REST routes & link_to paths

I’ve mapped this nested route for a product catalog…

map.resources :brands do |brand|
brand.resources :product_lines do |product_line|
product_line.resources :products do |product|
product.resources :upcs
end
end
end

And the pretty URLS are working great (when manually typed)…
/brands/1/product_lines/5/products/10/upcs/15/edit

My problem is I don’t know how to construct those pretty links in my
link_to and redirect_to paths…

product_lines_path(:brand_id => params[:id])

returns: /product_lines?brand_id=4

desired: /brands/4/product_lines

link_to product_path(@product)

returns: /products/4

desired: /brands/1/product_lines/5/products/4

Any ideas? Thanks.

Sav wrote:

My problem is I don’t know how to construct those pretty links in my
link_to and redirect_to paths…

Whenever you are looking into a routing issue, your first step should
be:

rake routes

run in your application top level and understand what this is telling
you.

product_lines_path(:brand_id => params[:id])

returns: /product_lines?brand_id=4

desired: /brands/4/product_lines

brand_product_lines_path 1
or:
brand_product_lines_path :brand_id => 1

link_to product_path(@product)

returns: /products/4

desired: /brands/1/product_lines/5/products/4

brand_product_line_product_path 1, 5, 4
or:
brand_product_line_product_path :brand_id => 1,
:product_line_id => 5, :product_id => 4

These URLs are pretty cumbersome. Have a look here for some advise on
nested resources:

http://weblog.jamisbuck.org/2007/2/5/nesting-resources

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