Challenge 3: Generate a Controller — Solution

Command:
$ rails generate controller Products index show

Expected output / files created:
      create  app/controllers/products_controller.rb
      create  app/views/products/index.html.erb
      create  app/views/products/show.html.erb
      route   get "products/index"
      route   get "products/show"

=begin
Notes:
- The controller file name follows Rails' naming convention exactly like
  the chapter's Welcome example: ProductsController becomes
  products_controller.rb (snake_case, pluralized to match the resource
  name), placed automatically in app/controllers/.
- Two view files are created, one per action listed in the command
  (index and show), each following the pattern
  app/views/<controller_name>/<action_name>.html.erb.
- Two route entries are added to config/routes.rb automatically, one per
  action — this is a simple, unopinionated route per action, distinct
  from the more idiomatic resources :products approach the next chapter
  covers, which would generate a full set of RESTful routes instead of
  one route per explicitly-listed action.
- No model, migration, or database table is created by this command at
  all — rails generate controller only touches the controller and view
  layers, not Active Record.
=end