小编Der*_*don的帖子

我想写一点"Deprecate-It"lib并且经常使用"method_added"回调.但是现在我注意到,当包含模块时,不会触发此回调.

是否存在任何回调或变通办法,以便在将某些事物包括在内时通知"Foobar"课程？

小演示演示:

# Including Moduls won't trigger method_added callback

module InvisibleMethod
  def invisible
    "You won't get a callback from me"
  end
end

class Foobar
  def self.method_added(m)
    puts "InstanceMethod: '#{m}' added to '#{self}'"
  end

  def visible
    "You will get a callback from me"
  end

  include InvisibleMethod
end

[:invisible, :visible, :wont_exist].each do |meth|
  puts "#{meth}: #{Foobar.public_method_defined? meth}"
end

这就是结果:

InstanceMethod: 'visible' added to 'Foobar'
invisible: true
visible: true
wont_exist: false

附加信息:

我真的需要使用像method_added这样的钩子.

ActiveModel通过匿名模块在运行时将class_instance_methods添加到Class.