Ruby on Rails

On Thu, May 27, 2010 at 8:01 AM, Alexandru Nedelcu <me@alexn.org> wrote:
> I'm a Django/Catalyst user that's evaluating Rails ... I need a Ruby
> framework, and I'm trying to see if learning Rails is worth it or I
> should just go for Sinatra + various libs available.
>
> Django has a couple of things I like ...
>
> 1) the Forms API
>
> In Django I like that it's being decoupled from models ... form
> objects have fields with validation rules that also can contain html
> rendering logic ... you can use them just to validate a request and
> that validation can contain business rules that don't make sense to
> have in the actual models. But the forms API can also infer those
> validation rules straight from models, so you have DRY.
>
> Looking at Rails tutorials I can't find this decoupling. Validation
> rules are placed straight into models ... like
> "validates_confirmation_of :password".

I don't know anything about Django, and I don't really understand what
you are trying to do. Business logic is meant to be "straight into
models".

> So I was wondering about Rails3 ... seeing there's a new ActiveModel
> abstraction of the ActiveRecord interface, can I use that to have the
> desired effect?

No. With this abstraction, validations are available for non
ActiveRecord models, but the validations still have to be in the
model.

> Also, where can I find some good and up to date tutorials on Rails3 ?

http://edgeguides.rubyonrails.org Not sure the guides are all up to date though.

> 2) ORM lazyness
>
> I like that Django's ORM and in DBIx::Class, the resultsets
> constructed are lazy. I see that in Rails 3 there's a new Query
> API ... http://m.onkey.org/2010/1/22/active-record-query-interface
>
> Is that ready for use, is it development?
> Or should I just use something like Sequel ... can that be plugged-in
> to Rails?

There is no stable release of Rails 3 yet, as we are still at beta 3.
But this new API is very much ready for use.

--
Gael Muller

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.