Rails - Jul 2010 - Nested routes with has_many associations via a :foreign_key

My app calls for the use of :foreign_key into a model that it should
be nested with. I can''t get the routes set up the way I want them.
Here is an example:

People buy and sell from each other. The purchase or sale is recorded
in an Order model.

class Person < ActiveRecord::Base
	has_many :purchases, :class_name => ''Order'', :foreign_key
=>
''buyer_id''
	has_many :sales, :class_name => ''Order'', :foreign_key
=> ''seller_id''
...

class Order < ActiveRecord::Base
	belongs_to :seller, :class_name => "Person"
	belongs_to :buyer, :class_name => "Person"
...

The routes to display a list of purchases or sales is /people/1/orders?
buyer_id=1 and /people/1/orders?seller_id=1 respectively. The route
table has this entry:
	map.resources :people, :has_many => :orders

The Orders controller ferrets out which parameter was sent in and does
the appropriate search before rendering the index. (At this point, I
feel all sticky and want to take a shower.)

I''d really like to have nested routes such as /people/1/purchases and /
people/1/sales. So I''m kind of surprised I can''t do this in
Rails
2.3.8:
	map.resources :people do |people|
		people.resource :sales, :as => ''orders''
		people.resource :purchases, :as => ''orders''
	end

... or something similar to give me the correct nested routes.

Maybe you have a better way? Maybe I''m missing something.

Thanks,
d.

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Dee wrote:
> 
> I''d really like to have nested routes such as /people/1/purchases
and /
> people/1/sales. So I''m kind of surprised I can''t do this
in Rails
You can do it with map.connect. You may have to play with the syntax, 
but I think this will work:

map.connect ''people/:person_id/:controller'',
            :action => ''index'',
            :person_id => /\d+/

That will make ''people/1/sales'' the equivalent of
''sales?person_id=1''

You''ll then need to update you index action in your sales controller,
to
detect params[:person_id] and use it to modify @sales. Or you can create 
a custom action to handle this.



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