Rails4: How to serve gem specific javascript files? - ruby-on-rails

Question

I copied a working rails app into a different directory and renamed it using the rename Gem.
Most of the rails functionality works correct, but I am not able to serve assets bundled with gems specifically js files from bootstrap-slider-rails
I have compared my application.rb , Gemfile and application.js and they are the same in both apps.
I have tried uninstalling and installing the gem again
Simple comparison among the apps is not resolving issue.
Here are the files I have verified are same in both apps:
Gemfile
application.rb
application.html.haml
application.js
Any suggestions how I should debug this ?
Thanks!
Just to show you the issue, compare these 2 images in Rubymine
Working App:
Non working App:
Here is how some relevant files look like:
application.js
application.rb
require File.expand_path('../boot', __FILE__)
# Pick the frameworks you want:
require "active_record/railtie"
require "action_controller/railtie"
require "action_mailer/railtie"
require "sprockets/railtie"
# require "rails/test_unit/railtie"
#if defined?(Bundler)
# # If you precompile assets before deploying to production, use this line
# #Bundler.require(*Rails.groups(:assets => %w(development test)))
# # If you want your assets lazily compiled in production, use this line
# # Bundler.require(:default, :assets, Rails.env)
#end
# Rails4
Bundler.require(:default, Rails.env)
module Smoothlyhired
class Application < Rails::Application
# don't generate RSpec tests for views and helpers
config.generators do |g|
g.test_framework :rspec, fixture: true
g.fixture_replacement :factory_girl, dir: 'spec/factories'
g.view_specs false
g.helper_specs false
end
config.autoload_paths += %W(#{config.root}/lib)
config.encoding = "utf-8"
# Configure sensitive parameters which will be filtered from the log file.
config.filter_parameters += [:password, :password_confirmation]
config.active_record.schema_format = :sql
# Enable the asset pipeline
config.assets.enabled = true
# Version of your assets, change this if you want to expire all your assets
config.assets.version = '1.0'
#Prevent initializing the application and connecting to db on bootup as required by heroku
#https://devcenter.heroku.com/articles/rails-asset-pipeline
# Not required on rails4 anymore
#config.assets.initialize_on_precompile = false
#config.action_view.javascript_expansions[:defaults] = %w(jquery.min jquery_ujs)
end
end
Gemfile
source 'https://rubygems.org'
ruby '2.1.0'
gem 'rails', '4.0.0'
gem 'sass-rails', '~> 4.0.0'
gem 'coffee-rails', git: 'git://github.com/rails/coffee-rails.git'
gem 'uglifier', '>= 1.0.3'
gem 'jquery-rails'
gem 'jquery-ui-rails'
gem 'font-awesome-sass'
gem 'less-rails'
gem 'therubyracer', :platform=>:ruby
gem 'twitter-bootstrap-rails'
#gem 'jquery_mobile_rails'
gem 'js-routes'
gem 'cancan'
gem 'devise'
gem 'figaro'
gem 'haml-rails'
gem 'pg'
gem 'rolify'
gem 'sendgrid'
gem 'simple_form'
gem 'thin'
gem 'rake'
#To use db for storing cookies instead cookie-store
gem 'activerecord-session_store', github: 'rails/activerecord-session_store'
group :development do
gem 'better_errors'
#gem 'binding_of_caller', :platforms=>[:mri_19, :rbx]
#Commenting out platforms part, because may be that's stopping this to be used on the dev machine'
gem 'binding_of_caller'
gem 'guard-bundler'
gem 'guard-rails'
gem 'guard-rspec'
gem 'html2haml'
gem 'quiet_assets'
gem 'rb-fchange', :require=>false
gem 'rb-fsevent', :require=>false
gem 'rb-inotify', :require=>false
# Required with Rails panel chrome extension. This Gem should come after better_errors gem
gem 'meta_request'
end
group :development, :test do
#gem 'factory_girl_rails'
#gem 'rspec-rails'
gem 'pry-byebug'
gem 'pry-stack_explorer'
gem 'pry-rails'
gem 'pry-debugger'
gem 'debugger', '>= 1.6.5'
end
group :test do
gem 'capybara'
gem 'database_cleaner'
gem 'email_spec'
end
group :production do
gem 'rails_12factor'
end
gem 'high_voltage'
#Linkedin Logins
gem "linkedin"
gem "omniauth"
gem "omniauth-linkedin"
gem "omniauth-facebook"
#postgres use hstore in active record
#gem 'activerecord-postgres-hstore'
gem 'state_machine'
gem "ruby-graphviz"
#payments
#gem 'stripe',:git => 'https://github.com/stripe/stripe-ruby'
#gem 'newrelic_rpm'
gem 'pgbackups-archive'
gem 'pg_search'
gem 'acts-as-taggable-on'
#gem 'activeadmin' , github: 'gregbell/active_admin'
gem "activeadmin", git: "https://github.com/gregbell/active_admin"
#gem 'kaminari'
gem 'bootstrap-slider-rails'
#gem 'twitter_bootstrap_form_for'
#gem 'bootstrap_form'
#gem 'formtastic'
gem 'formtastic-bootstrap'
gem 'rename'

Answer 1

Try deleting your gemfile.lock and running bundle install again.
Also refer to this SO post on copying and deploying rails apps. If you didn't, you should delete the .git file and run git init.
I'm not 100% sure this will fix your problem, but my suspicion is that you have gem issue.