/
            form_login:
                provider: fos_userbundle
                csrf_provider: form.csrf_provider
                login_path: fos_user_security_login
                check_path: fos_user_security_check
            logout:
                path:   fos_user_security_logout
            anonymous:    true

    access_control:
        - { path: ^/_wdt, roles: IS_AUTHENTICATED_ANONYMOUSLY }         # allow wdt for debugging
        - { path: ^/_profiler/, role: IS_AUTHENTICATED_ANONYMOUSLY }    # allow profiler for debugging
        - { path: ^/bundles/, role: IS_AUTHENTICATED_ANONYMOUSLY }      # allow assets to be loaded anonymously

        - { path: ^/[a-z]+/login$, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/[a-z]+/register, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/[a-z]+/resetting, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/admin, role: ROLE_ADMIN }
        - { path: ^/, role: ROLE_USER } # this must be the last match, as url patterns are checked in the order they appear

Using the JMSI18nRoutingBundle would probably be better in the long term, but it did not work as a drop in solution when I tried it and the budget for this project did not allow me to start figuring out why not, so that will be left for a future update.