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Controller class names are pluralized. The reason is the controller controls multiple instances of object instance.

Example:

OrdersController would be the controller for an orders table. Rails will then look for the class definition in a file called orders_controller.rb in the /app/controllers directory.

Example:

PostsController would be the controller for a posts table.

If the controller class name has multiple capitalized words, the table name is assumed to have underscores between these words.

Example:

If a controller is named PendingOrdersController then assumed file name for this controller will be pending_orders_controller.rb.


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