module Gattica
  module HashExtensions

    def to_query
      require 'cgi' unless defined?(CGI) && defined?(CGI::escape)
      self.collect do |key, value|
        "#{CGI.escape(key.to_s)}=#{CGI.escape(value.to_s)}"
      end.sort * '&'
    end

    def key
      self.keys.first if self.length == 1
    end

    def value
      self.values.first if self.length == 1
    end

  end
end