Question

我正在使用Rails 3.1.0，我想知道是否可以“同等”地处理after_save和after_destroy回调。也就是说，我需要为after_save和after_destroy回调运行相同的方法。

此时我必须单独处理这些回调，即使这些回调达到同样的目的：

after_save do |record|
  # Make a thing
end

after_destroy do |record|
  # Make the same thing as in the 'after_save' callback
end

那么，有一种方法可以同等地处理after_save和after_destroy吗？

Answer 1

而不是阻止将after_save和after_destroy模型的方法名称作为符号。

class ModelName < AR
  after_save :same_callback_method
  after_destroy :same_callback_method

  def same_callback_method
    # do the same for both callbacks
  end
end

Answer 2

class Foo < ActiveRecord::Base
  after_save :my_callback
  after_destroy :my_callback

  private
  def my_callback
    #Do stuff
  end
end

Answer 3

要在保存和销毁后执行相同的回调，您可以使用after_commit

after_commit do |record|
  # Is called after creating, updating, and destroying.
end

http://apidock.com/rails/ActiveRecord/Transactions/ClassMethods/after_commit

有一种方法可以同样处理`after_save`和`after_destroy`“吗？

3 个答案: