Module: SpookAndPuff::MoneyAttributes

Defined in:
lib/spook_and_puff/money_attributes.rb

Overview

A module for extending ActiveRecord::Base subclasses. It provides a macro for defining money accessors; it produces writers which coerce the input into SpookAndPuff::Money instances.

Instance Method Summary collapse

Instance Method Details

#attr_money(*attrs) ⇒ Object

A class macro which defines serialization and attribute writers for the specified attributes. This ensures that the specified attributes will always be instances of SpookAndPuff::Money.

Parameters:

  • Array (Symbol)

Returns:

  • nil



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# File 'lib/spook_and_puff/money_attributes.rb', line 15

def attr_money(*attrs)
  attrs.each do |attr|
    class_eval %{
      def #{attr}
        if self[:#{attr}]
          @#{attr} ||= SpookAndPuff::Money.new(self[:#{attr}]) 
        end
      end

      def #{attr}=(value)
        if value.nil?
          @#{attr}, self[:#{attr}] = nil
        else
          @#{attr} = case value
          when SpookAndPuff::Money then value
          else SpookAndPuff::Money.new(value)
          end

          self[:#{attr}] = @#{attr}.raw
        end

        @#{attr}
      end
    }
  end

  nil
end