Rails Gem::LoadError in UsersController#new - ruby-on-rails

Question

New to Ruby on Rails and having a problem when following Michael Hartl's tutorial.I'm using Rails 3.2.2 with Ruby 1.9.3. The issue looks very similar to another question that was raised but was unanswered:
Rails Error NoMethodError in UsersController#show error
I get the following error when attempting to add a new user via /signup
Gem::LoadError in UsersController#new
bcrypt-ruby is not part of the bundle. Add it to Gemfile.
Reloading the page gives the error:
NoMethodError in UsersController#new
undefined method `key?' for nil:NilClass
The problem seems to be related to the inclusion of the bcrypt-ruby gem, and the usage of the has_secure_password method in user.rb . Removing the call to has_secure_password in user.rb gets rid of the error and it goes to the signup page successfully.
user.rb:
# == Schema Information
#
# Table name: users
#
# id :integer not null, primary key
# name :string(255)
# email :string(255)
# created_at :datetime not null
# updated_at :datetime not null
# password_digest :string(255)
#
class User < ActiveRecord::Base
attr_accessible :name, :email, :password, :password_confirmation
has_secure_password
validates :name, presence: true, length: { maximum: 50 }
valid_email_regex = /\A[\w+\-.]+#[a-z\d\-.]+\.[a-z]+\z/i
validates :email, presence: true,
format: { with: valid_email_regex },
uniqueness: { case_sensitive: false }
validates :password, length: { minimum: 6}
end
users_controller.rb:
class UsersController < ApplicationController
def new
#user = User.new
end
def create
#user = User.new(params[:user])
if #user.save
flash[:success] = "Welcome!"
redirect_to #user
else
render 'new'
end
end
end
However, I cant find anything wrong with the inclusion of the bcrypt-ruby gem. In the Gemfile I have:
gem 'bcrypt-ruby', '3.0.1'
and the gem has also been generated in Gemfile.lock :
DEPENDENCIES
annotate (~> 2.4.1.beta)
bcrypt-ruby (= 3.0.1)
I've also added password_digest to the database via migration:
class AddPasswordDigestToUsers < ActiveRecord::Migration
def change
add_column :users, :password_digest, :string
end
end
Any ideas ?

Answer 1

I'm going through the same tutorial and encountered the exact same problem.
My solution was to restart the web server. After installing the gem, I think the web server needs to be restarted so it is loaded.
Justin

Answer 2

Did you tried the 'bundle update' command, usually the bundler will take care of gems if you specified in the Gemfile. If you want to check the gem dependency please check http://rubygems.org/gems.
And if you are using windows(I know its strange- but some of our app works in windows only) there is some tricks to install bcrypt
Steps to install bcrypt.
1 Download Devkit and extract
you can download it from here http://rubyinstaller.org/downloads/
2 Place devkit it your jruby folder (in my case C:\applications\jruby\devkit)
3 You need to install ruby as well either 1.8.7 or 1.9(some times needs a system restart)
4 CD into devkit directory
5 Run ruby dk.rb init
6 Open config.yml and make sure that both your jruby installtion is listed. If not, ADD them. Save and close config.yml after you're done.
example:- C:/applications/jruby
7 Run ruby dk.rb install
8 jruby -S gem install bcrypt-ruby

Answer 3

Restarting the web server fixed it for me (had spork running in the background to speed up the running of the tests)