# Changing app from Rails 3 RC to final

**URL:** <https://www.ruby-forum.com/t/changing-app-from-rails-3-rc-to-final/195598>\
**Category:** Rails\
**Created:** [September 26, 2010, 9:46am UTC](https://www.ruby-forum.com/t/changing-app-from-rails-3-rc-to-final/195598 "2010-09-26T09:46:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![spncrgr](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c68b51/32.png) [@spncrgr](https://www.ruby-forum.com/u/spncrgr)\
**Post date:** [September 26, 2010, 9:46am UTC](https://www.ruby-forum.com/t/changing-app-from-rails-3-rc-to-final/195598/1 "2010-09-26T09:46:04Z")

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Hi,

I have a question that I feel should be really easy to figure out, but  
I’m very new to Rails and Googling hasn’t really produced anything of  
consequence.

I started an app using the first release candidate of Rails 3. Now  
that the final version is out I’d like to change the app over. Is it  
as simple as changing the gem specification in the Gemfile? I feel  
like there should be more to it, but have no idea.

Thanks!  
Spencer

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**Author:** ![spncrgr](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c68b51/32.png) [@spncrgr](https://www.ruby-forum.com/u/spncrgr)\
**Post date:** [September 27, 2010, 8:37am UTC](https://www.ruby-forum.com/t/changing-app-from-rails-3-rc-to-final/195598/2 "2010-09-27T08:37:23Z")

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it’s very easy

you can update your gems in your computer:  
su  
cd /  
gem update  
gem cleanup  
gem list (you will see something like this: actionmailer (3.0.0)…

in you project directory:  
vi Gemfile (delete the line with 3.0.0-RC)  
bundle update  
gem list

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<div class="post-metadata">

**Author:** ![spncrgr](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c68b51/32.png) [@spncrgr](https://www.ruby-forum.com/u/spncrgr)\
**Post date:** [September 27, 2010, 11:15am UTC](https://www.ruby-forum.com/t/changing-app-from-rails-3-rc-to-final/195598/3 "2010-09-27T11:15:40Z")

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If you’ve the newer Rails version already installed, its really as  
simple as that. If not install that and you’re all set to go.

-sunny  
[http://ezror.com](http://ezror.com)

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<div class="post-metadata">

**Author:** ![spncrgr](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c68b51/32.png) [@spncrgr](https://www.ruby-forum.com/u/spncrgr)\
**Post date:** [September 28, 2010, 3:42am UTC](https://www.ruby-forum.com/t/changing-app-from-rails-3-rc-to-final/195598/4 "2010-09-28T03:42:35Z")

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On Sep 27, 2:37 am, Solrac C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> vi Gemfile (delete the line with 3.0.0-RC)  
> bundle update  
> gem list
> 
> –  
> Posted viahttp://www.ruby-forum.com/.

Just got home and gave that a try…worked perfectly.

Thanks!  
Spencer