# Issue with upgrading to 2.0 on Leopard? Or something else? **URL:** \ **Category:** Rails\ **Created:** [December 14, 2007, 3:19pm UTC](https://www.ruby-forum.com/t/issue-with-upgrading-to-2-0-on-leopard-or-something-else/123161 "2007-12-14T15:19:14Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![shirt](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a87d85/32.png) [@shirt](https://www.ruby-forum.com/u/shirt)\ **Post date:** [December 14, 2007, 3:19pm UTC](https://www.ruby-forum.com/t/issue-with-upgrading-to-2-0-on-leopard-or-something-else/123161/1 "2007-12-14T15:19:14Z")
Sorry if this has been covered, but I finally decided to upgrade to Rails 2.0 (running Leopard and previously at rails 1.2.6) so I could start using some of the great new features. I ran the usual “sudo gem install rails --include-dependencies” to upgrade and now my development environment is all out of whack. I suspected MySQL, but I’ve already made sure I was using the latest MySQL gem and my MySQL server is running fine. Is there something I’m missing? Here’s the error (and sorry if this is a n00b question - I’m just starting out with rails, but I love it!) I get when I load localhost:3000 into my browser and try to show the info about the application’s environment: Mysql::Error in Rails/infoController#properties And here’s the trace: /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active\_record/ connection\_adapters/mysql\_adapter.rb:471:in `real_connect' /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active_record/ connection_adapters/mysql_adapter.rb:471:in`connect’ /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active\_record/ connection\_adapters/mysql\_adapter.rb:165:in `initialize' /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active_record/ connection_adapters/mysql_adapter.rb:88:in`new’ /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active\_record/ connection\_adapters/mysql\_adapter.rb:88:in `mysql_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active_record/ connection_adapters/abstract/connection_specification.rb:291:in`send’ /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active\_record/ connection\_adapters/abstract/connection\_specification.rb:291:in `connection=' /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active_record/ connection_adapters/abstract/connection_specification.rb:259:in`retrieve\_connection’ /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active\_record/ connection\_adapters/abstract/connection\_specification.rb:78:in `connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active_record/ query_cache.rb:8:in`cache’ /Library/Ruby/Gems/1.8/gems/actionpack-2.0.1/lib/action\_controller/ caching.rb:677:in `perform_action' /Library/Ruby/Gems/1.8/gems/actionpack-2.0.1/lib/action_controller/ base.rb:524:in`send’ /Library/Ruby/Gems/1.8/gems/actionpack-2.0.1/lib/action\_controller/ base.rb:524:in `process_without_filters' /Library/Ruby/Gems/1.8/gems/actionpack-2.0.1/lib/action_controller/ filters.rb:685:in`process\_without\_session\_management\_support’ /Library/Ruby/Gems/1.8/gems/actionpack-2.0.1/lib/action\_controller/ session\_management.rb:123:in `process' /Library/Ruby/Gems/1.8/gems/actionpack-2.0.1/lib/action_controller/ base.rb:388:in`process’ /Library/Ruby/Gems/1.8/gems/activesupport-2.0.1/lib/active\_support/ dependencies.rb:489:in `load' /Library/Ruby/Gems/1.8/gems/activesupport-2.0.1/lib/active_support/ dependencies.rb:489:in`load’ /Library/Ruby/Gems/1.8/gems/activesupport-2.0.1/lib/active\_support/ dependencies.rb:342:in `new_constants_in' /Library/Ruby/Gems/1.8/gems/activesupport-2.0.1/lib/active_support/ dependencies.rb:489:in`load’ /Library/Ruby/Gems/1.8/gems/rails-2.0.1/lib/commands/servers/ mongrel.rb:64 /Library/Ruby/Gems/1.8/gems/activesupport-2.0.1/lib/active\_support/ dependencies.rb:496:in `require' /Library/Ruby/Gems/1.8/gems/activesupport-2.0.1/lib/active_support/ dependencies.rb:342:in`new\_constants\_in’ /Library/Ruby/Gems/1.8/gems/activesupport-2.0.1/lib/active\_support/ dependencies.rb:496:in `require’ /Library/Ruby/Gems/1.8/gems/rails-2.0.1/lib/commands/server.rb:39 Any help would be greatly appreciated! Thanks! ---
**Author:** ![shirt](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a87d85/32.png) [@shirt](https://www.ruby-forum.com/u/shirt)\ **Post date:** [December 14, 2007, 4:03pm UTC](https://www.ruby-forum.com/t/issue-with-upgrading-to-2-0-on-leopard-or-something-else/123161/2 "2007-12-14T16:03:14Z")
Why are you using ‘gem install’ when you want to update a gem? Run ‘gem help commands’ or ‘gem help update’. Try removing the gem if the update fails and reinstall. ---
**Author:** ![shirt](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a87d85/32.png) [@shirt](https://www.ruby-forum.com/u/shirt)\ **Post date:** [December 14, 2007, 4:10pm UTC](https://www.ruby-forum.com/t/issue-with-upgrading-to-2-0-on-leopard-or-something-else/123161/3 "2007-12-14T16:10:15Z")
Good point. I wasn’t really thinking (it was early in the morning) and I just went by the instructions on the [rubyonrails.org](http://rubyonrails.org) blog post to run gem install… Should I just delete the “rails-2.0.1” gem or all the related “activerecord” “actionmailer” and anything else labeled 2.0.1? Thanks for the help! ---
**Author:** ![shirt](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a87d85/32.png) [@shirt](https://www.ruby-forum.com/u/shirt)\ **Post date:** [December 15, 2007, 11:04pm UTC](https://www.ruby-forum.com/t/issue-with-upgrading-to-2-0-on-leopard-or-something-else/123161/4 "2007-12-15T23:04:55Z")
On Dec 14, 2007, at 7:02 AM, harm wrote: > Why are you using ‘gem install’ when you want to update a gem? I used the install command, following the instructions at > **[Rails 2.0: It's done!](https://rubyonrails.org/2007/12/7/rails-2-0-it-s-done)** > > Rails 2.0 is finally finished after about a year in the making. This is a fantastic release that’s absolutely stuffed with great new features, loads of fixes, and an incredible amount of polish. We’ve even taken a fair bit of cruft out to make the... and it worked just fine. Because I first updated to gem 0.9.x I was given the “tip” that you no longer need to “-y” on the install to get all the dependencies, so on subsequent upgrades (other machines) I’ve taken that to heart and dropped it. Several install/upgrade processes have gone flawlessly. So how do I upgrade? If you want to move your application to Rails 2.0, you should first move it to Rails 1.2.6. That’ll include deprecation warnings for most everything we yanked out in 2.0. So if your application runs fine on 1.2.6 with no deprecation warnings, there’s a good chance that it’ll run straight up on 2.0. Of course, if you’re using, say, pagination, you’ll need to install the classic\_pagination plugin. If you’re using Oracle, you’ll need to install the activerecord-oracle-adapter gem. And so on and so forth for all the extractions. So how do I install? To install through gems, do: gem install rails -y …if you’re having trouble with that (gem not found), just grab gems from our own repository in the meanwhile: gem install rails -y --source [http://gems.rubyonrails.org](http://gems.rubyonrails.org)