Re: Upgrading to Rails 3

Rails
1

Hi All,

Re: Upgrading to Rails 3

I am working on a rails application I need to upgrade to the latest
version
of Ruby and Ruby on Rails.

It is currently using:

Ruby version 1.8.7 and
Ruby on Rails version 2.3.5

Is there any information, tutorial, guides etc. I can follow

Any help would be greatly appreciated

Kind Regards

Gurdipe

2

Check out

It is my personal recommendation that you do three things:

  1. Create fresh new Rails 3 app for yourself to “play around in” first.
    In fact, you don’t even need to play much, you just need to compare your
    existing config files to the config files in your brand new rails app.
    Moving the Gem version of Rails doesn’t change config settings, and most
    of the Rails 3 good stuff is in config settings (like the asset
    pipeline.) When they say “it works this way by default in Rails 3” –
    they DO NOT mean you will get that behavior automatically just by moving
    the Gem version – they mean that when you do “rails new xyz” the
    default configuration on your newly created app is set that way.

  2. Don’t actually upgrade the existing repository. Instead, create a new
    Rails apps and copy files into it (Controllers, Views, Models, etc) one
    by one. This is more or less practical depending on your situation, so
    take this suggestion with a grain of salt. But if you do it this way,
    you can iteratively test as you make changes to confirm that each page
    and/or section of your app works.

  3. Consider upgrading to 3.0.9 without the asset pipeline first. Then
    when you have it working in Rails 3.0.9, enable the asset pipeline (in
    application.rb) and move all the way up to Rails 3.2.1 (or whatever the
    latest is)

Beyond that, expect to have to:

  • Rewrite your routes.rb file (there’s a new syntax)
  • Change instances of <% form_for %> to <%= form_for %> in views
  • Change “named_scope” to “scope” in models

There’s also an official upgrade path, but I don’t even recommend that
either. You’ll learn more about Rails 3 and become a better developer if
you do it piece-by-piece, following suggestion #2 above.

-Jason

3

Hi Gurdipe,

There is a series of RailsCasts that you can watch to get a reasonable
idea
of how to approach the upgrade.

Chirag
http://sumeruonrails.com

On Sat, Apr 7, 2012 at 1:46 AM, Jason Fleetwood-Boldt

4

Hi Jason,

Thanks for the awesome brilliant reply, its been a great help to me.

Gurdipe

5

Hi Chirag ,

Thanks mate, I’ll definitely checkout these rails casts out.

Gurdipe

6

Quoting Gurdipe D. [email protected]:

Ruby on Rails version 2.3.5

Is there any information, tutorial, guides etc. I can follow

Any help would be greatly appreciated

In addition to the other advice, overriding ActiveRecord callbacks was
deprecated in 2.3.8. So replace

def before_save
# whatever
end

with:

before_save :whatever

private

def whatever
# whatever
end

HTH,
Jeffrey

7

I suggest you get your tests in gear if not already

get a core group (start with models, then controllers, minimum of
models) passing in 2.3.5

then upgrade

you’ll find a great number of plugins and gems will need to be upgraded

  • and some will have to be hand patched if you cannot find a suitable
    replacement
    Jodi
8

On 6 April 2012 20:35, Gurdipe D. [email protected] wrote:

Hi All,

Re: Upgrading to Rails 3

I am working on a railsapplicationI need to upgrade to the latest version
of Ruby and Ruby on Rails.

Make sure your automated test coverage is complete before you start,
then you can be reasonably confident, when you have finished, that all
is working.

Colin

Kind Regards
[email protected].
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

–
gplus.to/clanlaw

9

Hi Jodi,

Thanks for this great point about testing and plugins that need to be
upgraded. Its really helpful

Kind Regards

Gurdipe

10

Hi All,

Thanks to everyone for the great updates on how to upgrade to Rails 3.

What are the technical and business benefits of upgrading to the latest
versions of Ruby an Ruby on Rails.

The application we have written is still on Ruby version 1.8.7 and Ruby
on
Rails version 2.3.5

Kind Regards and Thanks in advance

Gurdipe

11

Hi Colin,

Thanks this point, I am also carrying out a exercise to ensure all the
testing is checked and up to date.

Kind Regards

Gurdipe

12

Quoting Gurdipe D. [email protected]:

Hi All,

Thanks to everyone for the great updates on how to upgrade to Rails 3.

What are the technical and business benefits of upgrading to the latest
versions of Ruby an Ruby on Rails.

The application we have written is still on Ruby version 1.8.7 and Ruby on
Rails version 2.3.5

There are no bug or security fixes for 2.x. Nor if I understand the
policy
correctly, 3.0.x.

I’d suggest moving to 2.3.14 first before jumping to 3.x.

Jeffrey