routing for has_and_belongs_to_many Association

rubyonrails-talk
1

I got two models, Book and Word.

class Book < ActiveRecord::Base   has_and_belongs_to_many :words end

class Word < ActiveRecord::Base    has_and_belongs_to_many :books end

I got a Join Tables for has_and_belongs_to_many Associations

class CreateBooksWords < ActiveRecord::Migration   def self.up     create_table :books_words, :id => false do |t|       t.integer :book_id       t.integer :word_id

      t.timestamps     end   end

  def self.down     drop_table :books_words   end end

Now I want to create Routing, and user can insert words for a book. How do I do that?