[Zope] ZRTChat: Logged in users indicator

[Jim Washington]

Good question.

It's tough to know who or whether someone is actually there because
logouts are not enforced.  Any kind of non-time-based counting or
listing algorithm would end up with zombies really quick.

However, for what you seem to need,  you could compare the latest chat
item's bobobase_modification_time with the current ZopeTime().  Then you
could say, for example, that someone has posted in the last five minutes
or so.

I think that's how I would do it.  Let me know what you figure out.  I
may add a notifier like that into the next version.

-- Jim Washington

"Brendon Grunewald (70South)" wrote:
> 
> I would like to put an image or different text at several places in the
> site when ever there is at least one person logged into the ZRTChat
> chatroom. i.e. a light on the front page to indicate that there is a
> chat session presently underway in the chatroom.
> Question:
> How can I accomplish the following algorithm,
> <If logged in users exist>
>    display image or text a
> <else>
>    display image or text b
> <fi>
> 
> Basically I need to know how I can access a variable or other data type
> that will tell me whether there is anyone logged on when the page in
> question is requested. If no such variable exists, is there some other
> way of accomplishing this!
> 
> Thanks
> Brendon
> 
> --
> Brendon Grunewald
> http://www.70south.com
> mailto:brendon@70south.com