Cyclic dependency error after removing mathjax-rails

Question

So My Gemfile currently looks like

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.4'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc

gem 'mathjax-rails', '~> 2.5', '>= 2.5.1'
gem 'bootstrap-sass', '~> 3.3', '>= 3.3.5.1'

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
end

It works fine. Funny thing is, as soon as I remove mathjax-rails and try to run in production mode, I get

/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.4/lib/action_dispatch/routing/url_for.rb:99:in `append_features': cyclic include detected (ArgumentError)
    from /usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.4/lib/action_dispatch/routing/url_for.rb:99:in `include'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.4/lib/action_dispatch/routing/url_for.rb:99:in `block in <module:UrlFor>'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/concern.rb:120:in `class_eval'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/concern.rb:120:in `append_features'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/actionview-4.2.4/lib/action_view/railtie.rb:41:in `include'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/actionview-4.2.4/lib/action_view/railtie.rb:41:in `block (2 levels) in <class:Railtie>'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:44:in `each'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.4/lib/action_controller/base.rb:266:in `<class:Base>'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.4/lib/action_controller/base.rb:164:in `<module:ActionController>'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.4/lib/action_controller/base.rb:5:in `<top (required)>'
    from /root/StudySome/app/controllers/application_controller.rb:1:in `<top (required)>'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `block in require'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:360:in `require_or_load'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:317:in `depend_on'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:233:in `require_dependency'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:472:in `block (2 levels) in eager_load!'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:471:in `each'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:471:in `block in eager_load!'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:469:in `each'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:469:in `eager_load!'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/engine.rb:346:in `eager_load!'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/application/finisher.rb:56:in `each'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/application/finisher.rb:56:in `block in <module:Finisher>'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:30:in `instance_exec'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:30:in `run'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:226:in `block in tsort_each'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:429:in `each_strongly_connected_component_from'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:347:in `block in each_strongly_connected_component'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:345:in `each'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:345:in `call'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:345:in `each_strongly_connected_component'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:224:in `tsort_each'
    from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/tsort.rb:203:in `tsort_each'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/initializable.rb:54:in `run_initializers'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/application.rb:352:in `initialize!'
    from /root/StudySome/config/environment.rb:5:in `<top (required)>'
    from /root/StudySome/config.ru:3:in `require'
    from /root/StudySome/config.ru:3:in `block in <main>'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize'
    from /root/StudySome/config.ru:in `new'
    from /root/StudySome/config.ru:in `<main>'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:49:in `eval'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:49:in `new_from_string'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/builder.rb:40:in `parse_file'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/server.rb:299:in `build_app_and_options_from_config'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/server.rb:208:in `app'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/server.rb:61:in `app'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/server.rb:336:in `wrapped_app'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/server.rb:272:in `start'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/server.rb:80:in `start'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:80:in `block in server'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `tap'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `server'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'
=> Booting WEBrick
=> Rails 4.2.4 application starting in production on http://159.203.240.211:80
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting

Why?! I just want to load MathJax from the MathJax CDN...

score 0 · Answer 1 · answered Nov 09 '15 at 17:26

Even though you removed the gem, you might have some mathjax references left in your code. In the usage instructions for the gem, it seems like you have to add some code to routes.rb as well as app/views/layouts/application.html.erb. If those references are there, removing them should fix this sissue.

Cyclic dependency error after removing mathjax-rails

1 Answers1