Josh Highland’s Blog

Its not secret, I love social networking, I cant get enough of it. I also love programming and anything internet related.

I’m not sure how I came across it, but a PHP based, Object Oriented RSS caching tool named SimplePie caught my attention.

Previously I had been using a tool called Last RSS, but I found that Last RSS could not handle ATOM feeds.

Digging into how SimplePie works, I found that I could merge several feeds together, sorted by post time, my first thought was to use this to aggregate and cache all the different music related news feeds that and going to add content to notpopular.com v2.5 (when ever I finish it). I started thinking about it a bit more and thought it would be cool to use SimplePie to mash together all of the different RSS feeds from the different social networks I am on.

It wasn’t that hard to use SimplePie and the various social networks to make something really cool.


//establish the feeds
$pownce = new SimplePie("$pownceRSS_url");
$flickr = new SimplePie("$flickrRSS_url");
$twitter = new SimplePie("$twitterRSS_url");
$digg = new SimplePie("$diggRSS_url");
$youtube = new SimplePie("$youtubeRSS_url");


//merge them all together!
$merged = SimplePie::merge_items(array($pownce, $flickr, $twitter, $digg, $youtube));


Then all you have to do is look over each item in $merged, and output the appropriate info you want.

You can see what I built over at www.JoshHighland.com

One thing I really found great was the API that was on the SimplePie site.

After I put this all together, I found out that there is a term for what I had just built. People are calling them “LifeStreams“, which is a very appropriate term. I thought I had invented something, but guess LifeStreaming is like fire or a spear, given enough time people all over the place will discover it on their own.

I encourage you do set up a LifeStream for yourself and post the URL in the comments below. It’s fun!

My LifeStream: www.JoshHighland.com

I have been working on a help documentation system at work.
There are roughly 50,000 HTML files to deal with (yes 50 thousand).
The html files have a pretty decent structure, but they are by no means XHTML.

I dont have access to a web development language like php, cfm, for asp or this project to insert
the site navigation, page headers and footers, So I decided to go with some sweet web 2.0 un obtrusive javascript.

to make life easier for myself, I had the authors of the help system insert a single line into the head of each HTML file.
The line was a call to a javascript file. That javascript then used the DOM to insert all the appropriate CSS and other JS files I needed to make the pages look clean, and do what I needed them to do.

Things looked great in FireFox. Life was good until I loaded the site into Internet Explorer.
My beautiful project looked like a pile of crap, no styles, no javascript, just a stupid javascript error.

IE isnt known for its script debugging (another reason to no use IE). It took me literally hours to track down the problem.

I was doing this for all the css files (4 of them)

	var tmpElm = document.createElement("style");
	tmpElm.setAttribute("type", "text/css");
	tmpElm.appendChild(document.createTextNode("/some/directory/sweetness.css);"));
	document.getElementsByTagName('head')[0].appendChild(tmpElm);

Its clean, simple unobtrusive javascript.
create a style element, add the right attribute to it, add value to the style tag, then append it to the page head.
straight forward stuff.

Like I said, FireFix had no problem with it. After doing tons of test, i realized that IE didnt like me appending a style tag to the head!
Then I found this:

IE won't allow document.createElement('style')
If you try to add style declarations in the head of a document, IE borks at the name 'style' - "unexpected call to method or property access".

http://www.quirksmode.org/bugreports/archives/2006/01/IE_wont_allow_documentcreateElementstyle.html

IE gets confused between the head element <style> and the object property .style!

So I spend all that time debugging my code, which was perfectly fine, because IE is retarded and doesnt know the difference between <style> and .style!
WTF!

I removed all that sweet un obtrusive code and used this instead:

	document.write("<style type="text/css">@import url(/some/directory/sweetness.css");

I hate using document.write() these days, but it works in both IE and FF now.
My life sucks some times.

I am a web developer by trade. I write a lot of ColdFusion code for my job, I write a lot of PHP in my spare time. Being involved in both the CF and PHP communities, I have seen an overwhelming number of tutorials for things like generating RSS feeds using PHP, but not too many geared towards CF developers.

Here is some quick and dirty code that I wrote using CF MX to generate an RSS feed using some data that I had stored in a MS SQL database.

Download the source code here