Money Open Exchange Rates + Historical (for Rails)

Simple fork, with an added bank#exchange_at based on money-historical-bank gem.

For now, the cache is based on Rails.cache, it doesn't follow OXR's cache logic.

My (intended) usage:

Money gem patch

module MoneyExt
  module OxrMoneyExtender
    extend ActiveSupport::Concern

    included do
      def exchange_at(date, other_currency, &rounding_method)
        other_currency = Money::Currency.wrap(other_currency)
        if currency == other_currency
          self
        else
          @bank.exchange_at(date, self, other_currency, &rounding_method)
        end
      end
    end
  end
end

and in an initializer:

Rails.application.reloader.to_prepare do
  Money.include(MoneyExt::OxrMoneyExtender)
end

And now you can call exchange_at on any money:

Money.new(700, :USD).exchange_at(Date.new(2024,4,4), :EUR)