belongs_to class_name
A belongs_to association sets up a one-to-one connection with another model, such that each instance of ..... belongs_to :manager , class_name: "Employee". ,belongs_to 關聯; has_one 關聯; has_many 關聯; has_many :through 關聯; has_one :through 關聯 ..... belongs_to :manager , class_name: "Employee". end ... ,So a class that defines a belongs_to :person association will use “person_id” as the default :foreign_key. Similarly, belongs_to :favorite_person, class_name: ... ,class User < ActiveRecord::Base has_many :books, :foreign_key => 'author_id' end class Book < ActiveRecord::Base belongs_to :author, :class_name => 'User', ... , (p.s. you don't actually need the :foreign_key or :class_name ... :user end class ListingManager < ActiveRecord::Base belongs_to :listing ..., I wish there was a good way of doing this too, but there really isn't. Probably the best workarounds are: To have two has_many s, ...,You are doing the right thing, except class_name should be a String , not Class. class UserEntry < Entry belongs_to :target, class_name: 'User' end. , belongs_to :author, class_name: "User", foreign_key: "user_id" end. 將程式碼改寫成上面那樣我們便能夠以 article.author 的方式來獲得article ...,class Event < ApplicationRecord belongs_to :paid_user, :class_name ... 在Rails 5.1 之後的版本，belongs_to 關聯的model 預設改成必填了，也就是一定要有。 ,You should be able to use: it should belong_to(:owner).class_name('Person') }. Shoulda's belong_to matcher always reads the foreign_key from the ...
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 belongs_to class_name 相關參考資料
Active Record Associations — Ruby on Rails Guides
A belongs_to association sets up a one-to-one connection with another model, such that each instance of ..... belongs_to :manager , class_name: "Employee". https://guides.rubyonrails.org Active Record 關聯— Ruby on Rails 指南
belongs_to 關聯; has_one 關聯; has_many 關聯; has_many :through 關聯; has_one :through 關聯 ..... belongs_to :manager , class_name: "Employee". end ... https://rails.ruby.tw belongs_to (ActiveRecord::Associations::ClassMethods) - APIdock
So a class that defines a belongs_to :person association will use “person_id” as the default :foreign_key. Similarly, belongs_to :favorite_person, class_name: ... https://apidock.com belongs_to with :class_name option fails - Stack Overflow
class User < ActiveRecord::Base has_many :books, :foreign_key => 'author_id' end class Book < ActiveRecord::Base belongs_to :author, :class_name => 'User', ... https://stackoverflow.com has_many :through with class_name and foreign_key - Stack Overflow
(p.s. you don't actually need the :foreign_key or :class_name ... :user end class ListingManager < ActiveRecord::Base belongs_to :listing ... https://stackoverflow.com Rails belongs_to class_name with the correct foreign keys? - Stack ...
I wish there was a good way of doing this too, but there really isn't. Probably the best workarounds are: To have two has_many s, ... https://stackoverflow.com Rails: get belongs_to class_name - Stack Overflow
You are doing the right thing, except class_name should be a String , not Class. class UserEntry < Entry belongs_to :target, class_name: 'User' end. https://stackoverflow.com Rails: has_many的參數– 李威辰– Medium
belongs_to :author, class_name: "User", foreign_key: "user_id" end. 將程式碼改寫成上面那樣我們便能夠以 article.author 的方式來獲得article ... https://medium.com Ruby on Rails 實戰聖經| ActiveRecord - 資料表關聯
class Event < ApplicationRecord belongs_to :paid_user, :class_name ... 在Rails 5.1 之後的版本，belongs_to 關聯的model 預設改成必填了，也就是一定要有。 https://ihower.tw Shoulda belongs_to with class_name and foreign_key - Stack Overflow
You should be able to use: it should belong_to(:owner).class_name('Person') }. Shoulda's belong_to matcher always reads the foreign_key from the ... https://stackoverflow.com |