Rails - Mar 2005 - before_filter block and params in functional tests

I''m learning Ruby and Rails at the same time, so I admit this is
probably just a syntax thing.  I''m getting a NoMethodError: undefined
method `[]'' for nil:NilClass in my controller test.

Sales has_many :items and Items belong_to :sale.  I''m setting up a
before_filter to instantiate my sale from the params for several Item
actions.

,----[ app/controllers/item_controller.rb ]
| class ItemController < ApplicationController
|   model :item
|   scaffold :item
|   before_filter( :only => :new ) { @sale =
Sale.find(@params["sale_id"]) }
| end
`----

,----[ test/functional/item_controller_test.rb ]
| class ItemControllerTest < Test::Unit::TestCase
|   fixtures :sales
| 
|   def setup
|     @controller = ItemController.new
|     @request    = ActionController::TestRequest.new
|     @response   = ActionController::TestResponse.new
|   end
| 
|   def test_sale_id
|     get :new, { "sale_id" => "1" }
|     assert_success
|     assert_template_has ''sale''
|   end
| end
`----

When I run the test, it fails with "NoMethodError: undefined method
`[]'' for nil:NilClass" in item_controller.rb:4.  I''m
assuming that
@params is nil here instead of the hash I''m expecting.  I''ve
tried a
couple of variations on that get call:

get :new, :sale_id => 1
get :new, :params => { "sale_id" => 1 }

I''m just not sure what the proper syntax is.  Of course, my filter
block could be bad too.
-- 
doug-jGAhs73c5XxeoWH0uzbU5w@public.gmane.org

Doug Alcorn wrote:
> I''m learning Ruby and Rails at the same time, so I admit this is
> probably just a syntax thing.  I''m getting a NoMethodError:
undefined
> method `[]'' for nil:NilClass in my controller test.
[snip]
> |   before_filter( :only => :new ) { @sale =
Sale.find(@params["sale_id"]) }
[snip]
> When I run the test, it fails with "NoMethodError: undefined method
> `[]'' for nil:NilClass" in item_controller.rb:4.  I''m
assuming that
> @params is nil here instead of the hash I''m expecting. 
I''ve tried a
> couple of variations on that get call:
Try something like:
   before_filter( :only => :new ) {|controller| controller.sale = 
Sale.find(controller.params["sale_id"]) }

--
  Lee O''Mara