# File lib/active_support/callbacks.rb, line 205 def define_callbacks(*callbacks) callbacks.each do |callback| class_eval def self.#{callback}(*methods, &block) # def self.before_save(*methods, &block) callbacks = CallbackChain.build(:#{callback}, *methods, &block) # callbacks = CallbackChain.build(:before_save, *methods, &block) @#{callback}_callbacks ||= CallbackChain.new # @before_save_callbacks ||= CallbackChain.new @#{callback}_callbacks.concat callbacks # @before_save_callbacks.concat callbacks end # end # def self.#{callback}_callback_chain # def self.before_save_callback_chain @#{callback}_callbacks ||= CallbackChain.new # @before_save_callbacks ||= CallbackChain.new # if superclass.respond_to?(:#{callback}_callback_chain) # if superclass.respond_to?(:before_save_callback_chain) CallbackChain.new( # CallbackChain.new( superclass.#{callback}_callback_chain + # superclass.before_save_callback_chain + @#{callback}_callbacks # @before_save_callbacks ) # ) else # else @#{callback}_callbacks # @before_save_callbacks end # end end # end end end
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