Rails expects the controller name to be pluralized even when using
singular resources.  The rails3 beta is wrongly reporting Routing
Errors when anything goes wrong with the controller. See
https://rails.lighthouseapp.com/projects/8994/tickets/3862-cryptic-routing-error-when-applicationcontroller-has-a-bug.

On Feb 9, 5:01 am, Bosko Ivanisevic <[email protected]>
wrote:
> I'm not sure if I'm doing something wrong or there is a problem with
> namespaces and routes in 3.0.0.beta version. After creating new
> application I've generated new controller with
>
> script/rails generate controller Admin::Dashboard show
>
> and added:
>
> namespace :admin do
>   resource :dashboard
> end
>
> to routes.rb, buthttp://localhost:3000/admin/dashboardresulted in
> routing error: No route matches "/admin/dashboard". Maybe I'm wrong
> but it looks like problem is in
> mapper.rb line 391:
>
> def controller
>   options[:controller] || plural
> end
>
> where pluralized version of controller is returned so even:
>
> rake routes
>
> returns correct list of routes (in singular form) final target has
> pluralized version (admin/dashboards) and routing error occurs. Now
> I'm wondering whether I've wrongly defined route or controller method
> should be:
>
> def controller
>   options[:controller] || singular
> end

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