ruby gem devise could not generate initializer - ruby-on-rails

I followed the steps on https://github.com/plataformatec/devise to install devise.
after bundle install
I tried to add initializer to my app config using:
rails generate devise:install
However, I keep getting this error:
undefined method `devise' for User (call 'User.connection' to establish a connection):Class (NoMethodError)
Stack trace:
/Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activerecord-4.0.10/lib/active_record/dynamic_matchers.rb:22:in `method_missing': undefined method `devise' for User (call 'User.connection' to establish a connection):Class (NoMethodError)
from /Users/MyUsername/Documents/AppDev/Pinteresting/app/models/user.rb:4:in `<class:User>'
from /Users/MyUsername/Documents/AppDev/Pinteresting/app/models/user.rb:1:in `<top (required)>'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:424:in `load'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:424:in `block in load_file'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:616:in `new_constants_in'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:423:in `load_file'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:324:in `require_or_load'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:463:in `load_missing_constant'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:184:in `const_missing'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/inflector/methods.rb:226:in `const_get'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/inflector/methods.rb:226:in `block in constantize'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/inflector/methods.rb:224:in `each'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/inflector/methods.rb:224:in `inject'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/inflector/methods.rb:224:in `constantize'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:535:in `get'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:566:in `constantize'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise.rb:302:in `get'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise/mapping.rb:80:in `to'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise/mapping.rb:75:in `modules'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise/mapping.rb:92:in `routes'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise/mapping.rb:159:in `default_used_route'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise/mapping.rb:69:in `initialize'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise.rb:336:in `new'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise.rb:336:in `add_mapping'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise/rails/routes.rb:224:in `block in devise_for'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise/rails/routes.rb:223:in `each'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/devise-3.4.0/lib/devise/rails/routes.rb:223:in `devise_for'
from /Users/MyUsername/Documents/AppDev/Pinteresting/config/routes.rb:2:in `block in <top (required)>'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/actionpack-4.0.10/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/actionpack-4.0.10/lib/action_dispatch/routing/route_set.rb:337:in `eval_block'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/actionpack-4.0.10/lib/action_dispatch/routing/route_set.rb:315:in `draw'
from /Users/MyUsername/Documents/AppDev/Pinteresting/config/routes.rb:1:in `<top (required)>'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:223:in `load'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:223:in `block in load'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:214:in `load_dependency'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:223:in `load'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application/routes_reloader.rb:40:in `each'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application/routes_reloader.rb:40:in `load_paths'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application/routes_reloader.rb:16:in `reload!'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application/routes_reloader.rb:26:in `block in updater'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/file_update_checker.rb:75:in `call'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/file_update_checker.rb:75:in `execute'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application/routes_reloader.rb:27:in `updater'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application/routes_reloader.rb:6:in `execute_if_updated'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application/finisher.rb:69:in `block in <module:Finisher>'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/initializable.rb:30:in `run'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/MyUsername/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
from /Users/MyUsername/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
from /Users/MyUsername/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
from /Users/MyUsername/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
from /Users/MyUsername/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/tsort.rb:180:in `each'
from /Users/MyUsername/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
from /Users/MyUsername/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application.rb:215:in `initialize!'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /Users/MyUsername/Documents/AppDev/Pinteresting/config/environment.rb:5:in `<top (required)>'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:229:in `require'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:229:in `block in require'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:214:in `load_dependency'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/activesupport-4.0.10/lib/active_support/dependencies.rb:229:in `require'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/application.rb:189:in `require_environment!'
from /Users/MyUsername/.rvm/gems/ruby-2.0.0-p576/gems/railties-4.0.10/lib/rails/commands.rb:44:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'

Okay, I figured out the problem. I guess because I previous installed devise and tried to reinstall a new version. However, devise automatically created some models for the app. I deleted those created folders/files and rerun rails generate devise:install and it worked.

Related

Unable to install devise gem "unidentified method for install"on Rails

When I try to perform "rails generate devise:install" I get this error message:
I've tried re-installing the devise gem multiple times. This error also comes up when I try to start up my server. I'm wondering if the cause of this is from initially trying to install the devise gem with "rails generate devise install" instead of putting a colon between devise and install.
Maxs-MacBook-Air:pinteresting allecat941$ rails generate devise:install
/Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.1/lib/active_record/dynamic_matchers.rb:26:in `method_missing': undefined method `devise' for Install (call 'Install.connection' to establish a connection):Class (NoMethodError)
from /Users/allecat941/pinteresting/app/models/install.rb:4:in `<class:Install>'
from /Users/allecat941/pinteresting/app/models/install.rb:1:in `<top (required)>'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:443:in `load'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:443:in `block in load_file'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:633:in `new_constants_in'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:442:in `load_file'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:342:in `require_or_load'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:480:in `load_missing_constant'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:180:in `const_missing'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:238:in `const_get'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:238:in `block in constantize'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:236:in `each'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:236:in `inject'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:236:in `constantize'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:552:in `get'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:583:in `constantize'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise.rb:297:in `get'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise/mapping.rb:77:in `to'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise/mapping.rb:72:in `modules'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise/mapping.rb:89:in `routes'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise/mapping.rb:156:in `default_used_route'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise/mapping.rb:66:in `initialize'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise.rb:331:in `new'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise.rb:331:in `add_mapping'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise/rails/routes.rb:221:in `block in devise_for'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise/rails/routes.rb:220:in `each'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/devise-3.2.4/lib/devise/rails/routes.rb:220:in `devise_for'
from /Users/allecat941/pinteresting/config/routes.rb:2:in `block in <top (required)>'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/actionpack-4.1.1/lib/action_dispatch/routing/route_set.rb:335:in `instance_exec'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/actionpack-4.1.1/lib/action_dispatch/routing/route_set.rb:335:in `eval_block'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/actionpack-4.1.1/lib/action_dispatch/routing/route_set.rb:313:in `draw'
from /Users/allecat941/pinteresting/config/routes.rb:1:in `<top (required)>'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `load'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `block in load'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:in `load_dependency'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `load'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:40:in `each'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:40:in `load_paths'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:16:in `reload!'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:26:in `block in updater'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/file_update_checker.rb:75:in `call'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/file_update_checker.rb:75:in `execute'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:27:in `updater'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/initializable.rb:30:in `run'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/2.0.0/tsort.rb:180:in `each'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/railties-4.1.1/lib/rails/application.rb:288:in `initialize!'
from /Users/allecat941/pinteresting/config/environment.rb:5:in `<top (required)>'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `require'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `block in require'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:in `load_dependency'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `require'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/spring-1.1.3/lib/spring/application.rb:92:in `preload'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/spring-1.1.3/lib/spring/application.rb:140:in `serve'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/spring-1.1.3/lib/spring/application.rb:128:in `block in run'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/spring-1.1.3/lib/spring/application.rb:122:in `loop'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/spring-1.1.3/lib/spring/application.rb:122:in `run'
from /Users/allecat941/.rvm/gems/ruby-2.1.1/gems/spring-1.1.3/lib/spring/application/boot.rb:18:in `<top (required)>'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /Users/allecat941/.rbenv/versions/2.0.0-p451/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from -e:1:in `<main>'
It looks like your accidental install created Install model and other files. Delete those, perhaps?
I am using the device gem and without devise install . Then use, the cmd rails g device auth in this case rails throw the error than using this method my problem is solved
extend Devise::Models
in my auth.rb files
class Auth < ApplicationRecord
extend Devise::Models
end

devise gem install for Ruby on Rails

just started learning Ruby on Rails, I'm trying to install the devise gem for creating a login/signin lesson, but I keep getting the following messages..
Could anyone help please? and feel free to correct me on how i'm asking the questions. New to this community and would love to be involved.
alexs-air:pinteresting alexkwon$ rails generate devise:install
/Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activerecord-4.1.1/lib/active_record/dynamic_matchers.rb:26:in `method_missing': undefined method `devise' for Install (call 'Install.connection' to establish a connection):Class (NoMethodError)
from /Users/alexkwon/Desktop/pinteresting/app/models/install.rb:4:in `<class:Install>'
from /Users/alexkwon/Desktop/pinteresting/app/models/install.rb:1:in `<top (required)>'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:443:in `load'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:443:in `block in load_file'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:633:in `new_constants_in'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:442:in `load_file'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:342:in `require_or_load'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:480:in `load_missing_constant'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:180:in `const_missing'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:238:in `const_get'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:238:in `block in constantize'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:236:in `each'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:236:in `inject'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/inflector/methods.rb:236:in `constantize'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:552:in `get'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:583:in `constantize'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:297:in `get'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:77:in `to'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:72:in `modules'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:89:in `routes'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:156:in `default_used_route'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:66:in `initialize'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:331:in `new'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:331:in `add_mapping'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:221:in `block in devise_for'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:220:in `each'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:220:in `devise_for'
from /Users/alexkwon/Desktop/pinteresting/config/routes.rb:2:in `block in <top (required)>'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.1/lib/action_dispatch/routing/route_set.rb:335:in `instance_exec'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.1/lib/action_dispatch/routing/route_set.rb:335:in `eval_block'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.1/lib/action_dispatch/routing/route_set.rb:313:in `draw'
from /Users/alexkwon/Desktop/pinteresting/config/routes.rb:1:in `<top (required)>'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `load'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `block in load'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:in `load_dependency'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `load'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:40:in `each'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:40:in `load_paths'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:16:in `reload!'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:26:in `block in updater'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/file_update_checker.rb:75:in `call'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/file_update_checker.rb:75:in `execute'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:27:in `updater'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/initializable.rb:30:in `run'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:347:in `block in each_strongly_connected_component'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:in `each'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:in `call'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:in `each_strongly_connected_component'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:224:in `tsort_each'
from /Users/alexkwon/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:205:in `tsort_each'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application.rb:288:in `initialize!'
from /Users/alexkwon/Desktop/pinteresting/config/environment.rb:5:in `<top (required)>'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `require'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `block in require'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:in `load_dependency'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `require'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/application.rb:264:in `require_environment!'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:147:in `require_application_and_environment!'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:133:in `generate_or_destroy'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:51:in `generate'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
from /Users/alexkwon/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:8:in `require'
from bin/rails:8:in `<main>'
Welcome to Rails man.
I know the community is all up on the devise gem. The reality is that Devise is an advanced authentication app that's a gem.
If you're learning, and you need authentication, some super geek named Ryan Bates hooked you up with a tutorial and screencast on basic authentication that will work exactly how you need it, and you will understand what's going on:
http://railscasts.com/episodes/250-authentication-from-scratch
WHABAM!
Be mindful that is based on rails 3. Check the differences between rails, and ruby versions if you encounter problems while following directions. If you do get errors, still, this path will get your further to deploying that app of yours.
Come back to Devise when you need the features it provides, Rails, and confident you can implement ideas found in the book 'Crafting Rails Application' by José Valim. He's one of the main contributors of Devise, so you'll get insight on his thought process.

What does this Devise error mean?

When I try to run my rails server I get the following error (Important note: I have just pulled my code from Github to Nitrous.Io, and was starting to work on the application):
/home/action/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/inflector/methods.rb:226:in `const_get': uninitialized constant User (NameEr
ror) from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/inflector/methods.rb:226:in `block in constantize'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/inflector/methods.rb:224:in `each'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/inflector/methods.rb:224:in `inject'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/inflector/methods.rb:224:in `constantize'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise.rb:285:in `get'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/mapping.rb:77:in `to'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/mapping.rb:72:in `modules'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/mapping.rb:89:in `routes'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/mapping.rb:156:in `default_used_route'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/mapping.rb:66:in `initialize'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise.rb:319:in `new'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise.rb:319:in `add_mapping'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/rails/routes.rb:210:in `block in devise_for'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/rails/routes.rb:209:in `each'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/rails/routes.rb:209:in `devise_for'
from /home/action/pinteresting/config/routes.rb:4:in `block in <top (required)>'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/route_set.rb:316:in `instance_exec'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/route_set.rb:316:in `eval_block'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/route_set.rb:294:in `draw'
from /home/action/pinteresting/config/routes.rb:1:in `<top (required)>'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:40:in `each'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:40:in `load_paths'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:16:in `reload!'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:26:in `block in updater'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/file_update_checker.rb:75:in `call'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/file_update_checker.rb:75:in `execute'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:27:in `updater'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:6:in `execute_if_updated'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/finisher.rb:69:in `block in <module:Finisher>'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers'
from /home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
from /home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
from /home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
from /home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
from /home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each'
from /home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
from /home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /home/action/pinteresting/config/environment.rb:5:in `<top (required)>'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application.rb:189:in `require_environment!'
from /home/action/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/commands.rb:45:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
Looks like your database hasn't yet been created.
The most likely solution would be to run rake db:migrate if you're using sqlite, though if you're using Postgres or Mysql on Nitrous, you'll need to install them first. There is a guide to what's available here http://help.nitrous.io/categories/databases/

Rails devise generate model error

I'm trying to use 'rails generate devise model1' in rails 4, but the following error up.
> /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:229:in `default_controller_and_action': missing :controller (ArgumentError)
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:116:in `normalize_options!'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:64:in `initialize'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1438:in `new'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1438:in `add_route'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1417:in `decomposed_match'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1398:in `block in match'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1389:in `each'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1389:in `match'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:330:in `root'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1459:in `root'
from /home/p4/rails_tut/test_app/config/routes.rb:3:in `block in <top (required)>'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/route_set.rb:316:in `instance_exec'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/route_set.rb:316:in `eval_block'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/routing/route_set.rb:294:in `draw'
from /home/p4/rails_tut/test_app/config/routes.rb:1:in `<top (required)>'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:222:in `load'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:222:in `block in load'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:222:in `load'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:40:in `each'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:40:in `load_paths'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:16:in `reload!'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:26:in `block in updater'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/file_update_checker.rb:75:in `call'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/file_update_checker.rb:75:in `execute'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:27:in `updater'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:6:in `execute_if_updated'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application/finisher.rb:69:in `block in <module:Finisher>'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers'
from /home/p4/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
from /home/p4/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
from /home/p4/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
from /home/p4/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
from /home/p4/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each'
from /home/p4/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
from /home/p4/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /home/p4/rails_tut/test_app/config/environment.rb:5:in `<top (required)>'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application.rb:189:in `require_environment!'
from /home/p4/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/commands.rb:45:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
I have no idea what this the internal working of rails is as this error seem to be some problem coming from 'mapping.rb'.
The following it my routes.rb
TestApp::Application.routes.draw do
root 'dunbs' => 'dunbs#index'
end
Your syntax for defining a root route is incorrect, it should be either root to: 'dunbs#index' or root 'dunbs#index'.
See http://guides.rubyonrails.org/routing.html#using-root for more details.

Rails: error installing backbone-on-rails gem

I included 'backbone-on-rails' in my Gemfile, did bundle install, and then did
rails generate backbone:install --javascript
And I got the error below. I'm using rails 3.2.8 and ruby 193. Can anyone explain what the problem might be?
If I can't get the gem to work, does anyone know where I should include _underscore and backbone in a Rails application?
/Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:181:in `default_controller_and_action': missing :controller (ArgumentError)
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:78:in `normalize_options!'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:61:in `initialize'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:1304:in `new'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:1304:in `add_route'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:1284:in `decomposed_match'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:1270:in `block in match'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:1270:in `each'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:1270:in `match'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:507:in `map_method'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:469:in `get'
from /Users/michael/Sites/backy/config/routes.rb:2:in `block in <top (required)>'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/route_set.rb:282:in `instance_exec'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/route_set.rb:282:in `eval_block'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/actionpack-3.2.8/lib/action_dispatch/routing/route_set.rb:260:in `draw'
from /Users/michael/Sites/backy/config/routes.rb:1:in `<top (required)>'
from /Users/michaeljohnmitchell/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `load'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `block in load'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:236:in `load_dependency'
from /Users/michaeljohnmitchell/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `load'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application/routes_reloader.rb:40:in `each'
from /Users/michaeljohnmitchell/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application/routes_reloader.rb:40:in `load_paths'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application/routes_reloader.rb:16:in `reload!'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application/routes_reloader.rb:26:in `block in updater'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/activesupport-3.2.8/lib/active_support/file_update_checker.rb:78:in `call'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/activesupport-3.2.8/lib/active_support/file_update_checker.rb:78:in `execute'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application/routes_reloader.rb:27:in `updater'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application/finisher.rb:66:in `block in <module:Finisher>'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/initializable.rb:30:in `run'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/initializable.rb:54:in `each'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application.rb:136:in `initialize!'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /Users/michael/Sites/backy/config/environment.rb:5:in `<top (required)>'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application.rb:103:in `require'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/application.rb:103:in `require_environment!'
from /Users/michael/.rvm/gems/ruby-1.9.3-rc1#ruby193/gems/railties-3.2.8/lib/rails/commands.rb:25:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
It had nothing to do with backbone-on-rails. I had an error in the route that was defined in routes.rb

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