Model callback rails
Callbacks are methods that get called at certain moments of an object's life cycle. With callbacks it is possible to write code that will run whenever an Active Record object is created, saved, updated, deleted, validated, or loaded from the database.,若是 public 方法，有可能會在Model 外被呼叫，則違反了物件封裝的精神。 ... 整條回呼鏈（Callback Chain）被包在一筆交易（Transaction）裡。如果有任何的 ...
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 Model callback rails 相關參考資料
Active Record Callbacks - Rails Edge Guides - Ruby on Rails
Active Record Callbacks. This guide teaches you how to hook into the life cycle ... https://edgeguides.rubyonrails Active Record Callbacks — Ruby on Rails Guides
Callbacks are methods that get called at certain moments of an object's life cycle. With callbacks it is possible to write code that will run whenever an Active Record object is created, saved, up... https://guides.rubyonrails.org Active Record 回呼— Ruby on Rails 指南
若是 public 方法，有可能會在Model 外被呼叫，則違反了物件封裝的精神。 ... 整條回呼鏈（Callback Chain）被包在一筆交易（Transaction）裡。如果有任何的 ... https://rails.ruby.tw ActiveModel::Callbacks - Ruby on Rails API
Active Model Callbacks. Provides an interface for any class to have Active Record like callbacks. Like the Active Record methods, the callback chain is aborted ... https://api.rubyonrails.org ActiveRecord::Callbacks - Ruby on Rails API
Active Record Callbacks Callbacks are hooks into the life cycle of an Active ... they are defined, with the exception of callbacks defined as methods on the model, ... https://api.rubyonrails.org Model 的callback 整理(Ruby on Rails) « 捷姆斯
ActiveRecord Model Callback 什麼是callback ？ 這邊指的是，在Model的生命週期的節點，提供你插入想要執行的程式例如，我們可以在資料 ... http://james1239090-blog.logdo Model 驗證及回呼為你自己學Ruby on Rails | 高見龍
資料驗證（Validation）; 回呼（Callback） ... 資料驗證這件事在Rails 的MVC 三分天下的架構中，Controller 跟Model 都可以做這件事，要在View 裡寫JavaScript ... https://railsbook.tw |