CurrencyConversion

Convert Money Amounts between currencies. This library uses an OTP worker to save current conversion rates.

Installation

The package can be installed by adding currency_conversion to your list of dependencies in mix.exs:

def deps do
  [{:currency_conversion, "~> 0.1.1"}]
end

Configuration

There are two config options:

• source - Configure which Data Source Should Be Used.
  • Type: atom
  • Default: CurrencyConversion.Source.Fixer
• refresh_interval - Configure how often the data should be refreshed. (in ms)
  • Type: integer
  • Default: 86_400_000 (Once per Day)

config :currency_conversion,
  source: CurrencyConversion.Source.Fixer,
  refresh_interval: 86_400_000

Custom Source

A custom source can be implemented by using the behaviour CurrencyConversion.Source and reconfiguring the source config.

It only has to implement the function load/0, which produces a struct of type %CurrencyConversion.Rates{}.

Usage

Only the function CurrencyConversion.convert/3 is exposed to the user. The library money is used to represent money amounts.

Example

iex> CurrencyConversion.convert(Money.new(7_00, :CHF), :USD)
%Money{amount: 10_50, currency: :USD}