Data modeling in rails: example of has_many :through migrations

gistfile1.rb

class CreateCarrots < ActiveRecord::Migration
  def change
    create_table :carrots do |t|
      t.string :color
      t.timestamps
    end
  end
end

class CreateBunnies < ActiveRecord::Migration
  def change
    create_table :bunnies do |t|
      t.string :name
      t.timestamps
    end
  end
end

class CreateCommunities < ActiveRecord::Migration
  def change
    create_table :communities do |t|
      t.integer :carrot_id
      t.integer :bunny_id
      t.timestamps
    end
  end
end