Rubyforge gem problem

Problem:

starting the server and you get:

 can't activate rubyforge (= 0.4.5), already activated rubyforge-1.0.0] (Gem::Exception)

Solution:
remove old versions of rubyforge gem

jorrel@helen ~ $ sudo gem uninstall rubyforge

Select gem to uninstall:
1. rubyforge-0.4.4
2. rubyforge-0.4.5
3. rubyforge-1.0.0
4. All versions
> 1
Successfully uninstalled rubyforge-0.4.4
jorrel@helen ~ $ sudo gem uninstall rubyforge

Select gem to uninstall:
1. rubyforge-0.4.5
2. rubyforge-1.0.0
3. All versions
> 1
Successfully uninstalled rubyforge-0.4.5
jorrel@helen ~ $ gem list | grep rubyforge
rubyforge (1.0.0)

Undo uncommitted changes in git

It seems that 'git revert' does not work the way that 'svn revert' does (reverting all uncommitted changes). I don't know if this is the proper way, but I 'reverted' my changes using 'git stash':

git stash
git stash clear

Update:

git reset --hard

Ubuntu Hardy + Firefox + Firebug

The old firebug is not working for firefox 3 beta 5 in Ubuntu Hardy; and so firebug 1.1 from the official site.

Solution: get the 'firebug' package from apt. :)

mod_rails + edge rails

Based on a recent conversation at phusion passenger google group, there is a bug wherein mod_rails fails to start its spawner for an application that uses edge rails.

Basically, you'll get this error (complaining about a failed 'to_constant_name' somewhere):

  Framework that failed to load:
  Vendor directory: /path/to/vendor/rails
Error message:
  Anonymous modules have no name to be referenced by
Exception class:
  ArgumentError

More info about the bug can be found in the bug report filed by hongli


update: This seems to be fixed in edge rails + git passenger (though I havn't tried yet), as hongli's comment below says.

mod_rails + rails 2.0

I you encounter a "500 Internal Server Error" after setting up mod_rails in a recent (rails 2.0) application, you need to delete 'public/.htaccess'.

Detecting the googlebot

Detecting the googlebot as your site's visitor is easy by just checking user agent. Googlebot uses this user agent:

Googlebot/2.1 (+http://www.googlebot.com/bot.html)

And in the app, we can just check:

request.user_agent =~ /googlebot/i

Planned Music Purchases

Purchase albums:

and/or

once available and not too lazy to go to the mall.