Ordering AR callbacks (the real code uses ActiveResource)

callback_ordering.rb

require 'active_record'
ActiveRecord::Base.establish_connection adapter: 'sqlite3', database: ':memory:'

ActiveRecord::Schema.define do
  self.verbose = false  
  create_table(:users) { |t| t.string :name }
end

class User < ActiveRecord::Base
  after_save :append_context
  def append_context
    self.name = name + ':parent'
  end
end

class UserChild < User
  def append_context
    self.name += ':BEFORE'
    super
    self.name += ':AFTER'
  end
end

UserChild.create!(name: 'original').name  # => "original:BEFORE:parent:AFTER"