bundle install
以下の行を Gemfile に追加
gem 'devise'
そして、bundle install を実行。
$ rails g devise:install
と叩く。
すると以下のようなメッセージが表示されるので、それを参考に設定を行う。
===============================================================================
Some setup you must do manually if you haven't yet:
1. Ensure you have defined default url options in your environments files. Here
is an example of default_url_options appropriate for a development environment
in config/environments/development.rb:
config.action_mailer.default_url_options = { :host => 'localhost:3000' }
In production, :host should be set to the actual host of your application.
2. Ensure you have defined root_url to *something* in your config/routes.rb.
For example:
root :to => "home#index"
3. Ensure you have flash messages in app/views/layouts/application.html.erb.
For example:
<p class="notice"><%= notice %></p>
<p class="alert"><%= alert %></p>
4. If you are deploying Rails 3.1+ on Heroku, you may want to set:
config.assets.initialize_on_precompile = false
On config/application.rb forcing your application to not access the DB
or load models when precompiling your assets.
5. You can copy Devise views (for customization) to your app by running:
rails g devise:views
===============================================================================
User モデルを作成する
以下のように generator を実行。
$ rails g devise User
invoke active_record
create db/migrate/20130321033334_devise_create_users.rb
create app/models/user.rb
invoke test_unit
create test/unit/user_test.rb
create test/fixtures/users.yml
insert app/models/user.rb
route devise_for :users
続けて migrate を実行。
$ rake db:migrate
routes を確認
$ rake routes
new_user_session GET /users/sign_in(.:format) devise/sessions#new
user_session POST /users/sign_in(.:format) devise/sessions#create
destroy_user_session DELETE /users/sign_out(.:format) devise/sessions#destroy
user_password POST /users/password(.:format) devise/passwords#create
new_user_password GET /users/password/new(.:format) devise/passwords#new
edit_user_password GET /users/password/edit(.:format) devise/passwords#edit
PUT /users/password(.:format) devise/passwords#update
cancel_user_registration GET /users/cancel(.:format) devise/registrations#cancel
user_registration POST /users(.:format) devise/registrations#create
new_user_registration GET /users/sign_up(.:format) devise/registrations#new
edit_user_registration GET /users/edit(.:format) devise/registrations#edit
PUT /users(.:format) devise/registrations#update
DELETE /users(.:format) devise/registrations#destroy
root / home#index
home_index GET /home/index(.:format) home#index
posts GET /posts(.:format) posts#index
POST /posts(.:format) posts#create
new_post GET /posts/new(.:format) posts#new
edit_post GET /posts/:id/edit(.:format) posts#edit
post GET /posts/:id(.:format) posts#show
PUT /posts/:id(.:format) posts#update
DELETE /posts/:id(.:format) posts#destroy
/users/sign_up にアクセスしてみる
rails s でサーバを起動し、/users/sign_up にアクセスしてみてサインアップ画面が表示されればOK。
sign_up, sign_in, sign_out のリンクを layout に追加
app/views/layouts/application.html.erb に以下のコードを追加
<div id='user_nav'>
<% if user_signed_in? %>
Signed in as <%= current_user.email %>. <%= link_to "Sign out", destroy_user_session_path, :method => :delete %>
<% else %>
<%= link_to "Sign up", new_user_registration_path %> or
<%= link_to "Sign in", new_user_session_path %>
<% end %>
</div>
Rails casts (Ascii casts) に掲載されている例では :method => :delete が無く、devise 2.2.3 では正しく動作しなかった。
viewのカスタマイズ
$ rails g devise:views
invoke Devise::Generators::SharedViewsGenerator
create app/views/devise/shared
create app/views/devise/shared/_links.erb
invoke form_for
create app/views/devise/confirmations
create app/views/devise/confirmations/new.html.erb
create app/views/devise/passwords
create app/views/devise/passwords/edit.html.erb
create app/views/devise/passwords/new.html.erb
create app/views/devise/registrations
create app/views/devise/registrations/edit.html.erb
create app/views/devise/registrations/new.html.erb
create app/views/devise/sessions
create app/views/devise/sessions/new.html.erb
create app/views/devise/unlocks
create app/views/devise/unlocks/new.html.erb
invoke erb
create app/views/devise/mailer
create app/views/devise/mailer/confirmation_instructions.html.erb
create app/views/devise/mailer/reset_password_instructions.html.erb
create app/views/devise/mailer/unlock_instructions.html.erb