rails has_many source
The simplest rule of thumb is that you should set up a has_many :through relationship if you need to work with the relationship model as an independent entity. ,Rails 支援以下六種關聯：. belongs_to; has_one; has_many; has_many :through; has_one :through; has_and_belongs_to_many. ,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 has_many : ... ,2022年9月19日 — Steps to reproduce Given a class like: class Foo has_many :subscribers, through: :subscriptions, source: :user end Rails 6.1.7 raises errors ... ,2019年11月6日 — The source is used when you need Rails to know that you have creatively used has _many: through association. For example, a post can have many ... ,Specifies type of the source association used by #has_many :through queries where the source association is a polymorphic #belongs_to. :validate. When set to ... ,2020年4月25日 — Now associations in rails is a way to create methods that can be called on a database record to find its associated record. We could get a user ... ,2018年4月26日 — has_many :article_categories, dependent: :destroy has_many :types, through: :article_categories, source: :category end. scope參數. 當想要在 ... ,Ruby on Rails. Contribute to rails/rails development by creating an ... # [+:source_type+] # Specifies type of the source association used by #has_many ... ,2011年1月8日 — Specifies the source association name used by has_many :through => :queries . Only use it if the name cannot be inferred from the association.
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 rails has_many source 相關參考資料
Active Record Associations
The simplest rule of thumb is that you should set up a has_many :through relationship if you need to work with the relationship model as an independent entity. https://guides.rubyonrails.org Active Record 關聯
Rails 支援以下六種關聯：. belongs_to; has_one; has_many; has_many :through; has_one :through; has_and_belongs_to_many. https://rails.ruby.tw ActiveRecord - 資料表關聯- Rails 實戰聖經
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 has_many : ... https://ihower.tw ActiveRecord 6.1: has_many, through, source raises ...
2022年9月19日 — Steps to reproduce Given a class like: class Foo has_many :subscribers, through: :subscriptions, source: :user end Rails 6.1.7 raises errors ... https://github.com ForeignKey vs ClassName vs Source in Rails Associations.
2019年11月6日 — The source is used when you need Rails to know that you have creatively used has _many: through association. For example, a post can have many ... https://medium.com has_many (ActiveRecord::Associations::ClassMethods)
Specifies type of the source association used by #has_many :through queries where the source association is a polymorphic #belongs_to. :validate. When set to ... https://apidock.com Please explain the has_many, through: source: Rails ...
2020年4月25日 — Now associations in rails is a way to create methods that can be called on a database record to find its associated record. We could get a user ... https://stackoverflow.com Rails: has_many的參數
2018年4月26日 — has_many :article_categories, dependent: :destroy has_many :types, through: :article_categories, source: :category end. scope參數. 當想要在 ... https://medium.com railsactiverecordlibactive_recordassociations.rb at main
Ruby on Rails. Contribute to rails/rails development by creating an ... # [+:source_type+] # Specifies type of the source association used by #has_many ... https://github.com source option of has_onehas_many through of Rails
2011年1月8日 — Specifies the source association name used by has_many :through => :queries . Only use it if the name cannot be inferred from the association. https://stackoverflow.com |