![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
Tag: Devise/Twitter認証
gem 'devise' gem 'omniauth-twitter'
bundle exec rails g scaffold book title:string author:string summary:text
bundle exec rails g devise:install
bundle exec rails g devise user
class User < ApplicationRecord
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable, :omniauthable
end
class DeviseCreateUsers < ActiveRecord::Migration[5.1]
def change
create_table :users do |t|
## Database authenticatable
t.string :email, null: false, default: ""
t.string :encrypted_password, null: false, default: ""
## Recoverable
t.string :reset_password_token
t.datetime :reset_password_sent_at
## Rememberable
t.datetime :remember_created_at
## Trackable
t.integer :sign_in_count, default: 0, null: false
t.datetime :current_sign_in_at
t.datetime :last_sign_in_at
t.string :current_sign_in_ip
t.string :last_sign_in_ip
## Confirmable
# t.string :confirmation_token
# t.datetime :confirmed_at
# t.datetime :confirmation_sent_at
# t.string :unconfirmed_email # Only if using reconfirmable
## Lockable
# t.integer :failed_attempts, default: 0, null: false # Only if lock strategy is :failed_attempts
# t.string :unlock_token # Only if unlock strategy is :email or :both
# t.datetime :locked_at
t.timestamps null: false
## Twitter認証用
t.string :provider
t.string :uid
t.string :username, default: "anonymous"
end
add_index :users, :email, unique: true
add_index :users, :reset_password_token, unique: true
# add_index :users, :confirmation_token, unique: true
# add_index :users, :unlock_token, unique: true
end
end
bundle exec rails db:migrate
http://127.0.0.1:3000/users/omniauth_callbacks
config.omniauth :twitter, "Consumer Key", "Consumer Secret"
The action 'twitter' could not be found for Devise::OmniauthCallbacksController
bundle exec rails g controller omniauth_callbacks
class OmniauthCallbacksController < Devise::OmniauthCallbacksController
def twitter
@user = User.from_omniauth(request.env["omniauth.auth"].except("extra"))
if @user.persisted?
flash.notice = "ログインしました！"
sign_in_and_redirect @user
else
session["devise.user_attributes"] = @user.attributes
redirect_to new_user_registration_url
end
end
end
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable,
# :confirmable, :lockable, :timeoutable, :omniauthable, omniauth_providers: [:twitter]
:timeoutable, :omniauthable, omniauth_providers: [:twitter]
def self.from_omniauth(auth)
where(provider: auth["provider"], uid: auth["uid"]).first_or_create do |user|
user.provider = auth["provider"]
user.uid = auth["uid"]
user.username = auth["info"]["nickname"]
# user.email = Devise.friendly_token[0,20]
user.email = "#{auth.provider}-#{auth.uid}@example.com"
user.password = Devise.friendly_token[0,20] #これが必要?
end
end
def remember_me
# http://stackoverflow.com/questions/14417201/how-to-automatically-keep-user-remembered-in-devise
true
end
def self.new_with_session(params, session)
if session["devise.user_attributes"]
new(session["devise.user_attributes"], without_protection: true) do |user|
user.attributes = params
user.valid?
end
else
super
end
end
def password_required?
super && provider.blank?
end
def email_required?
super && provider.blank?
end
end
devise_for :users, controllers: { :omniauth_callbacks => "omniauth_callbacks" }
<!DOCTYPE html>
<html>
<head>
<title>Rails5DeviseTwitterDemo</title>
<%= csrf_meta_tags %>
<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
<%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>
</head>
<body>
<header>
<nav>
<% if user_signed_in? %>
<strong<%= link_to current_user.username, pages_show_path %></strong>
<%= link_to 'ログアウト', destroy_user_session_path, method: :delete %>
<% else %>
<%= link_to 'ログイン', user_twitter_omniauth_authorize_path %>
<% end %>
</nav>
</header>
<p class="notice"><%= notice %></p>
<p class="alert"><%= alert %></p>
<%= yield %>
</body>
</html>
bundle exec rails g devise:views
