如何在rails 3.2.8上升级到最新版本的ruby？

Question

I've been away from programming for a few months but I'm back now and surprised to rails already at version 3.2.8. I feel slightly rusty and forgot how to successfully upgrade my ruby on rails version to the latest.

I'm currently using version 3.2.3

Is there a standard way of upgrading? I remember the last time I upgraded I had to modify some lines in the gemfile. A google search didn't help so I would appreciate a solution from my favourite place thanks.

Kind regards

Answer 1

If you just want to install the latest rails gem

gem install rails -v 3.2.8

If it's a rails 3.2.3 app

1. Edit Gemfile , changing the line gem 'rails', '3.2.3' to gem 'rails', '3.2.8'
2. Run bundle update rails

(from this so question )

Answer 2

For each app you want to upgrade:

Gemfile

gem 'rails', '3.2.8'
# ...

Then on the command line:

$ bundle update rails