[]=

# File actionpack/lib/action_dispatch/middleware/cookies.rb, line 447
      def []=(name, options)
        if options.is_a?(Hash)
          options.symbolize_keys!
        else
          options = { :value => options }
        end
        options[:value] = @encryptor.encrypt_and_sign(options[:value])

        raise CookieOverflow if options[:value].size > MAX_COOKIE_SIZE
        @parent_jar[name] = options
      end