Return just the value of an xpath - Nokogiri Ruby

Return just the value of an xpath - Nokogiri Ruby

I'm using xpath to get some values on a website like this
auction_page = Nokogiri::HTML open(a, "User-Agent" => theagent)
auction_links = auction_page.xpath('//iframe[contains(@src, "near")]/@src')
Which returns what I need like this
#<Nokogiri::XML::Attr:0x3fcd7bef5730 name="src" value="http://thevalue.com">
I just want to get the value, not the value or anything else. How do I do
this?