module ActiveRecord
  class Base
    class << self
      def find(*args)
        options = args.extract_options!
        validate_find_options(options)
        set_readonly_option!(options)

        case args.first
          when :first  then find_initial(options)
          when :last   then find_last(options)
          when :all    then find_every(options)
          when :random then find_random(options)
          else             find_from_ids(args, options)
        end
      end

      def random
        find(:first, :offset => rand(self.count))
      end

      private
        def find_random(options)
          results = find_every(options)
          results[rand(results.count)]
        end
    end
  end
end