rails dependent
class Customer < ActiveRecord::Base has_many :orders, dependent: :destroy end class Order < ActiveRecord::Base belongs_to :customer end. 改寫成這樣後， ... ,Note that these are implemented as callbacks, and Rails executes callbacks in order. Therefore, other similar callbacks may affect the :dependent behavior, and ...
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 rails dependent 相關參考資料
Active Record Associations — Ruby on Rails Guides
In Rails, an association is a connection between two Active Record models. ... class Author < ApplicationRecord has_many :books, dependent: :destroy end ... https://guides.rubyonrails.org Active Record 關聯— Ruby on Rails 指南
class Customer < ActiveRecord::Base has_many :orders, dependent: :destroy end class Order < ActiveRecord::Base belongs_to :customer end. 改寫成這樣後， ... https://rails.ruby.tw has_many (ActiveRecord::Associations::ClassMethods ...
Note that these are implemented as callbacks, and Rails executes callbacks in order. Therefore, other similar callbacks may affect the :dependent behavior, and ... https://apidock.com How to use dependent: :destroy in rails? - Stack Overflow
2015年4月10日 — Add cascading delete to your EmpGroup model: class EmpGroup < ActiveRecord::Base has_many :emp_group_members, :dependent ... https://stackoverflow.com Module ActiveRecord::Associations::ClassMethods - Rails API
Note that :dependent is implemented using Rails' callback system, which works by processing callbacks in order. Therefore, other callbacks declared either ... https://api.rubyonrails.org Rails - AciveRecord use :dependent => :destroy on condition ...
No. You should remove :dependent => :destroy and add after_destroy callback where you can write any logic you want. class Worker < ActiveRecord::Base ... https://stackoverflow.com Rails :dependent => destroy with conditions - Stack Overflow
2018年7月5日 — You don't want to use :dependent => :destroy here, but rather the before_destroy callback like so: #leash.rb before_destroy :destroy_dog def ... https://stackoverflow.com Rails dependent which options are possible? - Stack Overflow
Docs are available here. Looks like the following options are supported: :destroy - causes all the associated objects to also be destroyed. :delete_all - causes all ... https://stackoverflow.com Ruby on Rails 實戰聖經| ActiveRecord - 資料表關聯
dependent. 可以設定當物件刪除時，怎麼處理依賴它的資料，例如： class Event < ApplicationRecord has_many :attendees, :dependent => :destroy end. https://ihower.tw The ActiveRecord :dependent Option | by Benjamin Krigel ...
2018年8月27日 — In Ruby on Rails, objects are saved through the ActiveRecord database management system. Classes of objects are represented by individual ... https://blog.techatpower.com |