mastodon/app/controllers/concerns/localized.rb

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# frozen_string_literal: true
module Localized
extend ActiveSupport::Concern
included do
around_action :set_locale
end
def set_locale
locale = current_user.locale if respond_to?(:user_signed_in?) && user_signed_in?
locale ||= session[:locale] ||= default_locale
locale = default_locale unless I18n.available_locales.include?(locale.to_sym)
I18n.with_locale(locale) do
yield
end
end
private
def default_locale
if ENV['DEFAULT_LOCALE'].present?
I18n.default_locale
else
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case request_locale
when /en\b/, nil
I18n.default_locale
else
request_locale
end
end
end
def request_locale
http_accept_language.language_region_compatible_from(I18n.available_locales)
end
end