you can read rails guides. http://guides.rubyonrails.org/association_basics.html#polymorphic-associations
class Employee < ActiveRecord::Base has_many :subordinates, :class_name => "Employee", :foreign_key => "manager_id" belongs_to :manager, :class_name => "Employee" end With this setup, you can retrieve @employee.subordinates and @employee.manager. 2009/10/27 Sergio Ruiz <[email protected]>: > > is it possible to have a model be belong to itself? > > say i have a category, and the category can be a subcategory of another > category (or it might be a parent category).. > > is this possible, and does it make sense? > > something like: > > class Category < ActiveRecord::Base > has_many: categories > end > > i kinda think it would make more sense to use a subcategory model.. but > the system i am deriving from (which was written in php) is combining > the models.. > > thanks! > -- > Posted via http://www.ruby-forum.com/. > > > > -- tommy xiao E-mail: xiaodsATgmail.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
