one-to-one-relationship

gistfile1.rb

create_table "locations", :force => true do |t|
    t.integer  "shelf_life_id"
    t.datetime "created_at",    :null => false
    t.datetime "updated_at",    :null => false
    t.string   "name"
  end

  create_table "shelf_lives", :force => true do |t|
    t.integer  "item_kind_id"
    t.integer  "duration"
    t.datetime "created_at",   :null => false
    t.datetime "updated_at",   :null => false
  end