rails model source

相關問題 & 資訊整理

rails model source

class Order < ActiveRecord::Base belongs_to :customer end ... The :source option specifies the source association name for a has_one :through association. ,How to use the methods added to your models by creating associations. ... The :source_type option specifies the source association type for a has_one :through ... ,有了Active Record 關聯,可以告訴Rails Model 之間的關聯,來精簡上例。以下是簡化後的程式碼: ... :source 選項給 has_one :through 關聯指定來源關聯名稱。 ,Since the association adds a method with that name to its model, using an ... :through queries where the source association is a polymorphic belongs_to . ,To get it pointing to the right table, specify the class_name and foreign_key in the User model. class User < ActiveRecord::Base has_many :authored_posts, ... ,2016年10月10日 — They are conceptually the same, just need to be different for different uses. :source is used (optionally) to define the associated model name ... ,source. 另外一個情況是當我們要透過中間表去關聯model間的多對多關係時,我們可以這樣寫: class ArticleCategory < ApplicationRecord belongs_to :article ,搭配 through 設定使用,當關聯的名稱不一致的時候,需要加上 source 指名是哪一種物件。 class Event < ApplicationRecord has_many :event_groupships ... ,2011年1月8日 — class Pet < ActiveRecord::Base has_many :dogs end class Dog ... With :source , we're telling Rails to look for an association called :breeds on ...

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rails model source 相關參考資料
A Guide to Active Record Associations - Ruby on Rails Guides

class Order &lt; ActiveRecord::Base belongs_to :customer end ... The :source option specifies the source association name for a has_one :through association.

https://guides.rubyonrails.org

Active Record Associations — Ruby on Rails Guides

How to use the methods added to your models by creating associations. ... The :source_type option specifies the source association type for a has_one :through&nbsp;...

https://guides.rubyonrails.org

Active Record 關聯— Ruby on Rails 指南

有了Active Record 關聯,可以告訴Rails Model 之間的關聯,來精簡上例。以下是簡化後的程式碼: ... :source 選項給 has_one :through 關聯指定來源關聯名稱。

https://rails.ruby.tw

ActiveRecord::Associations::ClassMethods

Since the association adds a method with that name to its model, using an ... :through queries where the source association is a polymorphic belongs_to .

https://api.rubyonrails.org

ForeignKey vs ClassName vs Source in Rails Associations ...

To get it pointing to the right table, specify the class_name and foreign_key in the User model. class User &lt; ActiveRecord::Base has_many :authored_posts,&nbsp;...

https://medium.com

Rails: difference between :source =&gt; ?? and :class_name ...

2016年10月10日 — They are conceptually the same, just need to be different for different uses. :source is used (optionally) to define the associated model name&nbsp;...

https://stackoverflow.com

Rails: has_many的參數. Rails是一個非常多預設值的框架 ...

source. 另外一個情況是當我們要透過中間表去關聯model間的多對多關係時,我們可以這樣寫: class ArticleCategory &lt; ApplicationRecord belongs_to :article

https://medium.com

Ruby on Rails 實戰聖經| ActiveRecord - 資料表關聯

搭配 through 設定使用,當關聯的名稱不一致的時候,需要加上 source 指名是哪一種物件。 class Event &lt; ApplicationRecord has_many :event_groupships&nbsp;...

https://ihower.tw

Understanding :source option of has_onehas_many through ...

2011年1月8日 — class Pet &lt; ActiveRecord::Base has_many :dogs end class Dog ... With :source , we&#39;re telling Rails to look for an association called :breeds on&nbsp;...

https://stackoverflow.com