Currency Conversion using the European Central Bank's Euro foreign exchange reference rates.
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lib/ecb
spec
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LICENSE.txt
README.md
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ecb-currency_converter.gemspec

README.md

ECB::CurrencyConverter

Currency Conversion using the European Central Bank's Euro foreign exchange reference rates. All calculations are performed and returned in +BigDecimal+.

Installation

Add this line to your application's Gemfile:

gem 'ecb-currency_converter'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ecb-currency_converter

Usage

To convert between two currencies:

ECB::CurrencyConverter.exchange(100, 'EUR', 'USD').to_f
=> 133.74

ECB::CurrencyConverter.exchange(100, 'USD', 'EUR').to_f
=> 74.77194556602363

To convert between two currencies using historical data:

date = Date.parse('2013-05-17')

ECB::CurrencyConverter.exchange(100, 'EUR', 'USD', date).to_f
=> 128.69

ECB::CurrencyConverter.exchange(100, 'USD', 'EUR', date).to_f
=> 77.70611547128759

To get the most recent exchange rate between two currencies:

ECB::CurrencyConverter.rate('EUR', 'USD').to_f
=> 1.3374

ECB::CurrencyConverter.rate('USD', 'EUR').to_f
=> 0.7477194556602362

To get the historical exchange rate between two currencies:

date = Date.parse('2013-05-17')

ECB::CurrencyConverter.rate('EUR', 'USD', date).to_f
=> 1.2869

ECB::CurrencyConverter.rate('USD', 'EUR', date).to_f
=> 0.777061154712876

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request