Rails 3 can't find a custom action - ruby-on-rails

Question

I've seen this question answered here for Rails 2, but not Rails 3.
I have an app I'm running on localhost called Skynet, which provides one-click access to the scripts that I use regularly:
I have:
config/routes.rb:
Skynet::Application.routes.draw do
resources :robots do
member do
get "cleaner"
end
end
end
app/controllers/robots_controller.rb:
class RobotsController < ApplicationController
def index
respond_to do |format|
format.html
end
end
def cleaner
#output = ''
f = File.open("/Users/steven/Code/skynet/public/input/input.txt", "r")
f.each_line do |line|
#output += line
end
output = Sanitize.clean(#output, :elements => ['title', 'h1', 'h2', 'h3', 'h4', 'p', 'td', 'li'], :attributes => {:all => ['class']}, :remove_contents => ['script'])
newfile = File.new("/Users/steven/Code/skynet/public/output/result.txt", "w")
newfile.write(output)
newfile.close
redirect_to :action => "index"
end
end
(Will refactor later.)
In app/views/robots/index.html.haml I have:
= link_to "test", cleaner_robot_path
When I type rake routes, I get:
cleaner_robot GET /robots/:id/cleaner(.:format) {:controller=>"robots", :action=>"cleaner"}
So why, then, when I point my browser at http://localhost:3000/, do I get the following?
ActionController::RoutingError in Robots#index
Showing /Users/steven/Code/skynet/app/views/robots/index.html.haml where line #1 raised:
No route matches {:action=>"cleaner", :controller=>"robots"}
Extracted source (around line #1):
1: = link_to "test", cleaner_robot_path
Rails.root: /Users/steven/Code/skynet
Application Trace | Framework Trace | Full Trace
app/views/robots/index.html.haml:1:in `_app_views_robots_index_html_haml___2129226934_2195069160_0'
app/controllers/robots_controller.rb:4:in `index'
Request
Parameters:
None
Show session dump
Show env dump
Response
Headers:
None

Answer 1

you defined cleaner as a member function of the resource robots this means you have to supply an id as you can see in your rake routes message /robots/:id/cleaner(.:format)
So your link should look like
= link_to "test", cleaner_robot_path(some_id)
but
I think you want to use cleaner as a collection function:
Skynet::Application.routes.draw do
resources :robots do
collection do
get "cleaner"
end
end
end
then your link has to look like:
= link_to "test", cleaner_robots_path
Notice that robot is now plural!
According to your error message I guess you've tried that but used the collection in plural... Maybe you have to restart your server if you are in production mode.
You can read more about this routing stuff in the Ruby on Rails Guide