A decorator that can return faked data for defined fields

gistfile1.rb

# depends on: https://github.com/masover/blankslate
#
# user = User.new(:name => 'foo')
#     user.name #=> 'foo'
#     Decorator.new(user).name #=> 'foo'
#
# but 
#     Decorator.new(user, :name => 'bar').name #=> 'bar'
class Decorator < BlankSlate

  def initialize(record, fields = {})
    @record = record
    @fields = (fields || {}).symbolize_keys
  end

  # restore default send method
  def send(*args)
    __send__(*args)
  end

private

  def method_missing(sym, *args, &block)
    @fields[sym] || @record.send(sym, *args, &block)
  end

end