Rails - Dec 2005 - Single controller to browse things in categories

First off, hi, I''m [obviously] new :O)

Please excuse my question as I''m sure it''s been answered, but
I can''t
find it anywhere.

I have a table of categories:
id name
1 Foo
2 Bar

I have things which belong_to categories:
id category_id subject date
1 1 my subject 07/09/2004

and Further classifications which belong_to categories:
id category_id name
1 1 More Foo
2 1 Most Foo
3 2 Some Bar

and subcategories which belong_to categories, classifications, and 
things
id category_id classification_id thing_id
1 1 1 some item
2 1 2 another item

I want my index to contain links to those categories:
Foo
Bar

By clicking on Foo, I''d like it to display things belonging to Foo, and
expand to show classifications
Foo
  - More Foo         (Foo Stuff)
  - Most Foo
Bar


It seems like I should be able to do this without having to create a 
controller for each Foo, Bar, etc Category, but I can''t figure out how.

If the standard index page shows categories, it seems as if I''m simply 
adding a filter now to say "ok, get categories, but only if they are of 
type X".

Again, sorry if this is a stupid question.  Thanks for any help you can 
provide.

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I suppose I partially figured this out... I added the method to the 
controller for that category name.  I suppose I could use a 
method_missing type of thing to make this a little more dynamic, or is 
that a bad idea?

Of course, now it complains about missing the view... what would I do 
for that?

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I came across that in the Agile Web Development  book (...plug)

Apparently, you can do a

ruby script/generate controller Admin::Book action1 action2 ...

to generate a Book controller and model within the Admin module.

which you would reference as http://my.app/admin/book/edit/1234

You would reference

class Admin::BookController < ApplicationController ,,,

and

class Content::BookController << ApplicationController

The first BookController would be in app/controllers/admin,

the second would be in app/controllers/content

The template for the first would be in

app/views/admin/book/edit.rhtml

The template for the second would be in

app/views/content/book/edit.rhtml

Don''t know if the scaffold generator supports this,




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err, nevermind, I think I figured this out... like I said, I''m new :O)

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