require 'active_record' module FayeRails class Controller # Define callbacks into any ORM model. module ObserverFactory # Create def self.define(klass, method_name, &block) # Make a name for the callback module klass_callbacks_name = "#{klass.name}Callbacks" # Load the callback module if exists unless (klass_callbacks = ObserverFactory.observer(klass_callbacks_name)) # Define callback module if one does not exist klass_callbacks = Object.const_set(klass_callbacks_name, Module.new) end # Add the method to the observer klass_callbacks.instance_eval do define_method(method_name, &block) end # Bind model callback klass.send(method_name, klass_callbacks.extend(klass_callbacks)) end def self.observer(module_name) ref = Module.const_get(module_name) return ref if ref.is_a?(Module) nil rescue nil end end end end