#209 Devise (revised)

Jul 06, 2012 | 8 minutes | Plugins, Authentication

Devise is one of the most popular authentication plugins for Rails. Here I show how to set it up with a User model and configure the modules, views, routes, and more.

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          terminal
        
rails g devise:install
rails g devise user
rake db:migrate
rails g devise:views
rails g migration add_username_to_users username

          Gemfile
        
gem 'devise'

          config/environments/development.rb
        
# and don't forget the other environments
config.action_mailer.default_url_options = { :host => 'localhost:3000' }

          layouts/application.html.erb
        
<% if user_signed_in? %>
  Logged in as <strong><%= current_user.email %></strong>.
  <%= link_to 'Edit profile', edit_user_registration_path %> |
  <%= link_to "Logout", destroy_user_session_path, method: :delete %>
<% else %>
  <%= link_to "Sign up", new_user_registration_path %> |
  <%= link_to "Login", new_user_session_path %>
<% end %>

          config/routes.rb
        
devise_for :users, path_names: {sign_in: "login", sign_out: "logout"}

          config/initializers/devise.rb
        
config.authentication_keys = [ :username ]
config.case_insensitive_keys = [ :username ]
config.strip_whitespace_keys = [ :username ]

          articles_controller.rb
        
before_filter :authenticate_user!, except: [:index, :show]