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Screencast: OmniAuth Teil 2
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[bash] bundle update rails g controller registrations rails g devise:views [/bash]
[ruby] # Gemfile gem ‘mongrel’, ‘1.2.0.pre2’
# config/initializers/omniauth.rbb require ‘openid/store/filesystem’ Rails.application.config.middleware.use OmniAuth::Builder do provider :twitter, ‘CONSUMER_KEY’, ‘CONSUMER_SECRET’ provider :open_id, OpenID::Store::Filesystem.new(‘/tmp’) end
# authentications_controller.rb def create omniauth = request.env[“omniauth.auth”] authentication = Authentication.find_by_provider_and_uid(omniauth[‘provider’], omniauth[‘uid’]) if authentication flash[:notice] = “Signed in successfully.” sign_in_and_redirect(:user, authentication.user) elsif current_user current_user.authentications.create!(:provider => omniauth[‘provider’], :uid => omniauth[‘uid’]) flash[:notice] = “Authentication successful.” redirect_to authentications_url else user = User.new user.apply_omniauth(omniauth) if user.save flash[:notice] = “Signed in successfully.” sign_in_and_redirect(:user, user) else session[:omniauth] = omniauth.except(‘extra’) redirect_to new_user_registration_url end end end
# models/user.rb def apply_omniauth(omniauth) self.email = omniauth[‘user_info’][‘email’] if email.blank? authentications.build(:provider => omniauth[‘provider’], :uid => omniauth[‘uid’]) end
def password_required? (authentications.empty? || !password.blank?) && super end
# routes.rb devise_for :users, :controllers => {:registrations => ‘registrations’}
# registrations_controller.rb class RegistrationsController < Devise::RegistrationsController def create super session[:omniauth] = nil unless @user.new_record? end private def build_resource(*args) super if session[:omniauth] @user.apply_omniauth(session[:omniauth]) @user.valid? end end end
# models/authentication.rb def provider_name if provider == ‘open_id’ “OpenID” else provider.titleize end end [/ruby]