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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
private
def set_locale
locale = default_locale
if user_signed_in?
begin
locale = current_user.try(:locale) || default_locale
rescue I18n::InvalidLocale
locale = default_locale
end
end
I18n.with_locale(locale) do
yield
end
end
def default_locale
ENV.fetch('DEFAULT_LOCALE') { I18n.default_locale }
end
end