an attempt to make a ranged named_proxy

gistfile1.rb

class ActiveRecord::Base
  named_scope :created, lambda { |date_range|
    case date_range
    when Range
      {:conditions => ["date(created_at) in (?)", date_range]}
    when Date
      {:conditions => ["date(created_at) = ?", date_range]}
    else
      {:conditions => '1=1'}
    end
  }
end