Rails - Nov 2007 - Nested resources: controllers and form input names

Let''s say I have a model class like this

  class Parent < ActiveRecord::Base
    has_many :things
    has_one  :special_thing, :classname => ''Thing'', ...
  end

and I want the associations to be handled by UserThingsController and 
UserSpecialThingsController respectively. Theny, apparently, I have to 
set up routes with explicit :controllers

  map.resources :parents do parent|
    parent.resources :things, :controller => :user_things
    parent.resource  :special_thing, :controller => :user_special_things
  end

Or is there a way to get this automatically?

As I want to edit the nested resources in-place on the same page as 
their parent object, I have a view, that contains a forms like these

  <% form_for(@special_thing, :url => image_path) do |f| %>
    <%= f.text_field :name %>

  <% form_for(@things[0], :url => image_path) do |f| %>
    <%= f.text_field :name %>

The first thing to notice is that I have to give the :url argument, for 
otherwise both forms would go to ThingsController instead of 
the "nested" controllers.

Second, the element ids and names are unusable. What I get is

  <form action="/parent/1/special_thing"
    id="new_thing" method="post">
    <input 
      id="thing_name"
      name="thing[name]"
      type="text" />

Whereas what I need is, for the has_one case,

  <form action="/parent/1/special_thing"
    id="new_thing" method="post">
    <input 
      id="parent_special_thing_name" 
      name="parent_special_thing[name]"
      type="text" />

and for the has_many case with the appropriate object ids used in 
names/ids.

I just can''t get this stuff to do (easily) what I think it ought to do.
That may well be an indication that I''m misunderstanding something 
considerably. What''s the right way?

Michael

-- 
Michael Schuerig
mailto:michael-q5aiKMLteq4b1SvskN2V4Q@public.gmane.org
http://www.schuerig.de/michael/

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