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moneyjs-rails

Since we needed to add foreign currency to pictrs.com (Welcome Swtzerland to Europe!), we decided to do it just clientside with the great Money.js You maybe want to use it with https://github.com/torbjon/accountingjs-rails

Install

Add it to your Rails application's Gemfile:

gem 'moneyjs-rails'

Then bundle install.

Setup Exchange Rates via openexchangerates.org (optional)

Add this line to your application's Gemfile:

gem 'open_exchange_rates'

And then execute:

$ bundle

If you are using Rails good place to add this is config/initializers/open_exchange_rates.rb

OpenExchangeRates.configure do |config|
  config.app_id = "YourAppID"
end

To save Bytes you can configure to use only specific cureencies, e.g. in config/initializers/moneyjs.rb

Moneyjs.configure do |config|
  config.only_currencies = ['CHF','EUR']
end

At the same place you can define your default currency,

config.default_from_currency = 'EUR'

so you can use (see Usage) fx(1000).to("CHF");

Usage

Add the following to your app/assets/javascripts/application.js:

//= require moneyjs

If you've set up the exchange rates via openexchangerates.org above, add to app/views/layouts/application.html.erb

<%= moneyjs_currency_rates %>

Otherwise do it your self like this:

fx.base = "EUR";
fx.rates = {
  "EUR" : 1, // needed 
  "GBP" : 0.647710, // replace, its wrong !
  "HKD" : 7.781919, // replace, its wrong !
  "USD" : 1.4, // replace, its wrong !
  
}

Then you can:

// From any currency, to any currency:
fx.convert(12.99, {from: "EUR", to: "CHF"});

// Chaining sugar:
fx(1000).from("USD").to("GBP");
fx(1000).to("AED");

// With simple settings and defaults, making this possible:
fx.convert(5318008);
fx(5318008).to("AED");

See the full usage details on the money.js site with a fancy playground.

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money.js for Rails 3

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