From: Paul Mckibbin <pmckibbin@...>
Date: 2010-01-27T02:27:05+09:00
Subject: Using ActiveRecord in subclasses

Hi, I'm using ActiveRecord and ActiveSupport in a non-rails environment
to connect to multiple databases, and I've found the following (single
database) to cause me an error. Note that params is my database settings
and omitted for obvious reasons. pages, components, and books are all
tables in the same db.

require 'active_record'
module TestDB
  class Inherited < ActiveRecord::Base
    self.logger
    self.default_timezone :utc
    self.establish_connection(params)
  end
  class Page < Inherited
    puts self.name
    puts self.table_name
  end
  class Book < ActiveRecord::Base
    puts self.name
    puts self.table_name
  end
end
class Component < ActiveRecord::Base
  puts self.name
  puts self.table_name
end

outputs:

TestDB::Page <= expected
inheriteds <= Hmm, table name for the parent?
TestDB::Book <= also expected
books <= Seems to be using the Inherited connection
Component <= Yep, no module name
components <= also using the Inherited connection

Is this expected behaviour from an inherited class. Is there anyway to
scope the ActiveRecord connection without resorting to plugins or other
gems?

Mac
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