Railties cannot load such file - ruby-on-rails

Question

First, you should know upfront I am a newb to rails so I apologize if this is a dumb mistake but I've been racking my brain on it and thought I'd ask for some help.
I am currently unable to start my local rails server all of the sudden. Not sure what I've done to cause this as I was able to start it earlier today just fine. Only thing I've done in between it working and not was trying to figure out how to push the app to Heroku.
When running rails s while in root of the app I get this error:
/Users/jonathanmacdonald/code/lrbp/config/application.rb:6:in `require': cannot load such file -- active_job/railtie (LoadError)
from /Users/jonathanmacdonald/code/lrbp/config/application.rb:6:in `<top (required)>'
from /Library/Ruby/Gems/2.0.0/gems/railties- 4.2.3/lib/rails/commands/commands_tasks.rb:78:in `require'
from /Library/Ruby/Gems/2.0.0/gems/railties- 4.2.3/lib/rails/commands/commands_tasks.rb:78:in `block in server'
from /Library/Ruby/Gems/2.0.0/gems/railties- 4.2.3/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /Library/Ruby/Gems/2.0.0/gems/railties- 4.2.3/lib/rails/commands/commands_tasks.rb:75:in `server'
from /Library/Ruby/Gems/2.0.0/gems/railties- 4.2.3/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /Library/Ruby/Gems/2.0.0/gems/railties- 4.2.3/lib/rails/commands.rb:17:in `<top (required)>'
from /Users/jonathanmacdonald/code/lrbp/bin/rails:10:in `require'
from /Users/jonathanmacdonald/code/lrbp/bin/rails:10:in `<top (required)>'
from /Library/Ruby/Gems/2.0.0/gems/spring- 1.6.2/lib/spring/client/rails.rb:28:in `load'
from /Library/Ruby/Gems/2.0.0/gems/spring- 1.6.2/lib/spring/client/rails.rb:28:in `call'
from /Library/Ruby/Gems/2.0.0/gems/spring- 1.6.2/lib/spring/client/command.rb:7:in `call'
from /Library/Ruby/Gems/2.0.0/gems/spring- 1.6.2/lib/spring/client.rb:28:in `run'
from /Library/Ruby/Gems/2.0.0/gems/spring-1.6.2/bin/spring:49:in `<top (required)>'
from /Library/Ruby/Gems/2.0.0/gems/spring- 1.6.2/lib/spring/binstub.rb:11:in `load'
from /Library/Ruby/Gems/2.0.0/gems/spring- 1.6.2/lib/spring/binstub.rb:11:in `<top (required)>'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Users/jonathanmacdonald/code/lrbp/bin/spring:13:in `<top (required)>'
from bin/rails:4:in `load'
from bin/rails:4:in `<main>'
Gemfile
source 'https://rubygems.org'
group :production do
gem 'rails', '4.2.3'
gem 'pg'
gem 'rails_12factor'
gem 'bootstrap-sass'
end
group :development, :test do
gem 'sqlite3'
gem 'byebug'
gem 'web-console', '~> 2.0'
gem 'spring'
gem 'binding_of_caller'
gem 'better_errors'
end
config/application.rb
require File.expand_path('../boot', __FILE__)
require "rails"
# Pick the frameworks you want:
require "active_model/railtie"
require "active_job/railtie"
require "active_record/railtie"
require "action_controller/railtie"
require "action_mailer/railtie"
require "action_view/railtie"
require "sprockets/railtie"
# require "rails/test_unit/railtie"
require 'rails/all'
# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)
module Lrbp
class Application < Rails::Application
# Settings in config/environments/* take precedence over those specified here.
# Application configuration should go into files in config/initializers
# -- all .rb files in that directory are automatically loaded.
# Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
# Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
# config.time_zone = 'Central Time (US & Canada)'
# The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
# config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*. {rb,yml}').to_s]
# config.i18n.default_locale = :de
# Do not swallow errors in after_commit/after_rollback callbacks.
config.active_record.raise_in_transactional_callbacks = true
config.assets.initialize_on_precompile = false
end
end
Things I've tried after research
bundle exec rails server ->> Still won't start and produces the exact same error
Temporarily mv Gemfile.lock .. so that I could regenerate it with bundle install ->> No change. Same error.
gem pristine --all ->> No change. Same error.
gem uninstall rails and then afterwards gem install rails ->> No change. Same error.
Setup
OS X 10.11.2
Rails 4.2.3
Ruby 2.0.0
What can I look for or try? Any help is appreciated. Let me know if you need any more information in order to help.

Answer 1

Your application.rb will look like
require File.expand_path('../boot', __FILE__)
require 'rails/all'
Bundler.require(:default, Rails.env)
module Lrbp
class Application < Rails::Application
you do not require to each rails module separately like
# Pick the frameworks you want:
require "active_model/railtie"
require "active_job/railtie"
require "active_record/railtie"
require "action_controller/railtie"
require "action_mailer/railtie"
require "action_view/railtie"
require "sprockets/railtie"
you can use.
require 'rails/all'
it will do something like this
%w(
active_record
action_controller
action_view
action_mailer
rails/test_unit
sprockets
).each do |framework|
begin
require "#{framework}/railtie"
rescue LoadError
end
end
and Gemfile
source 'https://rubygems.org'
gem 'rails', '4.2.3'
gem 'pg'
gem 'rails_12factor'
gem 'bootstrap-sass'
group :development, :test do
gem 'sqlite3'
gem 'byebug'
gem 'web-console', '~> 2.0'
gem 'spring'
gem 'binding_of_caller'
gem 'better_errors'
end
Then you should do
bundle install & bundle exec rails s