試圖找出什麼樣的關係，我應該使用

Question

西納特拉，Mongoid 3

有4種型號：User, Book, FavoriteBooks, ReadBooks, NewBooks。每個用戶都有他們的收藏夾列表，閱讀和新書。一本書屬於一個列表。但是也可以請求關於任何書籍的信息，這意味着書籍應該而不是被嵌入到FavoriteBooks, ReadBooks, NewBooks中。

該計劃的一部分：

class Book 
include Mongoid::Document 
belongs_to :favourite_books 
belongs_to :read_books 
belongs_to :new_books 
end 

class FavoriteBook 
include Mongoid::Document 
has_many :books 
end 

#.... the same for ReadBooks and NewBooks 


class User 
include Mongoid::Document 
# what else? 
end 

好像我錯過了一些東西。

我該怎麼做才能讓用戶「包含」FavoriteBooks, ReadBooks, NewBooks的列表？我應該使用一對一的關係嗎？

Answer 1

我認爲你應該重新考慮你的建模。恕我直言，它應該是書和用戶的機型，而且favorite_books，read_books和new_books都應該像這樣relationhips：

class User 
include Mongoid::Document 
has_many :favorite_books 
has_many :read_books 
has_many :new_books 

has_many :books, :through => :favorite_books 
has_many :books, :through => :read_books 
has_many :books, :through => :new_books 
end 

class Book 
include Mongoid::Document 
has_many :favorite_books 
has_many :read_books 
has_many :new_books 

has_many :users, :through => :favorite_books 
has_many :users, :through => :read_books 
has_many :users, :through => :new_books 
end 

class FavoriteBook 
include Mongoid::Document 
belongs_to :books 
belongs_to :users 
end 

#.... the same for ReadBooks and NewBooks 

我想這應該是一個更好的辦法。 =）