On Sun, 20 Jul 2003 12:28:55 +0200, [EMAIL PROTECTED] (Merlin) wrote:
>Hi there,
>
>I was searching on the net for a while on how to create dynamic newsfeeds
>from my web portal. Somehow I did not find what I was looking for.
>
>Can anybody give me a good start on how to write a newsfeed service which is
>dynamic? The goal is whenever a member publishes a story on the site, it
>should be included into the newsfeed.
>
>Thanx for any suggestions and help on this!
Two ways of doing it, basically.
First is a dynamic PHP page that goes though the last ten or whatever
updates and displays them as RSS (in much the same way you display a
"recent articles" page, except you output XML instead of HTML)
Second is to create the page as above whenever you add a new story and
then output it to a static file.
Output of RSS is fairly simple, start off with
<?PHP
header("content-type: text/xml")
?>
then build up the introductory data (I'm using a stripped down version
of my own feed as an example here):
<example>
<?xml version="1.0" encoding="utf-8"?>
<rss version="2.0"
xmlns:dc="http://purl.org/dc/elements/1.1/";>
<channel>
<title>Aquarionics</title>
<link>http://www.aquarionics.com</link>
<description></description>
<dc:language>en-gb</dc:language>
<dc:creator>Aquarion ([EMAIL PROTECTED])</dc:creator>
<dc:rights>Copyright 2003 Aquarion</dc:rights>
<dc:date>2003-07-20T11:55:00+0100</dc:date>
<admin:generatorAgent
rdf:resource="http://www.aquarionics.com/epistula/?v=2.0.2b"; />
<admin:errorReportsTo rdf:resource="mailto:[EMAIL PROTECTED]"/>
<sy:updatePeriod>daily</sy:updatePeriod>
<sy:updateFrequency>8</sy:updateFrequency>
<sy:updateBase>2000-01-01T12:00+00:00</sy:updateBase>
</example>
If it's a database, query for the last 10 items, then loop though them
and output the code:
<item>
<title>Journal - Aquarion and the Missing Domain</title>
<link>http://www.aquarionics.com/journal/2003/07/18/Aquarion_and_the_Missing_Domain</link>
<comments>http://www.aquarionics.com/journal/2003/07/18/Aquarion_and_the_Missing_Domain</comments>
<description>In which a server vanishes</description>
<guid
isPermaLink="true">http://www.aquarionics.com/journal/2003/07/18/Aquarion_and_the_Missing_Domain</guid>
<content:encoded><![CDATA[ <p>Okay, so in the confusion
of yesterday, I forgot to mention something. As of yesterday morning,
the entire gkhs.net network went <span class="caps">AWOL</span>
because for some reason neither of the people who have the domain got
any emails reminding us that it was due to expire.</p>
<p>This is why none of you have discovered that
spirit.gkhs.net isn’t working for <span class="caps">IRC</span>
atm. I’ll relaunch it when I get them back again (I’ve now
renewed the domain).</p>
]]></content:encoded>
<dc:date>2003-07-18T07:33:00+0100</dc:date>
<dc:subject>computing</dc:subject>
</item>
Finally, do the final closing tags:
</channel>
</rss>
and then run it though the Feed Validator at
http://feeds.archive.org/validator/ to make sure you haven't done
anything silly :-)
The specification for RSS2 (which will tell you - or help you - know
what goes in all the tags I used above) is at
http://blogs.law.harvard.edu/tech/rss
HTH
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