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Parsing a RSS Feed 8

Posted by Robby Russell Wed, 11 May 2005 21:44:00 GMT

A friend was asking me how they could easily read a RSS feed and display the last x items in their rails project. This was my quick and dirty response.


require 'rss/2.0'
require 'open-uri'

class RssfeedController < ApplicationController

  def index
    feed_url = 'http://www.planetrubyonrails.org/xml/rss'
    output = "<h1>My RSS Reader</h1>" 
    open(feed_url) do |http|
      response = http.read
      result = RSS::Parser.parse(response, false)
      output += "Feed Title: #{result.channel.title}<br />" 
      result.items.each_with_index do |item, i|
        output += "#{i+1}. #{item.title}<br />" if i &lt; 10  
      end  
    end
    render_text output
  end

end

Is there an easier way to do this with another RSS library? I figured that the simplest method would be to just use the standard library that comes with Ruby.

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  1. Avatar
    blah Sat, 03 Jun 2006 23:45:43 GMT

    blah blah blah. wanna buy some erection cream?

  2. Avatar
    Pascal Van Hecke Sun, 08 Oct 2006 13:46:26 GMT

    I found this googling for info on the simple-rss gem. Will try to write how I used it on http://ruby.vanhecke.info

  3. Avatar
    Patrick Crowley Wed, 28 Feb 2007 19:26:30 GMT

    Note: For this to work, you need to edit the last part of line 14. (It has an incorrectly encoded less-than sign between if i and 10.

  4. Avatar
    Baachus Thu, 26 Apr 2007 11:43:33 GMT

    Here’s a version you can pop in you lib and call from your pages… cheers

    
  require 'rss/2.0'
  require 'open-uri'

  class RssReader

    def parseFeed (url, length)
      feed_url = url
      output = "";
      open(feed_url) do |http|
        response = http.read
        result = RSS::Parser.parse(response, false)
        output = "<span class=\"feedTitle\">#{result.channel.title}</span><br /><ul>" 
        result.items.each_with_index do |item, i|
          output += "<li><a href=\"#{item.link}\">#{item.title}</a></li>" if ++i < length  
        end 
        output += "</ul>" 
      end
      return output
    end

  end
  5. Avatar
    Anlek Mon, 18 Jun 2007 19:25:37 GMT

    Wow, I’ve been looking for this all day! Thank you!

  6. Avatar
    arj Fri, 05 Oct 2007 01:11:33 GMT

    i’m the type of guy that likes these kind of posts

  7. Avatar
    HappyNoff Fri, 21 Dec 2007 11:53:54 GMT
    Just note that if you want to read RSS 1.0, you need to add 
    require 'rss/1.0.rb'
    it will work just like it… nothing else…
  8. Avatar
    HappyNoff Fri, 21 Dec 2007 11:54:58 GMT
    Sorry, only 
    require 'rss/1.0'
    without .rb …

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