ActiveResource Failed With Rails 2.2.1

When Rails try to generate <% form_for(@product) do |f| %> for an
ActiveResource::Base Product, it's failed like that :

product_url failed to generate from {:action=>"show" ...

and with move to 2.1.2 and restart mongrel, it's work well.

Kind Regards

Can you include the whole error message please?

Processing ProductsController#new (for 127.0.0.1 at 2008-11-18
14:26:18) [GET]
  e[4;36;1mSQL (0.2ms)e[0m e[0;1mSET NAMES 'latin1'e[0m
  e[4;35;1mSQL (0.1ms)e[0m e[0mSET SQL_AUTO_IS_NULL=0e[0m
  e[4;36;1mSQL (0.1ms)e[0m e[0;1mSET NAMES 'latin1'e[0m
  e[4;35;1mSQL (0.1ms)e[0m e[0mSET SQL_AUTO_IS_NULL=0e[0m
Rendering template within layouts/products
Rendering products/new

ActionView::TemplateError (product_url failed to generate from
{:action=>"show", :id=>#<Product:0x2093d58 @prefix_options={},
@attributes={}>, :controller=>"products"}, expected:
{:action=>"show", :controller=>"products"}, diff: {:id=>#<Product:
0x2093d58 @prefix_options={}, @attributes={}>}) on line #3 of app/
views/products/new.html.erb:
1: <h1>New product</h1>
2:
3: <% form_for(@product) do |f| %>
4: <%= f.error_messages %>
5:
6: <p>

    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
routing/route_set.rb:376:in `raise_named_route_error'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
routing/route_set.rb:340:in `generate'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
url_rewriter.rb:208:in `rewrite_path'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
url_rewriter.rb:187:in `rewrite_url'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
url_rewriter.rb:165:in `rewrite'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
base.rb:626:in `url_for'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
helpers/url_helper.rb:85:in `send'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
helpers/url_helper.rb:85:in `url_for'
    (eval):15:in `product_path'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
polymorphic_routes.rb:111:in `__send__'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
polymorphic_routes.rb:111:in `polymorphic_url'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
polymorphic_routes.rb:118:in `polymorphic_path'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
helpers/form_helper.rb:269:in `apply_form_for_options!'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
helpers/form_helper.rb:248:in `form_for'
    app/views/products/new.html.erb:3
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
renderable.rb:37:in `send'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
renderable.rb:37:in `render'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
template.rb:73:in `render_template'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
base.rb:251:in `render'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
base.rb:361:in `_render_with_layout'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_view/
base.rb:249:in `render'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
base.rb:1174:in `render_for_file'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
base.rb:905:in `render_without_benchmark'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
benchmarking.rb:51:in `render'
    /Library/Ruby/Gems/1.8/gems/activesupport-2.2.1/lib/active_support/
core_ext/benchmark.rb:8:in `realtime'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
benchmarking.rb:51:in `render'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
mime_responds.rb:135:in `send'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
mime_responds.rb:135:in `custom'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
mime_responds.rb:164:in `call'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
mime_responds.rb:164:in `respond'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
mime_responds.rb:158:in `each'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
mime_responds.rb:158:in `respond'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
mime_responds.rb:107:in `respond_to'
    app/controllers/products_controller.rb:29:in `new'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
base.rb:1253:in `send'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
base.rb:1253:in `perform_action_without_filters'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
filters.rb:617:in `call_filters'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
filters.rb:610:in `perform_action_without_benchmark'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue'
    /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/
ruby/1.8/benchmark.rb:293:in `measure'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
rescue.rb:136:in `perform_action_without_caching'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
caching/sql_cache.rb:13:in `perform_action'
    /Library/Ruby/Gems/1.8/gems/activerecord-2.2.1/lib/active_record/
connection_adapters/abstract/query_cache.rb:34:in `cache'
    /Library/Ruby/Gems/1.8/gems/activerecord-2.2.1/lib/active_record/
query_cache.rb:8:in `cache'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
caching/sql_cache.rb:12:in `perform_action'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
base.rb:524:in `send'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
base.rb:524:in `process_without_filters'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
filters.rb:606:in `process_without_session_management_support'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
session_management.rb:134:in `process'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
base.rb:392:in `process'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
dispatcher.rb:183:in `handle_request'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
dispatcher.rb:110:in `dispatch_unlocked'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
dispatcher.rb:123:in `dispatch'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
dispatcher.rb:122:in `synchronize'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
dispatcher.rb:122:in `dispatch'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
dispatcher.rb:132:in `dispatch_cgi'
    /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/action_controller/
dispatcher.rb:39:in `dispatch'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:
76:in `process'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:
74:in `synchronize'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:
74:in `process'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:159:in
`process_client'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in
`each'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in
`process_client'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in
`run'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in
`initialize'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in
`new'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in
`run'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in
`initialize'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in
`new'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in
`run'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/
configurator.rb:282:in `run'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/
configurator.rb:281:in `each'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/
configurator.rb:281:in `run'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:in
`run'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/command.rb:
212:in `run'
    /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
    /usr/bin/mongrel_rails:19:in `load'
    /usr/bin/mongrel_rails:19

Rendered /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/
action_controller/templates/rescues/_trace (37.4ms)
Rendered /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/
action_controller/templates/rescues/_request_and_response (0.7ms)
Rendering /Library/Ruby/Gems/1.8/gems/actionpack-2.2.1/lib/
action_controller/templates/rescues/layout.erb (internal_server_error)

Can you Open a ticket for this? We'll also need your routes file.

It looks like this is caused by you having map.resource :product
instead of map.resources :products?

Ok http://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/1455-activeresource-failed-with-rails-221