Module: ActiveSupport::Callbacks::ClassMethods

Defined in:
lib/active_support/callbacks.rb

Instance Method Summary collapse

Instance Method Details

#define_callbacks(*callbacks) ⇒ Object 



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# File 'lib/active_support/callbacks.rb', line 205

def define_callbacks(*callbacks)
  callbacks.each do |callback|
    class_eval "      def self.\#{callback}(*methods, &block)\n        callbacks = CallbackChain.build(:\#{callback}, *methods, &block)\n        (@\#{callback}_callbacks ||= CallbackChain.new).concat callbacks\n      end\n\n      def self.\#{callback}_callback_chain\n        @\#{callback}_callbacks ||= CallbackChain.new\n\n        if superclass.respond_to?(:\#{callback}_callback_chain)\n          CallbackChain.new(superclass.\#{callback}_callback_chain + @\#{callback}_callbacks)\n        else\n          @\#{callback}_callbacks\n        end\n      end\n    end_eval\n  end\nend\n"