Money Open Exchange Rates

A gem that calculates the exchange rate using published rates from open-exchange-rates

Usage

require 'money/bank/open_exchange_rates_bank'
moe = Money::Bank::OpenExchangeRatesBank.new
moe.cache = 'path/to/file/cache'
moe.app_id = 'your app id from https://openexchangerates.org/signup'
moe.update_rates

# (optional)
# set the seconds after than the current rates are automatically expired
# by default, they never expire
moe.ttl_in_seconds = 86400
# Store in cache
moe.save_rates

Money.default_bank = moe

You can also provide a Proc as a cache to provide your own caching mechanism perhaps with Redis or just a thread safe Hash (global). For example:

moe.cache = Proc.new do |v|
  key = 'money:exchange_rates'
  if v
    Thread.current[key] = v
  else
    Thread.current[key]
  end
end

Tests

As of the end of August 2012 all requests to the Open Exchange Rates API must have a valid app_id. You can place your own key on a file or environment variable named TEST_APP_ID and then run:

bundle exec rake

Refs

Contributors

Wayne See (8) Kevin Ball (3) Paul Robinson (2) Michael Morris (2) Dmitry Dedov (2) chatgris (2) Sam Lown (1) Fabio Cantoni (1)

License

The MIT License