Basic HABTM

gistfile1.rb

class User < ActiveRecord::Base
  has_and_belongs_to_many :skills
end

class Skill < ActiveRecord::Base
  has_and_belongs_to_many :users
end


class CreateSkillsUsers < ActiveRecord::Migration
  def change
    create_table :skills_users do |t|
      t.integer :skill_id 
      t.integer :user_id 
    end
    
    add_index :skills_users, [:skill_id, :user_id], :unique => true,  :name => :skills_users1 
    
  end
end