module Diffing

Get a diff between the current and draft status of an ActiveRecord object field.

@param [Symbol] attr the attribute you want to diff. @param [Hash] options an options hash allowing you to pass a :format. @return [String] a diff string. If :format was nil, this could be a

[Diffy::Diff].

# File lib/drafter/diffing.rb, line 10
def differences(attr, options={:format => :html})
  if self.draft
    Diffy::Diff.new(self.send(attr), self.draft.send(attr)).to_s(options[:format])
  end
end