• Ruby on Rails Quickstart
• Sample projects
• API Reference

Add the following line to your Gemfile:

gem 'omniauth-auth0'

If you're using this strategy with Rails, also add the following for CSRF protection:

gem 'omniauth-rails_csrf_protection'

Then install:

$ bundle install

See our contributing guide for information on local installation for development.

Adding the SDK to your Rails app requires a few steps:

• Create the configuration file
• Create the initializer
• Create the callback controller
• Add routes

Create the file ./config/auth0.yml within your application directory with the following content:

development:
  auth0_domain: <YOUR_DOMAIN>
  auth0_client_id: <YOUR_CLIENT_ID>
  auth0_client_secret: <YOUR AUTH0 CLIENT SECRET>

Create a new Ruby file in ./config/initializers/auth0.rb to configure the OmniAuth middleware:

AUTH0_CONFIG = Rails.application.config_for(:auth0)

Rails.application.config.middleware.use OmniAuth::Builder do
  provider(
    :auth0,
    AUTH0_CONFIG['auth0_client_id'],
    AUTH0_CONFIG['auth0_client_secret'],
    AUTH0_CONFIG['auth0_domain'],
    callback_path: '/auth/auth0/callback',
    authorize_params: {
      scope: 'openid profile'
    }
  )
end

Create a new controller ./app/controllers/auth0_controller.rb to handle the callback from Auth0.

You can also run rails generate controller auth0 callback failure logout --skip-assets --skip-helper --skip-routes --skip-template-engine to scaffold this controller for you.

# ./app/controllers/auth0_controller.rb
class Auth0Controller < ApplicationController
  def callback
    # OmniAuth stores the information returned from Auth0 and the IdP in request.env['omniauth.auth'].
    # In this code, you will pull the raw_info supplied from the id_token and assign it to the session.
    # Refer to https://github.com/auth0/omniauth-auth0/blob/master/EXAMPLES.md#example-of-the-resulting-authentication-hash for complete information on 'omniauth.auth' contents.
    auth_info = request.env['omniauth.auth']
    session[:userinfo] = auth_info['extra']['raw_info']

    # Redirect to the URL you want after successful auth
    redirect_to '/dashboard'
  end

  def failure
    # Handles failed authentication -- Show a failure page (you can also handle with a redirect)
    @error_msg = request.params['message']
  end

  def logout
    # you will finish this in a later step
  end
end

Finally, add the following routes to your ./config/routes.rb file:

Rails.application.routes.draw do
  # ..
  get '/auth/auth0/callback' => 'auth0#callback'
  get '/auth/failure' => 'auth0#failure'
  get '/auth/logout' => 'auth0#logout'
end

To redirect your users to Auth0 for authentication, redirect your users to the /auth/auth0 endpoint of your app. One way to do this is to use a link or button on a page:

<%= button_to 'Login', '/auth/auth0', method: :post %>

We appreciate feedback and contribution to this repo! Before you get started, please see the following:

• Auth0's general contribution guidelines
• Auth0's code of conduct guidelines
• This repo's contribution guide

To provide feedback or report a bug, please raise an issue on our issue tracker.

Please do not report security vulnerabilities on the public GitHub issue tracker. The Responsible Disclosure Program details the procedure for disclosing security issues.

Auth0 is an easy to implement, adaptable authentication and authorization platform. To learn more checkout Why Auth0?

This project is licensed under the MIT license. See the LICENSE file for more info.