Comments on: A cool chat example created with Ruby On Rails and Juggernaut

By: Urubatan

Urubatan — Mon, 10 Nov 2008 11:18:41 +0000

Thanks for the feedback, I’ll update the tutorial with the newer versions of Rails and Juggernaut.

By: shalmali

shalmali — Mon, 10 Nov 2008 10:18:12 +0000

Hello,

I used this tutorial to create chat application with juggernaut in rails. But I faced many problems. This is might be because of the new code of the plugin juggernaut. Because when I installed plugin, i got juggernaut_hosts.yml file in the config folder, instead of juggernaut.yml.

Then I got error on the line

in view, which i changed to simply,
, and it worked.

Then I got error on methods like,
add_channel, send_to etc. which were not there in the /lib/juggernaut.rb file.

So I request you to kindly update your example with the new code in the plugin. So that it will be helpful to others also.

Thanks a lot,
Shalmali

By: leomayleomay

leomayleomay — Thu, 10 Jul 2008 01:59:12 +0000

Great tutorial.

One thing I don’t get is I even don’t have one juggernaut.yml under my config/ directory, only a file named juggernaut_hosts.yml, do I need to create my own by juggernaut -c juggernaut.yml, but seems it didn’t have the attribute you mentioned in the tutorial, would you please help? Thank you.

#gem list | grep juggernaut
juggernaut (0.5.4)

#gem list | grep eventmachine
eventmachine (0.12.0)

#gem list | grep json
json (1.1.2)

By: Migue

Migue — Thu, 08 May 2008 13:00:33 +0000

Hi, listen_to_juggernaut_channels dont exist, in last version i have done this:
[’chat’],:client_id=>session.session_id) %>

but dont works that:

@users = OnlineUser.find(:all, :conditions => [”online = true and id != ?”, @user.id])
if @users.size >0
data = render_to_string(:update) do |page|
@users.each {|u|
page.insert_html :bottom, :users_list, %Q{#{u.username}}
}
end
#send the javascript only to the new user
Juggernaut.send_to(@user.session_id, data)

Dont send to client list users. Anyone know why? Ty

By: Urubatan

Urubatan — Wed, 31 Oct 2007 17:24:04 +0000

Mike, I had a similar problem, and it solved reinstaling the flash player, do not know why yet.
After the login the users list was populated? try using two browser windows to test it.
if it is not populated, try passing the :width and :height to the juggernaut listener, and using firebug to monitor the javascript calls.
I’ll try to upload the complete application as a zip file to the blog tomorow.

Matthijs, the :generic is correct, the idea is add the chat channel to the user connection only after the login.

By: Matthijs Langenberg

Matthijs Langenberg — Wed, 31 Oct 2007 15:48:23 +0000

listen_to_juggernaut_channels [:generic],session.session_id
=>
listen_to_juggernaut_channels [:chat],session.session_id

By: Matthijs Langenberg

Matthijs Langenberg — Wed, 31 Oct 2007 15:47:45 +0000

@Mike, change:

in /chat/index.rhtml.

By: Mike

Mike — Wed, 31 Oct 2007 15:01:00 +0000

Nice tutorial, thanks, this looks very interesting. I followed the instructions exactly, however when I try to login, script/push_server just returns:

Connection established
Starting to parse line buffer
nope, didn’t dispatch request
Connection closed
Starting to parse request
Line buffer: [{”broadcast”:1, “channels”:”chat” …
Broadcasting dHj5…………
No such channel: chat

By: accutane class action » A cool chat example created with Ruby On Rails and Juggernaut

Sun, 28 Oct 2007 16:57:52 +0000

[…] RSS Feed wrote an interesting post today onHere’s a quick excerptclass ChatController < ApplicationController #this method does not need to exist, but I like to see it here, it only needs to render the index.rhtml view def index end def login #creates a new OnlineUser record, this is used to store … […]

By: Max

Max — Fri, 26 Oct 2007 21:13:53 +0000

Urubatan,

Please post the files in a zip file. I tried your suggestions, but when I try to login, it doesn’t seem to do anything.

Thanks,
Max