RESTful problems - _url failed to generate

Hey guys,

I am a noob, so hopefully this problem has an easy solution. I am
building a simple shopping cart with products that have product
categories.

I have set up my routes like the following:

  map.resources :product_categories do |product_categories|
    product_categories.resources :products
  end

which should get me /product_categories/{:product_category_id}/
products/{:id} (for example)

All of the paths seem to be working except when I click to edit a
product. I am using the
edit_product_category_product_path(@product_category,@product) method
in the link_to. When I click to edit a product with this path, I get
the following error message:

product_category_product_url failed to generate from
{:action=>"show", :product_category_id=>#<Product id: 2, name: "test
2", item_number: "klagkljga", price: #<BigDecimal:2363a60,'0.4323E2',
8(8)>, description: "HEY!", created_at: "2008-07-15 00:41:02",
updated_at: "2008-07-15 00:41:02", product_category_id:
1>, :controller=>"products"}, expected:
{:action=>"show", :controller=>"products"}, diff:
{:product_category_id=>#<Product id: 2, name: "test 2", item_number:
"klagkljga", price: #<BigDecimal:236223c,'0.4323E2',8(8)>,
description: "HEY!", created_at: "2008-07-15 00:41:02", updated_at:
"2008-07-15 00:41:02", product_category_id: 1>}

In my products controller, I have a private method:

  private

  def load_product_category
    @product_category =
ProductCategory.find(params[:product_category_id])
  end

which I call in before_filter on the controller so that this instance
variable is available to all actions

Does anyone have any ideas? I would really appreciate it!

anyone?

How are you doing the link_to?

Try this: edit_product_category_product_path(@product_category.id,@product)

I believe you can also just do:

url_for [@product_category, @product]

if you have your routes set up right. I do this sort of thing all the
time fo nested restful routes:

<%= link_to h(@item.name), [ @category, @item ] %>

Sorry guys, for some reason i wasn't getting email updates that anyone
had posted anything here. Let me try these out and will let you know!
Thanks for your help!