Rails - Jul 2006 - Problem starting push server in Jugganaut

Hi All,

Im playing around with Jugganaut but stuck at the first step.

Seems the jugganaut push server requires json (which I have installed)
but it cant find it.

Following the docs, I have installed json and then try to run the push
server.

jonathan $ ruby script/push_server 
script/push_server:37:in `require'': no such file to load -- json
(LoadError)
        from script/push_server:37

OK, so perhaps I didnt install json properly, so I try again.

jonathan $ sudo gem install json
Password:
Need to update 10 gems from http://gems.rubyforge.org
..........
complete
Successfully installed json-0.4.1
Installing ri documentation for json-0.4.1...

lib/json/editor.rb:977:50: '':'' not followed by identified or
operator
Installing RDoc documentation for json-0.4.1...

lib/json/editor.rb:977:50: '':'' not followed by identified or
operator


Seems to be installed this time. Try again to run the push server

jonathan $ ruby script/push_server
script/push_server:37:in `require'': no such file to load -- json
(LoadError)
        from script/push_server:37


Anyone any ideas as to what could be wrong?

Thanks

Jonathan


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>Hi All,
>Im playing around with Jugganaut but stuck at the first step.
>Seems the jugganaut push server requires json (which I have installed)
>but it cant find it.
...
>Anyone any ideas as to what could be wrong?
>Thanks
>Jonathan

Hi Jonathan,
I had the same problem, and fixed it!  Here''s how...
(I posted this fix on my blog as well:
http://galtzo.blogspot.com/2006/08/json-has-colon-problem.html)

The problem:
You install JSON, and try to run the juggernaut push server, and think
everything''s gonna be cool... but then:

[pboling@host my_app]$ sudo gem install json
Successfully installed json-0.4.1
Installing ri documentation for json-0.4.1...

lib/json/editor.rb:977:50: '':'' not followed by identified or
operator
Installing RDoc documentation for json-0.4.1...

lib/json/editor.rb:977:50: '':'' not followed by identified or
operator

And get more baffling errors...

[pboling@host my_app]$ ruby script/push_server
script/push_server:37:in `require'': no such file to load -- json
(LoadError)
        from script/push_server:37


So you fix them!

[pboling@host my_app]$ cd /usr/lib/ruby/gems/1.8/gems/
(Some systems may be /usr/local/lib... or something else)


All of your installed gems should be sitting here:

[pboling@host gems]$ ls
actionmailer-1.2.3   activerecord-1.14.3  json-0.4.1
rails-1.1.4          actionpack-1.12.3    activesupport-1.3.1
mysql-2.7            rake-0.7.1           sources-0.0.1
actionwebservice-1.1.4  fcgi-0.8.7        rubygems-update-0.9.0

[pboling@host gems]$ cd json-0.4.1/lib/json/


There''s the offending editor.rb file!

[pboling@host json]$ ls
Array.xpm  FalseClass.xpm  json.xpm  NilClass.xpm  String.xpm
editor.rb  Hash.xpm        Key.xpm   Numeric.xpm   TrueClass.xpm


Edit it and remove the offending colon:

[pboling@host json]$ sudo vi editor.rb +977

Change this:

        @treeview.signal_connect(:''cursor-changed'') do

to this (delete colon):

        @treeview.signal_connect(''cursor-changed'') do

and save... (:wq)


[pboling@host json]$ cd ../../


There''s the install file!

[pboling@host json-0.4.1]$ ls
bin      GPL         lib                  linecover.db  README  TODO
CHANGES  install.rb  linecover_config.rb  Rakefile      tests   VERSION


Run the install file:

[pboling@host json-0.4.1]$ sudo ruby install.rb


It will do this:

cd bin
install -c edit_json.rb /usr/bin
cd -
cd lib
install -c json.rb /usr/lib/site_ruby/1.8
mkdir -p /usr/lib/site_ruby/1.8/json
install -c json/editor.rb /usr/lib/site_ruby/1.8/json
install -c json/json.xpm /usr/lib/site_ruby/1.8/json
cd -


Then start your Juggernaut push_server:

[pboling@host igacc]$ ruby script/push_server
Starting server...
Server is on...
IP:     0.0.0.0
Port:   3100
Computer Name:  0.0.0.0
Allowed IP for rails:
Serving...


And you are now much more awesome than you were 2 minutes ago!

-- 
(**********************************************************
* Peter H. Boling
* Software Engineer - Legislative Services Agency
* Web Application Designer - PanEther, LLC
* email:      peter.boling@gmail.com
* blog:       http://galtzo.blogspot.com/
* languages:  English, Spanish, Portuguese
***********************************************************)