Can't work with more recent gems

I'm working on a university project and my teacher set up the server for it, but after installing Ruby 1.9.x we had to return to Ruby 1.开发者_JAVA百科8.x, because of the Ruby 1.9/Rails 2.3.4 problem.

Now, every time I build a Rails app, it's always using Rails 2.2.3 gems.

I've changed the environment.rb (RAILS_GEM_VERSION = '2.3.4' ...), but it's not working.

The teacher show me "ruby env" output and looks like it's point to Ruby 1.8 folders.

The "Welcome aboard" page is showing:

Ruby version 1.8.7 (x86_64-linux)

RubyGems version 1.3.4

Rails version 2.2.3

Active Record version 2.2.3

Action Pack version 2.2.3

Active Resource version 2.2.3

Action Mailer version 2.2.3

Active Support version 2.2.3

Edge Rails revision unknown

The "gem list" output is:

*** LOCAL GEMS ***

actionmailer (2.3.4, 2.2.3)

actionpack (2.3.4, 2.2.3)

activerecord (2.3.4, 2.2.3)

activeresource (2.3.4, 2.2.3)

activesupport (2.3.4, 2.2.3)

builder (2.1.2)

fastthread (1.0.7)

mysql (2.8.1)

passenger (2.2.5)

rack (1.0.1, 1.0.0)

rails (2.3.4, 2.2.3)

rake (0.8.7)

RedCloth (4.2.2)

test-unit (2.0.5)

xml-simple (1.0.12)

Also, the teacher installed the mysql gem but I think it showed that it wasn't necessary or was deprecated, but the mysql is working.

Anyone knows what could be problem for not getting Rails 2.3.4 gems to work?

Thanks

Maybe you have multiple versions of ruby 1.8 installed? Run these commands:

which ruby
which gem
ruby -v
gem env

Make sure the ruby version being used by gem is the same as you are using on the command-line.

$ which ruby
/usr/bin/ruby

$ which gem
/usr/bin/gem

$ ruby -v
ruby 1.8.7 (2009-06-12 patchlevel 174) [x86_64-linux]

$ gem env
RubyGems Environment:
- RUBYGEMS VERSION: 1.3.4
- RUBY VERSION: 1.8.7 (2009-06-12 patchlevel 174) [x86_64-linux]
- INSTALLATION DIRECTORY: /var/lib/gems/1.8/
- RUBY EXECUTABLE: /usr/bin/ruby1.8
- EXECUTABLE DIRECTORY: /var/lib/gems/1.8/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-linux
- GEM PATHS:
- /var/lib/gems/1.8/
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- http://gems.rubyforge.org/

Still not working...is there any paths wrong?