导轨 - AciveRecord使用方法：依赖=＆GT; ：销毁条件 [英] Rails - AciveRecord use :dependent => :destroy on condition

问题描述

什么将是最好的/干法破坏基于一个条件对象的所有家属。 ？

例如：

class Worker < ActiveRecord::Base
 has_many :jobs , :dependent => :destroy
 has_many :coworkers , :dependent => :destroy
 has_many :company_credit_cards, :dependent => :destroy
end 

状况会 的破坏：

if self.is_fired? 
 #Destroy dependants records
else
 # Do not Destroy records
end 

有没有办法使用PROC在：相关情况。 我发现摧毁个别家属的方法，但这是不干燥和灵活的进一步协会，

Is There a Way to use Proc in the :dependent condition. I have found the methods to destroy the dependents individually, but this is not DRY and flexible for further associations,

注：我已经决定了的例子..而不是实际的逻辑

Note: I have made up the example.. not an actual logic

推荐答案

没有。您应该删除：依赖=＆GT; ：摧毁并添加 after_destroy 回调，你可以写任何你想要的逻辑

No. You should remove :dependent => :destroy and add after_destroy callback where you can write any logic you want.

class Worker < ActiveRecord::Base
  has_many :jobs
  has_many :coworkers
  has_many :company_credit_cards
  after_destroy :cleanup

  private
  def cleanup
    if self.is_fired?
      self.jobs.destroy_all
      self.coworkers.destroy_all
      self.company_credit_cards.destroy_all
    end
  end
end 

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