lib/locomotive/steam/services/translator_service.rb
module Locomotive
module Steam
class TranslatorService
attr_accessor_initialize :repository, :current_locale
# Return the translation described by a key.
#
# @param [ String ] key The key of the translation.
# @param [ Hash ] options This includes the following options: count, locale (The locale we want the translation in), scope (If specified, instead of looking in the translations, it will use I18n instead)
#
# @return [ String ] the translated text or nil if not found
#
def translate(input, options = {})
locale = options['locale'] || self.current_locale
scope = options.delete('scope')
key = scope.present? ? "#{scope.gsub('.', '_')}_#{input}" : input
key = "#{key}_#{pluralize_prefix(options['count'])}" if options['count']
values = find_values_by_key(key)
# FIXME: important to check if the returned value is nil (instead of nil + false)
# false being reserved for an existing key but without provided translation)
if (translation = values[locale.to_s]).present?
_translate(translation, options)
elsif output = I18n.t(input, scope: scope&.split('.'), locale: locale, default: nil)
output
else
Locomotive::Common::Logger.warn "Missing translation '#{input}' for the '#{locale}' locale".yellow
ActiveSupport::Notifications.instrument('steam.missing_translation', input: input, locale: locale)
input
end
end
private
def find_values_by_key(input)
(@all_values ||= repository.group_by_key)[input] || {}
end
def _translate(string, options)
::Liquid::Template.parse(string).render(options)
end
def pluralize_prefix(count)
case count.to_i
when 0 then 'zero'
when 1 then 'one'
when 2 then 'two'
else 'other'
end
end
end
end
end