Robby on Rails: Sneaking Rails through the (Legacy) system

Sneaking Rails through the (Legacy) system

Robby Russell — Fri, 14 Apr 2006 18:01:00 -0500

I’ll be posting stuff in the next few days about acts_as_legacy. For those not at Canada on Rails... I announced a small project that I’m going to be working on.

Acts as Legacy!

Here are my slides… up til I tried to do a live demo. ;-)


# Inventory model
class Inventory < ActiveRecord::Base
  acts_as_legacy :table_name => 'inventory',
                 :primary_key => 'prod_id',

  has_one :product, :foreign_key => self.primary_key

  column_alias :quan_in_stock, :stock

end

Let’s try something a little different…


# SalesPerson model
class SalesPerson < ActiveRecord::Base
  acts_as_legacy :table_name => 'sales_person',
                 :primary_key 'sales_p_id',
                 :column_alias => 'sales_p_'

  validates_presence_of( :name, :email, :phone ) 
end

# usage....
SalesPerson.find( 7 ).sales_p_name
=> 'Nigel'
SalesPerson.find( 7 ).name
=> 'Nigel'

The Slideshow

Sneaking Rails through the (Legacy) System (quicktime)
Sneaking Rails through the (Legacy) System (flash)

...Jeremy posted his slides as well. :-)

"Sneaking Rails through the (Legacy) system" by Fabio Akita

Thu, 29 Jun 2006 16:06:36 -0500

I have nothing against the Surrogate Key-only for Active Record but do you intend to support intelligent keys (as the username in a User model) or even composite primary keys? Many people seems to miss those.

"Sneaking Rails through the (Legacy) system" by Rob Goodwin

Sun, 30 Apr 2006 13:37:12 -0500

has commenting been fixed yet?

"Sneaking Rails through the (Legacy) system" by Rob Sanheim

Thu, 20 Apr 2006 11:56:08 -0500

Hey Robby,

Is the code for this available anywhere?