Can't install Devise

Question

Trying to install Devise and I get the following message "Could not find generator devise:install."

leigh@leigh-VirtualBox:~/Projects/dev01$ bundle install
Using rake 10.3.2
Using i18n 0.6.11
Using json 1.8.1
Using minitest 5.4.0
Using thread_safe 0.3.4
Using tzinfo 1.2.1
Using activesupport 4.1.4
Using builder 3.2.2
Using erubis 2.7.0
Using actionview 4.1.4
Using rack 1.5.2
Using rack-test 0.6.2
Using actionpack 4.1.4
Using mime-types 1.25.1
Using polyglot 0.3.5
Using treetop 1.4.15
Using mail 2.5.4
Using actionmailer 4.1.4
Using activemodel 4.1.4
Using arel 5.0.1.20140414130214
Using activerecord 4.1.4
Using execjs 2.2.1
Using autoprefixer-rails 2.1.1.20140710
Using bcrypt 3.1.7
Using sass 3.2.19
Using bootstrap-sass 3.2.0.0
Using thor 0.19.1
Using railties 4.1.4
Using bootswatch-rails 3.2.0
Using coffee-script-source 1.7.1
Using coffee-script 2.3.0
Using coffee-rails 4.0.1
Using data-confirm-modal 1.0.1 from git://github.com/ifad/data-confirm-modal.git (at master)
Using declarative_authorization 0.5.7
Using orm_adapter 0.5.0
Using warden 1.2.3
Using devise 3.2.4
Using hike 1.2.3
Using multi_json 1.10.1
Using jbuilder 2.1.3
Using jquery-rails 3.1.1
Using bundler 1.6.4
Using tilt 1.4.1
Using sprockets 2.11.0
Using sprockets-rails 2.1.3
Using rails 4.1.4
Using rdoc 4.1.1
Using sass-rails 4.0.3
Using sdoc 0.4.0
Using spring 1.1.3
Using sqlite3 1.3.9
Using turbolinks 2.2.2
Using uglifier 2.5.3
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.
leigh@leigh-VirtualBox:~/Projects/dev01$ rails generate devise:install
Could not find generator devise:install.
leigh@leigh-VirtualBox:~/Projects/dev01$ 

My Gemfile is:

source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.1.4'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.3'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# See https://github.com/sstephenson/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

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

gem 'bootstrap-sass', '~> 3.2.0.0'
gem 'bootswatch-rails', '~> 3.2.0'

gem 'autoprefixer-rails'

# Use data-confirm-modal to create custom alert modal popups
gem 'data-confirm-modal', github: 'ifad/data-confirm-modal'

# Use devise for user authentication
gem 'devise'
# Use declarative_authorization for user authorisation
gem 'declarative_authorization'

# 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

# Use debugger
# gem 'debugger', group: [:development, :test]

Rails version is:

leigh@leigh-VirtualBox:~/Projects/dev01$ rails -v
Rails 4.1.4
leigh@leigh-VirtualBox:~/Projects/dev01$ 

OS version is:

leigh@leigh-VirtualBox:~/Projects/dev01$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04 LTS
Release:    14.04
Codename:   trusty
leigh@leigh-VirtualBox:~/Projects/dev01$ 

Any ideas as to why the Devise gem won't install after correctly adding it to the Gemfile and running the bundle install?

I did have the server running at one point (rails server) and saw an article stating that attempting to install Devise whilst the server is up could cause strange issues.

I've since tried again with the server down but no difference. I'm sure this is probably happening due to something really simple that I overlooked in the setup, just not sure where else to look.

Any advise or suggestions on where to look next would be great, thanks.

I've done testing using the command below but still received the same error:

leigh@leigh-VirtualBox:~/Projects/dev01$ bundle exec rails g devise:install
Could not find generator devise:install.

The list of installed generators are below and Devise is not listed, how do I get it listed?

leigh@leigh-VirtualBox:~/Projects/dev01$ rails generate
Usage: rails generate GENERATOR [args] [options]

General options:
  -h, [--help]     # Print generator's options and usage
  -p, [--pretend]  # Run but do not make any changes
  -f, [--force]    # Overwrite files that already exist
  -s, [--skip]     # Skip files that already exist
  -q, [--quiet]    # Suppress status output

Please choose a generator below.

Rails:
  assets
  controller
  generator
  helper
  integration_test
  jbuilder
  mailer
  migration
  model
  resource
  scaffold
  scaffold_controller
  task

Coffee:
  coffee:assets

Jquery:
  jquery:install

Js:
  js:assets

TestUnit:
  test_unit:generator
  test_unit:plugin

leigh@leigh-VirtualBox:~/Projects/dev01$

Answer 1

same problem today, I removed the 'spring' out from the Gemfile and it did the trick. or you can turn off your spring first and run rails generate devise:install

Answer 2

OK, I'm still not 100% sure why this worked or what caused the issue in the first place but after running the following commands:

leigh@leigh-VirtualBox:~/Projects/dev01$ gem uninstall devise
Successfully uninstalled devise-3.2.4
leigh@leigh-VirtualBox:~/Projects/dev01$ gem uninstall warden
Successfully uninstalled warden-1.2.3
leigh@leigh-VirtualBox:~/Projects/dev01$ bundle install
Fetching gem metadata from https://rubygems.org/.........
Fetching additional metadata from https://rubygems.org/..
[... text removed ...]
Installing warden 1.2.3
Installing devise 3.2.4
[... text removed ...]
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.
leigh@leigh-VirtualBox:~/Projects/dev01$ rails generate devise:install
      create  config/initializers/devise.rb
      create  config/locales/devise.en.yml

Woo Hoo!!! problem solved. Great way to waste a couple of days :-(