Rails polymorphic many to many association

Question

I\'m trying setup a generic sort of web of related objects. Let say I have 4 models.

• Book
• Movie
• Tag
• Category

I would lik

Answer 1

depending on how closesly related your movies/books db tables are

what if you declared

class Items < ActiveRecord::Base
  has_many :tags
  has_many :categories
  has_and_belongs_to_many :related_items,
       :class => "Items",
       :join_table => :related_items,
       :foreign_key => "item_id",
       :associated_foreign_key => "related_item_id"
end

class Books < Items
class Movies < Items

make sure you put type in your items table