Having problems with singular routes for an uncountable namespaced model in Rails?
Problem:
```ruby
$ rails console
> Namespace::SMS.model_name.singular_route_key => namespace_sm
> app.polymorphic_path(Namespace::SMS.first) => NoMethodError namespace_sm_path
```
Solution:
```ruby
ActiveSupport::Inflector.inflections(:en) do |inflect|
inflect.uncountable %w(namespace_sms)
end
```
Voila:
```ruby
$ rails console
> Namespace::SMS.model_name.singular_route_key => namespace_sms
```