gistfile1.txt

require 'timecop'

module ActiveRecordDetectTimeInScopes
  extend ActiveSupport::Concern

  module ClassMethods
    def scope(*args)
      scope_caller = caller
      Timecop.travel(Time.now) do
        Timecop.top_stack_item.define_singleton_method :time do
          warn "WARNING: You have a scope with Time evaluated immediately in its args. " +
            "You might want to use lambda.\n" +
            Rails.backtrace_cleaner.clean(scope_caller).map { |trace| "\t#{trace}" }.join("\n")
          super()
        end
        super
      end
    end
  end
end

ActiveRecord::Base.send(:include, ActiveRecordDetectTimeInScopes)

Crap it won't work - needs to hook before the scope args are evaluated!