How to disable Turbolinks on Heroku? - ruby-on-rails

Question

First, I removed gem 'turbolinks' and removed the code requiring Turbolinks in the application.js file. So, I successfully disabled Turbolinks in my local machine. Then, I pushed my changes to Heroku, but Turbolinks is still working in production.
How can I disable Turbolinks in Heroku?
When I ran this code:
heroku run cat app/assets/javascripts/application.js
I got following code:
//This is a manifest file that'll be compiled into application.js, which
//will include all the files listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// compiled file.
//
// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
// about supported directives.
//
//= require jquery
//= require jquery_ujs
//= require jquery-ui/effects/effect-highlight
//= require bootstrap
//= require material
//= require materialize-sprockets
//= require custom
//= require cocoon
//= require underscore
//= require_tree .
Also, my Gemfile looks like this on the production environment:
source 'https://rubygems.org'
gem 'rails', '4.2.2'
gem 'bcrypt', '3.1.7'
gem 'faker', '1.4.2'
gem 'carrierwave', '0.10.0'
gem 'mini_magick', '3.8.0'
gem 'fog', '1.36.0'
gem 'will_paginate', '3.0.7'
gem 'bootstrap-will_paginate', '0.0.10'
gem 'bootstrap-sass', '3.2.0.0'
gem 'sass-rails', '5.0.6'
gem 'uglifier', '2.5.3'
gem 'materialize-sass'
gem 'coffee-rails', '4.1.0'
gem 'jquery-rails', '4.0.3'
gem 'jbuilder', '2.2.3'
gem 'sdoc', '0.4.0', group: :doc
gem 'omniauth-facebook'
gem 'figaro'
gem 'material_design_lite-sass'
gem 'material_icons'
gem "font-awesome-rails"
gem 'cocoon'
gem 'simple_form'
gem 'jquery-ui-rails'
gem 'activerecord-reset-pk-sequence'
gem 'underscore-rails'
group :development, :test do
gem 'sqlite3', '1.3.9'
gem 'byebug', '3.4.0'
gem 'web-console', '2.0.0.beta3'
gem 'spring', '1.1.3'
gem "better_errors"
gem "binding_of_caller"
end
group :production do
gem 'pg', '0.17.1'
gem 'rails_12factor', '0.0.2'
gem 'puma', '3.1.0'
end
I have also removed all Turbolinks references in application.html.erb.
But still, Turbolinks isn't being disabled in production environment. What can be the fix?
Note: Turbolinks is successfully disabled in my development environment.

Answer 1

Make "data-turbolinks-track" => false in file app/views/layouts/application.html.erb

Answer 2

Basically straight from here. It's for Rails 4, but I believe the steps are the same.
1) Remove the gem 'turbolinks' line from your Gemfile.
2) Remove the //= require turbolinks from your app/assets/javascripts/application.js .
3) Remove the two "data-turbolinks-track" => true hash key/value pairs from your app/views/layouts/application.html.erb .