I have become Brian Muller

clever_code.rb

class User < ActiveRecord::Base
  geocoded_by :address
  
  def save_with_geocode
    geocode if address_changed?
    save
  end

  def address
    address_compenents.map { |e| self.send e }.join(" ")
  end

  def address_changed?
    address_compenents.inject(false) { |bool,e|
      bool || self.send("#{e}_changed?")
    }
  end

  private
  def address_compenents
    %w{address_line_1 address_line_2 city state zip_code}
  end
end

address_changed? could be reduced to:

address_compenents.map { |e| send "#{e}_changed?" }.any?

You're almost me... :)

address_compenents could be a class variable too since it's static.

I'm trying really hard to prove there's only one me.

Ohhhh, good call on the 'any?'. I had also considered making the address components a constant just to clarify that yes, this is just data storage.