Rails - Jan 2011 - After upgrading to Rails 3, getting errors in Rails 2 app

Hey all

After upgrading to Rails 3, when I try to run Rails 2 app, I get this:

script/server
Missing the Rails 2.3.8 gem. Please `gem install -v=2.3.8 rails`, update
your RAILS_GEM_VERSION setting in config/environment.rb for the Rails
version you do have installed, or comment out RAILS_GEM_VERSION to use
the latest version installed.
MacBook-Pro:MK JANUARY jmerlino$ rails -v
Rails 3.0.3


So I assume there''s going to be several issues like this.

According to the railscasts, he says use the rails_upgrade plugin to
address these issues.

Anyone agrees with this?

Thanks for response.

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On 2 January 2011 23:44, John Merlino
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:
> Hey all
>
> After upgrading to Rails 3, when I try to run Rails 2 app, I get this:
>
> script/server
> Missing the Rails 2.3.8 gem. Please `gem install -v=2.3.8 rails`, update
> your RAILS_GEM_VERSION setting in config/environment.rb for the Rails
> version you do have installed, or comment out RAILS_GEM_VERSION to use
> the latest version installed.
> MacBook-Pro:MK JANUARY jmerlino$ rails -v
> Rails 3.0.3
I think that if you want to run rails 2 and 3 apps on the same machine
the best way is to use rvm, which then allows completely independent
gem sets for each app.

Colin

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