Add omniauth login to Rails Application via Devise. Support follwing provider:

• Facebook
• Twitter
• Github
• Google
• Line

Add this line to your application's Gemfile:

gem 'devise_social_login'

And then execute:

$ bundle

Or install it yourself as:

$ gem install devise_social_login

1. Add omniauth_callbacks key to the route setting:

   # config/routes.rb
   
   devise_for :users, controllers: { omniauth_callbacks: 'devise_social_login/omniauth_callbacks' }

2. Add provider settings to devise:

   # config/initializer/devise.rb
   
   ...
   config.omniauth :facebook, ENV['FACEBOOK_APP_ID'], ENV['FACEBOOK_APP_SECRET'], scope: 'email', callback_url: 'http://localhost:3000/users/auth/facebook/callback'
   config.omniauth :twitter, ENV['TWITTER_APP_ID'], ENV['TWITTER_APP_SECRET']
   ...

Contribution directions go here.

The gem is available as open source under the terms of the MIT License.