Adding modules to an API-only Rails app

Ruby on Rails
1

Hi all! Quick question. In this section of the guide, there’s a short list of ActionController modules that can be optionally added back in to API-only apps. But when I try to include the module for HTTP Basic Authentication, Rails is throwing a 404 error.

ApplicationController:

class ApplicationController < ActionController::API
  include ActionController::HttpAuthentication::Basic
  ...
end

Test controller:

class TestController < ApplicationController
  http_basic_authenticate_with name: "asdf", password: "password"
  ...
end

If I switch

ApplicationController < ActionController::API

to

ApplicationController < ActionController::Base

then the http_basic_authenticate_with method works properly. But when it inherits from ActionController::API, I get the error:

#<ActionController::RoutingError: undefined method 'http_basic_authenticate_with' ...

Do I need to include that module in a different way?