```ruby
class ApplicationController < ActionController::Base
  require "error_handler"
  include ErrorHandler

  if Rails.application.secrets[:basic_auth_user] && Rails.application.secrets[:basic_auth_password]
    http_basic_authenticate_with(
      name: Rails.application.secrets[:basic_auth_user],
      password: Rails.application.secrets[:basic_auth_password]
    )
  end

  protect_from_forgery with: :exception

  before_action :set_locale
  before_action :set_paper_trail_whodunnit

  def current_user
    current_publisher
  end

  def current_ability
    @current_ability ||= Ability.new(current_user, request.remote_ip)
  end
  
  def set_locale
    I18n.locale = params[:locale] || I18n.default_locale
  end

  def handle_unverified_request
    respond_to do |format|
      format.html {
        super
      }
      format.json {
        render json: { message: 'Unverified request' }, status: 401
      }
    end
  end

  def u2f
    @u2f ||= U2F::U2F.new(request.base_url)
  end
end
```

Include user's id for paper_trail
user
```ruby
class ApplicationController < ActionController::Base
  require "error_handler"
  include ErrorHandler

  if Rails.application.secrets[:basic_auth_user] && Rails.application.secrets[:basic_auth_password]
    http_basic_authenticate_with(
      name: Rails.application.secrets[:basic_auth_user],
      password: Rails.application.secrets[:basic_auth_password]
    )
  end

  protect_from_forgery with: :exception

  before_action :set_locale
  before_action :set_paper_trail_whodunnit

  def current_user
    current_publisher
  end

  def user_for_paper_trail
    current_user.try(:id)
  end

  def current_ability
    @current_ability ||= Ability.new(current_user, request.remote_ip)
  end

  def set_locale
    I18n.locale = params[:locale] || I18n.default_locale
  end

  def handle_unverified_request
    respond_to do |format|
      format.html {
        super
      }
      format.json {
        render json: { message: 'Unverified request' }, status: 401
      }
    end
  end

  def u2f
    @u2f ||= U2F::U2F.new(request.base_url)
  end
end
```
assistant