i18n_namespace

I18n.namespace = :administrator

# with a namespace set, these are the lookup keys
# administrator.home.index.content
# home.index.content
t('home.index.content')

# your namespace can be an array too
I18n.namespace = [:administrator, :special_club]

# administrator.special_club.home.index.content
# administrator.home.index.content
# home.index.content