This gem provides access to the Central Bank of Russia currency exchange. It can be used as a standalone exchange rates parser and also extends Money::Bank::VariableExchange with Money::Bank::RussianCentralBank
Add this line to your application's Gemfile:
gem 'russian_central_bank'
And then execute:
$ bundle
Or install it yourself as:
$ gem install russian_central_bank
NOTE: use 0.x version of russian_central_bank for money versions < 6.0
require 'russian_central_bank'
# Today rates
Money::Bank::RussianCentralBankFetcher.new.perform()
# => [{:code=>"USD", :nominal=>1, :value=>65.1639}, ...]
# For any other date
Money::Bank::RussianCentralBankFetcher.new.perform(Date.new(2010, 12, 31))
# => [{:code=>"USD", :nominal=>1, :value=>30.4769}, ...]require 'russian_central_bank'
Money.locale_backend = :currency
bank = Money::Bank::RussianCentralBank.new
Money.default_bank = bank
# Load today's rates
bank.update_rates
# Exchange 1000 USD to RUB
Money.new(1000_00, "USD").exchange_to('RUB').format # => 64.592,50 ₽
# Use indirect exchange rates, USD -> RUB -> EUR
Money.new(1000_00, "USD").exchange_to('EUR').format # => €888,26# Specify rates date
bank.update_rates(Date.new(2010, 12, 31))
Money.new(1000_00, "USD").exchange_to('RUB').format # => 30.476,90 ₽
# Check last rates update
bank.rates_updated_at
# Check on which date rates were updated
bank.rates_updated_on# Use ttl attribute to enable rates autoupdate
bank.ttl = 1.day
# Check expiration date
bank.rates_expired_atThere are some cases, when the cbr.ru doesn't return HTTP 200.
To avoid issues in production, you use fallback:
bank = Money::Bank::RussianCentralBank.new
begin
bank.update_rates
rescue Money::Bank::RussianCentralBankFetcher::FetchError => e
Rails.logger.info "CBR failed: #{e.response}"
## fallback
Money.default_bank = Money::Bank::VariableExchange.new
Money.default_bank.add_rate(:usd, :eur, 1.3)
Money.default_bank.add_rate(:eur, :usd, 0.7)
end- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
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