From: Mike Dalessio <mike.dalessio@...>
Date: 2010-08-09T11:49:43+09:00
Subject: Re: Nokogiri help

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On Sun, Aug 8, 2010 at 11:35 AM, R.. Kumar 1.9.1 OSX <sentinel1879@gmail.com
> wrote:

> I am trying to access some particular children in a document. I find
> myself having to loop (several levels) through children checking name ==
> "xxx". I am wondering whething there is more direct way of getting the
> same. Here's a simple sample.
>
> I am trying to get the href of a class called prevnext (on browser it is
> "next").
>
> require 'nokogiri'
> require 'open-uri'
>
>
> doc = Nokogiri::HTML(open('http://www.reddit.com/r/programming/'))
> nextlink = nil
> doc.css('p.nextprev').each do |link|
>  link.children.each do |child|
>    if child.name == "a"
>      nextlink =  child.attributes["href"].value
>    end
>  end
> end
> puts nextlink
>
> --------
> Can i not access a.href more directly in the doc.css line itself ?
> thx, rahul
>

For advanced usage like capturing attribute values in a Nokogiri search, you
should use Node#xpath:

    doc = Nokogiri::HTML(open('http://www.reddit.com/r/programming/'))
    puts doc.xpath("//p[@class='nextprev']/a/@href").inspect
    # => [#<Nokogiri::XML::Attr:0x3fa59149a0cc name="href" value="
http://www.reddit.com/r/programming/?count=25&after=t3_cygpc">]




> --
> Posted via http://www.ruby-forum.com/.
>
>

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