Ruby on Rails how to decouple from ApplicationController?

Question

Ruby on Rails

Hello! The problem is that if I try to detach from the ApplicationController, I can't use Bootstrap.
I do it like this:

class MyController < ApplicationController
  def page
  end
end

remake in

class MyController < ActionController::Base
  def page
  end
end

Of course, in the style file I prescribe the paths of shoe traps

@import "bootstrap-sprockets";
@import "bootstrap";

Immediately on the page, bootstrap falls off from this controller.
Where is the dog buried?

Answer 1

Found the answer. If someone searches - api.rubyonrails.org/classes/ActionController/Base.html
ApplicationController is base and is the "entry point". So if you want to inherit, then only from him.