如何从抓取中访问 nokogiri 哈希数组中的某个值

这是我用于抓取的特定代码：

require 'singleton'
require 'open-uri'
class ProgramHighlights < ActiveRecord::Base
  self.table_name = 'program_highlights'
  include ActiveRecord::Singleton
  def fetch
    url = "http://kboo.fm/"
    doc = Nokogiri::HTML(open(url))
    titles = []
    program_title = doc.css(".title a").each do |title|
      titles.push(title)
    end
  end
end

当访问标题数组并通过它进行每个时，我的输出是：

(Element:0x5b40910 {
  name = "a",
  attributes = [
    #(Attr:0x5b8c310 {
      name = "href",
      value = "/content/thedeathsofothersthefateofciviliansinamericaswars"
      }),
    #(Attr:0x5b8c306 {
      name = "title",
      value = "The Deaths of Others: The Fate of Civilians in America's Wars"
    })],
   children = [
    #(Text "The Deaths of Others: The Fate of Civilians in America's Wars")]
  })

我特别想获得"价值"但是，执行以下操作不会拉动它：

titles[0].value
titles[0]["value"]
titles[0][value]

我不知道为什么我无法访问它，因为它似乎是一个哈希值。有什么方向的指示吗？我无法以简单的 JSON 格式获取数据，因此需要抓取。

要获取节点的属性值，可以使用 ['attribute_name']。例如：

require 'nokogiri'
html = %Q{
    <html>
        <a href="/content/thedeathsofothersthefateofciviliansinamericaswars" title="The Deaths of Others: The Fate of Civilians in America's Wars">
    </html>
}
doc = Nokogiri::HTML(html)
node = doc.at_css('a')
puts node['href']
#=> /content/thedeathsofothersthefateofciviliansinamericaswars
puts node['title']
#=> The Deaths of Others: The Fate of Civilians in America's Wars

假设你想要每个链接的标题属性值，你可以这样做：

program_title = doc.css(".title a").each do |link|
  titles.push(link['title'])
end

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