如何使用Nokogiri从RSS XML feed访问<dc:creator>

Question

使用Nokogiri，我能够访问XML元素，如下所示：

feed = "https://www.coachesvoice.com/category/masterclass/feed/"

# Using HTTParty to get the the feed and save it as rss
rss = HTTParty.get(feed)

# Using Nokogiri to parse the returned rss feed and save it as doc
doc = Nokogiri::XML(rss)

doc.css('item').take(2).each do |item|

    # set title to the item's title element text

    title = item.css('title').text


end

但是当我试图访问<dc:creator>元素时，我得到了一个空的变量。

这不起作用：

  # set creator to the item's dc:creator element
        # creator = item.css('dc:creator').text

这也不是

# set creator to the item's dc:creator element
        # creator = item.css('dc_creator').text

任何帮助我弄清楚如何访问这个元素都会很有帮助。

Answer 1

creator = item.css("dc|creator").text

参考https://www.w3.org/TR/selectors-3/#attrnmsp