btrc-hub/backend/app/controllers/locales_controller.rb

class LocalesController < ApplicationController
  def index
    locales = Locale.where(deprecated_at: nil).order(:created_at).map do |locale|
      { code: locale.code_before_type_cast, name: locale.name }
    end

    response.headers['Cache-Control'] = 'no-store'
    render json: { locales: }
  end
end