From: Christophe Grandsire <christophe.grandsire@...>
Date: 2005-10-24T17:17:02+09:00
Subject: Re: Newby syntax question

Selon "Achim Domma (SyynX Solutions GmbH)" <achim.domma@syynx.de>:

>
> class RecipeController < ApplicationController
>      scaffold :recipe
> end
>
> What exactly is 'scaffold' in this case? A class method of
> ApplicationController?

Spot on! Notice though that it's also a class method of RecipeController. Class
methods also get inherited. And it's as class method of RecipeController that
it works here.

 Does this method manipulate the RecipeController
> class somehow?

Note that I am not very knowledgeable about Rails (I'm probably one of the few
Rubyists that has not tried his hand at it yet ;) ), but if I remember
correctly it does, creating various instance methods of RecipeController for
the creating, modifying, accessing and erasing of recipe records (put a big
AFAIK behind that).

It's basically like attr_accessor, which is also a class method (actually
defined in Module) and also takes a symbol. Something like:

class Foo
  attr_accessor :foo
end

just creates two methods "foo" and "foo=" to access and modify the contents of
the instance variable @foo it also created for the occasion :) .

 Or am I on the complete wrong way?
>

On the contrary, you were extremely close.
--
Christophe Grandsire.

http://rainbow.conlang.free.fr

It takes a straight mind to create a twisted conlang.