Date Exchange Bank A gem that adds a Money::Bank with an ability to exchange_with a date or a given rate.

Usage:

require 'money/bank/date_exchange_bank'

Money.default_bank = Money::Bank::DateExchangeBank.new

The DateExchangeBank can also take a callable importer for exchange rate importing and updating. The callable importer should add rates by calling the provided function.

A basic importer could look something like:

importer = ->(add_rate) { add_rate.call('USD', 'EUR', 0.75) }

Money Extension

A module that overrides the Money#exchange_to method to add support for exchanges with a date or a provided rate. This can be used alongside the Money::Bank::DateExchangeBank and a custom Store to support exchanging with historical exchange rates or a known rate.

require 'money/extensions'

Money.include Extensions::Money

Money.new(1000, 'USD').exchange_to('EUR', date: Time.new(2018, 8, 7))
Money.new(1000, 'USD').exchange_to('EUR', rate: 0.75)