Displaying 1 result from an estimated 1 matches for "authorized_by_id".
2006 Aug 30
1
Single Table Inheritance with self-referential join
....column :type, :string
# common attributes
t.column :photo_name, :string
t.column :created_at, :datetime
t.column :updated_at, :datetime
t.column :order_id, :integer
# attributes for type=Photo
t.column :date_taken, :datetime
t.column :pair_id, :integer
# attributes for type=Preview
t.column :authorized_by_id, :integer
t.column :photo1_id, :integer
t.column :photo2_id, :integer
# attributes for type=Final
t.column :photo1_id, :integer
t.column :photo2_id, :integer
end
Now for the hierarchy of model objects:
class Stereo < ActiveRecord::Base
end
class Photo < Stereo
end
class Preview < St...