Is it the rails way to use singular or plural controller names?

Should I use /article or /articles开发者_StackOverflow社区 ?

You can use either. If you are defining your routes using resource(s) then it's best to use plural controller names, because that is the default:

resources :articles
resource :articles

But it is possible to specify other controller names as well:

resources :articles, :controller => 'article'
resource :article, :controller => 'article'

You can use either. However, It is better to use the plural. A controller is a class that, most often, accesses more than one instance of a model.

Eg: For a model by the name Subject, a controller accesses lot of instances of Subject, viz., subjects. Therefore, we name SubjectsController instead of SubjectController.

Plural

For the name of the actual controller class, and file it lives in. e.g class ArticlesController... living in /app/controllers/articles_controller.rb