How do I implement OmniAuth in a Rails application?

How do I implement OmniAuth in a Rails application?

To implement OmniAuth in a Rails app, first add the omniauth gem to your Gemfile and run bundle install.

What configuration do I need for OmniAuth?

You'll need to create an initializer file, typically in config/initializers/omniauth.rb, to set up your providers.

Can you give me an example of a provider configuration?

Sure! For example, for GitHub, you would add: OmniAuth.config.logger = Rails.logger and Rails.application.config.middleware.use OmniAuth::Builder do followed by provider :github, 'CLIENT_ID', 'CLIENT_SECRET'.

How do I handle the callback from the provider?

You need to define a route in your routes.rb file and create a controller action to handle the callback and create a session.