callbacks.rb

class ActiveSupport::Callbacks::Callback
  def should_run_callback_with_log?(*args)
    should = should_run_callback_without_log?(*args)

    if should
      Rails.logger.info "++> \033[1;32m#{message(*args)}\033[0m"
    else
      Rails.logger.info "++> \033[1;37m#{message(*args)}\033[0m"
    end

    should
  end

  def message(*args)
    object = args.first

    msg = case method
      when Symbol
        [object.method(method).owner, method].join('::')
      when String
        method
      when Proc
        method.to_s
      when Method
        [metod.owner, method].join('::')
      else
        "unknown method #{method.inspect}"
    end

    "(#{object.class})--> #{msg}."
  end

  alias_method_chain :should_run_callback?, :log
end