Setting up a RSS Feed

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Kentico CMS allows you to publish content using a RSS 2.0 feed. The default installation contains a simple CMSPages\NewsRss.aspx page that shows how to build your own RSS feed. It works with news items, but you can modify the code so that it displays a different type of documents.

 

The following figure shows the code of the rss.aspx page:

 

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="RSS.aspx.cs"

   Inherits="RSSNews" %>

<%@ Register Assembly="CMS.Controls" Namespace="CMS.Controls"

   TagPrefix="cc1" %><?xml version="1.0" encoding="utf-8" ?>

<rss version="2.0">

<channel>

 <title>News RSS</title>

   <link><![CDATA[<%=HttpContext.Current.Request.Url.AbsoluteUri.Remove(HttpContext.Current.Request.Url.AbsoluteUri.Length - HttpContext.Current.Request.Url.PathAndQuery.Length) + HttpContext.Current.Request.ApplicationPath%>]]></link>

 <description>News RSS Feed</description>

 <cc1:cmsrepeater ID="NewsRepeater" runat="server" OrderBy="NewsReleaseDate DESC" ClassNames="cms.news"

  TransformationName="cms.news.rssitem" SelectedItemTransformationName="cms.news.rssitem"

  Path="/news/%"></cc1:cmsrepeater>  

</channel>

</rss>

 

As you can see, the page contains only RSS elements with dynamic code. The RSS items are rendered using a CMSRepeater control with appropriate transformation.

 

The code behind looks like this:

 

[C#]

 

protected void Page_Load(object sender, EventArgs e)

{

   Response.ContentType = "text/xml";  

}

 

This code changes the output content type to XML.

 

How to Create a RSS Feed for a Different Document Type

 

If you want to display articles instead of news in your RSS feed, you will need to follow these steps:

 

1.Create a new ASPX page called articles_rss.aspx.

 

2.Copy and paste all code from the rss.aspx file except for the <%@ Page %> directive.

 

3.Change the following properties of the CMSRepeater control:
- SelectNodesOrderBy="DocumentModifiedWhen DESC"
- SelectNodesClassName="cms.article"
TransformationName="cms.article.rssitem"
SelectedItemTransformationName="cms.article.rssitem"
SelectNodesPath="/%"
SelectNodesWhere=""

 

4.Add the same line of code as used in the rss.aspx.cs code behind file (Response.ContentType = "text/xml") to articles_rss.aspx.cs.

 

5.Create the trasformation cms.article.rssitem like this in Site Manager -> Development -> Document Types -> ... edit Article ... -> Transformations:

 

<item>

    <guid isPermaLink="true"><![CDATA[<%# GetAbsoluteUrl(GetDocumentUrl()) %>]]></guid>

    <title><![CDATA[<%# Eval("ArticleTitle") %>]]></title>

    <description><![CDATA[<%# Eval("ArticleText") %>]]></description>

    <pubDate><%# Convert.ToDateTime(Eval("DocumentModifiedWhen")).ToString("r") %></pubDate>

    <link><![CDATA[<%# GetAbsoluteUrl(GetDocumentUrl()) %>]]></link>    

</item>

 

This code renders the particular items.

 

Page url: http://devnet.kentico.com/docs/devguide/index.html?setting_up_an_rss_feed.htm