Comments on: My Five Favorite Things About Rails 3

By: Electrician

Electrician — Sun, 09 Oct 2011 02:13:00 +0000

As most of Rails developers, recently I’ve been through a process of
unlearning all concepts of older versions of Rails and learning again
the new ones of 3. But hey! I must admit that so far it’s been more
pleasure than pain as things only get simpler and more natural than they
used to be!

Here I’d like to talk about how simple it has become to
integrate unobtrusive jQuery to a Rails app. Let’s use as an example a
system of comments. I’ll create a simple app to create YouTube like
comments:

By: Javix

Javix — Tue, 28 Sep 2010 14:29:09 +0000

I used with previous Rails version (2.3.8) the flash like that to prevent last user deletion:
[code]
#users_controller.rb

def destroy
@user = User.find(params[:id])
begin
@user.destroy
flash[:notice] = 'User was successfully deleted.'
rescue Exception => e
flash[:notice] = e.message
end
respond_to do |format|
format.html { redirect_to(users_url) }
format.xml { head :ok }
end
end
[/code]
and in User model:
[code]
#user.rb
def after_destroy
if User.count.zero?
raise "Can't delete last user"
end
end
[/code]
How to achieve the same functionality in Rails 3.0 (in User model I had to change 'after_destroy' callback):
[code]
#user.rb in Rails 3.0
after_destroy :check_user_for_destroy

def check_user_for_destroy
if User.count.zero?
raise "Can not delete the last user"
end
end
[/code]
Thanks

By: John F. Miller

John F. Miller — Sat, 21 Aug 2010 23:58:14 +0000

Regarding the API in sec. 4: Model needs to also implement a sane to_s method (I think I cannot find definitive documentation anywhere) the spits out the slug (e.g. record id) to use in the url.

By: Kevin

Kevin — Tue, 29 Jun 2010 20:13:25 +0000

Sorry no rights?

By: o learn

o learn — Wed, 10 Mar 2010 05:21:22 +0000

The code on the article is not very good for reading.

By: Diego Viola

Diego Viola — Sun, 06 Dec 2009 09:53:56 +0000

I'm interested in the modularity, like using Sequel instead of ActiveRecord, etc. The Responder looks nice too.

Can't wait for Rails 3.

By: jacques

jacques — Thu, 08 Oct 2009 12:46:19 +0000

Yep, all you need is a Gemfile and you can run gem bundle in any directory. Don't even need a framework, can just require "vendor/gems/environment" and you're set!

By: Sandip Ransing

Sandip Ransing — Thu, 24 Sep 2009 07:42:07 +0000

Thanks for useful post as usual.
I would like to see all other new stuffs that left in this post and will get released as a part of rails 2.3

Thanks,
Sandip R~

By: Conrad Taylor

Conrad Taylor — Thu, 10 Sep 2009 22:19:14 +0000

Hi, I'm interested in implementing the API in (5) but I was wondering, what's the proper way to tell ActionPack about this new ORM and should this API be implemented as a module? Anyway, examples would be greatly appreciated.

Thanks in advance,

-Conrad

By: sensei

sensei — Wed, 02 Sep 2009 11:34:58 +0000

Javascript validations?