Changing href attributes with nokogiri and ruby on rails

Question

I Have a HTML document with links links, for exemple:

  
   

     
teste         


        

Answer 1

If you choose to use Nokogiri, I think this should work:

require 'cgi'
require 'rubygems' rescue nil
require 'nokogiri'

file_path = "your_page.html"
doc = Nokogiri::HTML(open(file_path))
doc.css("a").each do |link|
  link.attributes["href"].value = "http://myproxy.com/?url=#{CGI.escape link.attributes["href"].value}"
end
doc.write_to(open(file_path, 'w'))

If I'm not mistaken rails loads REXML up by default, depending on what you're trying to do you could use this also.

Answer 2

Here is what I did for replacing images src attributes:

      doc = Nokogiri::HTML(html)
       doc.xpath("//img").each do |img|
         img.attributes["src"].value = Absolute_asset_path(img.attributes["src"].value)
      end
      doc.to_html                  // simply use .to_html to re-convert to html