gistfile1.txt

# I do this:

module ActiveRecord
  class Base
    @@old_save = instance_method(:save)

    def save *args
      @@old_save.bind(self).call *args
    end
  end
end

# Then, when saving a model, I get this:
#
#     Failure/Error: bob.transactions << Transaction.new
#     NoMethodError:
#       super: no superclass method `save' for #<Transaction:0x10a331d40>