在我的項目中,用戶有一個酒店,並且每個酒店都有與之相關的房間類型。簡單地說,模型是Ruby on Rails構建使id無
class User < ActiveRecord::Base
has_many :hotels
class Hotel < ActiveRecord::Base
belongs_to :user
has_many :roomtypes
class Roomtype < ActiveRecord::Base
attr_accessible :maxguests, :name
belongs_to :hotel
如果我做的命令:
@user = User.find(1)
@user.hotels.find(1).roomtypes.build(name: "something", maxguests: "2")
控制檯回報:
#<Roomtype id: nil, name: "something", maxguests: 2, created_at: nil, updated_at: nil, hotel_id: 1>
出於某種原因,Roomtype ID和時間戳是零。任何想法爲什麼?
同樣的答案,同一時間=> +1 – apneadiving
請參閱http://stackoverflow.com/questions/403671/the-differences-between-build-create-and-create-and-when-should-they-be-我們可以更詳細地描述這些方法。 – gregates
duh謝謝..... –