Rails: How to add HTTP AUTH at custom action

Question

How to add HTTP AUTH at custom controller action?

class MyController < ApplicationController
  def index
    #NO AUTH
  end

  def custom
    #I NEED HTTP AUTH ONLY HERE
  end
end

routes.rb:

get 'my/custom', to: 'my#custom'

Answer 1

class MyController < ApplicationController
  http_basic_authenticate_with name: "dhh", password: "secret", only: [:custom]

  def custom
    #I NEED HTTP AUTH ONLY HERE
  end
end

You can also call the auth directly in the action:

class MyController < ApplicationController
  def custom
    authenticate_or_request_with_http_basic do |username, password|
      username == "dhh" && password == "secret"
    end

    ...
  end
end

Here are the docs for more advanced usage: https://api.rubyonrails.org/classes/ActionController/HttpAuthentication/Basic.html