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Add rails:update to the upgrading guides

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Mauro George 2014-06-19 11:22:40 -03:00
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guides/source/upgrading_ruby_on_rails.md
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@ -22,6 +22,29 @@ Rails generally stays close to the latest released Ruby version when it's releas
TIP: Ruby 1.8.7 p248 and p249 have marshaling bugs that crash Rails. Ruby Enterprise Edition has these fixed since the release of 1.8.7-2010.02. On the 1.9 front, Ruby 1.9.1 is not usable because it outright segfaults, so if you want to use 1.9.x, jump straight to 1.9.3 for smooth sailing.
### The Rake Task
Rails provides the `rails:update` rake task. After updating the Rails version
in the Gemfile, run this rake task.
This will help you with the creation of new files and changes of old files in a
interactive session.
```bash
$ rake rails:update
identical config/boot.rb
exist config
conflict config/routes.rb
Overwrite /myapp/config/routes.rb? (enter "h" for help) [Ynaqdh]
force config/routes.rb
conflict config/application.rb
Overwrite /myapp/config/application.rb? (enter "h" for help) [Ynaqdh]
force config/application.rb
conflict config/environment.rb
...
```
Don't forget to review the difference, to see if there were any unexpected changes.
Upgrading from Rails 4.1 to Rails 4.2
-------------------------------------