EncapsulateAsMoney

Want your model attribute to be a Money instance? EncapsulateAsMoney provides a simple way to get this done!

Installation

Add this line to your application's Gemfile:

gem 'encapsulate_as_money'

And then execute:

$ bundle

Add the encapsulate_as_money method to the Active Record base class.

ActiveRecord::Base.extend(EncapsulateAsMoney)

Now say you have the model:

class MyModel < ActiveRecord::Base
  encapsulate_as_money :amount
end

Which is based on the database table:

create_table "my_models" do |table|
  table.integer "amount"
end

Now we can create and save an instance like:

MyModel.create!(amount: 5.dollars)

This will create a row as such:

id	amount
1	500

Note the value is represented as cents.

Once persisted we can find the value like:

MyModel.find_by_id(1).amount #=> 5.dollars

Note that it uses the default Money currency.