devise Devise & OmniAuth Multiple Providers Add and install the Devise gem
Example
Modify your Gemfile to include the Devise gem:
gem 'devise'
Then update your gems with:
$ bundle install
Run the installers in your project:
$ rails generate devise:install
Then create your Devise model (e.g. User) with:
$ rails generate devise User
you'll need to set up the default URL options for the Devise mailer in environment.rb file config/environments/development.rb:
config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
Devise makes some changes to your database, so you'll need to run the created migrations:
$ rake db:migrate
