Extract all expanded i18n keys and values

i18n_debug.rb

# Execute following in rails console after invoking i18n.t() on a known key to load the translations

def flatten_hash(hash)
  hash.each_with_object({}) do |(k, v), h|
    if v.is_a? Hash
      flatten_hash(v).map do |h_k, h_v|
        h["#{k}.#{h_k}".to_sym] = h_v
      end
    else 
      h[k] = v
    end
   end
end

flatten_hash(I18n.backend.translations[:en])