Raphael habtm

habtm.rb

# in a migration

create_table :orders_dishes do |t|
  t.belongs_to :order, index: true
  t.belongs_to :dish, index: true
end


# in the models

class Order < ActiveRecord::Base
  has_and_belongs_to_many :dishes
end


class Dish < ActiveRecord::Base
  has_and_belongs_to_many :orders
end



# then you'll be able to do things like this

order = Order.find(111)
milkshake = Dish.find(888)
burger = Dish.find(999)

# we now have a `dishes` association that's like an array
order.dishes << milkshake
order.dishes << burger
order.save!

order.dishes.each do |dish|
  puts "Order #{order.id} has dish #{dish.id}"
end