Rails - Oct 2007 - Campfire like chat plugin?

I''ve got to write a little app at work for doctors and med students to
view a streaming video feed, and the users want the ability to have a
chat window. I''ve got everything else figured out, authentication, the
stream, etc. The chat feature is something I don''t really know where
to start on. It does not need to be nearly as fancy as Campfire. The
only "extra" is that the chats need to be logged transcripts can be
downloaded later. Does anyone know of a plugin that might do this? Or,
I''d love to hear of some ideas you may have.
Thanks.

--
Sterling Anderson
sterling_anderson [at] mac.com


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> The only "extra" is that the chats need to be logged transcripts
can be
> downloaded later. Does anyone know of a plugin that might do this? Or,
> I''d love to hear of some ideas you may have.

well.. i personally have not found very much in the way of chat 
plugins.. so i went through and wrote my own.  just to give you a heads 
up though, the most difficult part of my experience writing a chat app 
was to determine when to scroll to the bottom, and when to stay put. for 
example..  if you''re chatting with someone and you want to read 
something that was said a while ago, you would scroll up. if the other 
person sends another message while you''re scrolled up, you want it to 
stay there. But if you''re at the bottom, you want it to stay at the 
bottom.. (i hope that makes sense)..  here''s the javascript i wrote to 
accomplish this..

this first one will keep the scroll at the bottom if it''s at the
bottom,
or it will stay put if it''s not.

function moveToBottom()
{
  var div = document.getElementById(''chatbox'');
  h = div.scrollHeight;
  sh = div.scrollTop;
  st = div.offsetHeight;
  difference = h - sh;
  alt = st + 50
  if (difference > alt) {
  } else {
      div.scrollTop = h;
  }
}

this one will just force it to the bottom.. i use it when the page 
opens.

function forceToBottom()
{
  var div = document.getElementById(''chatbox'');
  h = div.scrollHeight;
  div.scrollTop = h;
}


hope that may shed some light on the subject.
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Good call.  That''s helpful.

On Oct 22, 11:45 am, Jon Druse
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> > The only "extra" is that the chats need to be logged
transcripts can be
> > downloaded later. Does anyone know of a plugin that might do this? Or,
> > I''d love to hear of some ideas you may have.
>
> well.. i personally have not found very much in the way ofchat
> plugins.. so i went through and wrote my own.  just to give you a heads
> up though, the most difficult part of my experience writing achatapp
> was to determine when to scroll to the bottom, and when to stay put. for
> example..  if you''re chatting with someone and you want to read
> something that was said a while ago, you would scroll up. if the other
> person sends another message while you''re scrolled up, you want it
to
> stay there. But if you''re at the bottom, you want it to stay at
the
> bottom.. (i hope that makes sense)..  here''s the javascript i
wrote to
> accomplish this..
>
> this first one will keep the scroll at the bottom if it''s at the
bottom,
> or it will stay put if it''s not.
>
> function moveToBottom()
> {
>   var div = document.getElementById(''chatbox'');
>   h = div.scrollHeight;
>   sh = div.scrollTop;
>   st = div.offsetHeight;
>   difference = h - sh;
>   alt = st + 50
>   if (difference > alt) {
>   } else {
>       div.scrollTop = h;
>   }
>
> }
>
> this one will just force it to the bottom.. i use it when the page
> opens.
>
> function forceToBottom()
> {
>   var div = document.getElementById(''chatbox'');
>   h = div.scrollHeight;
>   div.scrollTop = h;
>
> }
>
> hope that may shed some light on the subject.
> --
> Posted viahttp://www.ruby-forum.com/.

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> Does anyone know of a plugin that might do this? Or,
> I''d love to hear of some ideas you may have.
Lingr (http://www.lingr.com) has a completely open API that is free for 
non-commercial use.  We log everything that is uttered in a room, and 
you can access the transcripts are available on the website and through 
the API.

On the wiki you''ll also find lingr.js, a fairly complete client-side 
implementation into which you just plug your API key, and register some 
callbacks, and you''re good to go.

The developer''s wiki is at http://wiki.lingr.com.  Drop us a line if
you
need help or want more information than you find on the wiki.

- Danny
http://www.lingr.com/help/about#danny
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Thanks, unfortunately this is for a medical school and there is the
slightest chance that HIPAA type info could be chatted over. Yes, the
docs know they shouldn''t but they talk about patients via unencrypted
email when they aren''t still too. So having chats stored on an
external site is a no go.

On Nov 15, 1:56 am, Danny Burkes
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> > Does anyone know of a plugin that might do this? Or,
> > I''d love to hear of some ideas you may have.
>
> Lingr (http://www.lingr.com) has a completely open API that is free for
> non-commercial use.  We log everything that is uttered in a room, and
> you can access the transcripts are available on the website and through
> the API.
>
> On the wiki you''ll also find lingr.js, a fairly complete
client-side
> implementation into which you just plug your API key, and register some
> callbacks, and you''re good to go.
>
> The developer''s wiki is athttp://wiki.lingr.com.  Drop us a line
if you
> need help or want more information than you find on the wiki.
>
> - Dannyhttp://www.lingr.com/help/about#danny
> --
> Posted viahttp://www.ruby-forum.com/.
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