AJAX Who's Online

First off, this is my first modification. It's tiny, it's obvious, but I'm proud of it. I have Zero Tolerance to thank, he did give me some hints and tips.

Description:
This only refreshes the names of the users in the index page of the forums. Not the "currently online" number of users. It could say currently 4 users online, and there's a huge list of usernames.
I don't really see a need of a picture since there's no visual change. It only calls the names of the users currently online and removes them if they're offline without the need of refreshing the index page of the forums.

Edits:
1 Template to edit (FORUMHOME)
1 File to edit (index.php)

First the File Edit:
Open your index.php file in your forum directory.
Find:

// ### ALL DONE! SPIT OUT THE HTML AND LET'S GET OUTTA HERE... ###

Above add:

if ($_GET['do'] == 'online')
{
	echo $activeusers;
	exit;
}

Save, close, then upload index.php file to your forum directory.

Next, open your FORUMHOME template.
Find:

			<div class="smallfont">
				<div style="white-space: nowrap"><phrase 1="$recordusers" 2="$recorddate" 3="$recordtime">$vbphrase[most_users_ever_online_was_x_y_at_z]</phrase>

Above that, add:

<script type='text/javascript'>
<!--
function requestWhoOnline()
{
	doReqOnline = new vB_AJAX_Handler(true)
	doReqOnline.onreadystatechange(ReqOnlineDone)
	doReqOnline.send('index.php?do=online')
}
function ReqOnlineDone()
{
	if (doReqOnline.handler.readyState == 4 && doReqOnline.handler.status == 200)
	{
		fetch_object('whoisonline').innerHTML = doReqOnline.handler.responseText
		setTimeout("requestWhoOnline()", 60000)
	}
}
setTimeout("requestWhoOnline()", 20000)
-->
</script>

Now Find:

<div>$activeusers</div>

Replace with:

<div id="whoisonline">$activeusers</div>

====================

Since this is my first mod, I'd back up the files. Forgive me if this hack has already been done. I made a strict search and found no such thing. I decided to try to do it, and voila! Go me.

[Snake]

Bump!

[Lalib]

i dont see screenshot

[talenak]

I thought ajax reduced server load? Someone told me that, and I know nothing about anything to know better if they were wrong. Anyone mind clearing up my confusion?

[ragtek]

its diffucult to say
sometimes it reduces the serverload ( for things not everytime happening, like registration => username check=> so you know after you write your name in if the name is free or not, it it wouldnt be so, you have to write all information, send the whole form to the next site where it will be checked

on the other site in this example the part is reloaded all the time; its the same as you click f5 for reload the site

[Lea Verou]

Originally Posted by ragtek

its the same as you click f5 for reload the site

Of course its not. If you reload the whole page, a lot more queries get executed than the one for the online users.

Perhaps you could add a refresh button so that it doesn't reload for those that don't need it as well?

[ragtek]

yes, but you reload something!

but how often do you realy make this?
and here this part is automaticaly called every 60000 milliseconds


and second thing for this hack:
theres no real fileedit needed!

at the position where the code is added into the index.php there is a hook

($hook = vBulletinHook::fetch_hook('forumhome_complete')) ? eval($hook) : false;

[talenak]

Originally Posted by ragtek

sometimes it reduces the serverload

Thanks! Between you and Michelle I finally "get" it.

[Feckie (Roger)]

This as stopped working on 3-6-8_Patch_Level_1

[Feckie (Roger)]

Bump.

Anyone know why this does not work on 3.68, when it worked on 3.67

[Feckie (Roger)]

Bump again