overture8

class FullTimeEmployee < Employee
end

temp_employee.rb

class TempEmployee < Employee
end

student_employee.rb

overture8

development:
  adapter: mysql
  encoding: utf8
  reconnect: false
  database: dablog_development
  pool: 5
  username: root
  password:
  host: localhost

overture8

class PeopleController < ApplicationController
  caches_page :index

end

overture8

def create
  expire_page :action => :index

end

def update
  expire_page :action => :index

end

overture8

class PeopleController < ApplicationController
   cache_sweeper :person_sweeper, :only => [:create, :update, :destroy]  ...
end

overture8

class PersonSweeper < ActionController::Caching::Sweeper
  observe Person

  def after_create(person)
    expire_cache_for person
  end

  def after_update(person)
    expire_cache_for person
  end

overture8

class Company < ActiveRecord::Base
  has_many :addresses
end

class Address < ActiveRecord::Base
  belongs_to :company
end

overture8

class Company < ActiveRecord::Base
  has_many :addresses
  accepts_nested_attributes_for :addresses, :allow_destroy => true
end

overture8

<% form_for setup_company(@company) do |f| %>
  <%= f.label :name %><br />
  <%= f.text_field :name %><br />
 
  <% f.fields_for :addresses do |address_form| %>
    <%= f.label :street %><br />
    <%= address_form.text_field :street %><br />
    <%= f.label :city %><br />
    <%= address_form.text_field :city %><br />
    <%= f.label :post_code %><br />

overture8

module ApplicationHelper
  def setup_company(company)
    returning(company) do |c|
      c.addresses.build if c.addresses.empty?
    end
  end
end