Mint::Money
Mint::Money perform currency conversion and arithmetics with different currencies.
Installation
Add this line to your application's Gemfile:
gem 'mint-money'And then execute:
$ bundle
Or install it yourself as:
$ gem install mint-money
Usage
# Configure the currency rates with respect to a base currency (here EUR):
Money.conversion_rates('EUR', {
'USD' => 1.11,
'Bitcoin' => 0.0047
})
# Instantiate money objects:
fifty_eur = Money.new(50, 'EUR')
# Get amount and currency:
fifty_eur.amount # => 50
fifty_eur.currency # => "EUR"
fifty_eur.inspect # => "50.00 EUR"
# Convert to a different currency (should return a Money
# instance, not a String):
fifty_eur.convert_to('USD') # => 55.50 USD
# Perform operations in different currencies:
twenty_dollars = Money.new(20, 'USD')
# Arithmetics:
fifty_eur + twenty_dollars # => 68.02 EUR
fifty_eur - twenty_dollars # => 31.98 EUR
fifty_eur / 2 # => 25 EUR
twenty_dollars * 3 # => 60 USD
# Comparisons (also in different currencies):
twenty_dollars == Money.new(20, 'USD') # => true
twenty_dollars == Money.new(30, 'USD') # => false
fifty_eur_in_usd = fifty_eur.convert_to('USD')
fifty_eur_in_usd == fifty_eur # => true
twenty_dollars > Money.new(5, 'USD') # => true
twenty_dollars < fifty_eur # => true
Development
After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/mpakus/mint-money.