How can I implement OmniAuth for advanced authentication in my Rails app?

How can I implement OmniAuth for advanced authentication in my Rails app?

To implement OmniAuth for advanced authentication, you first need to add the OmniAuth gem to your Gemfile.

What are the steps to configure it for multiple providers?

You need to create an initializer file, set up the providers in that file, and configure the callback URLs.

Can you give me an example of how to set up GitHub and Google as providers?

Sure! In your initializer, you would add:

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :github, 'GITHUB_CLIENT_ID', 'GITHUB_CLIENT_SECRET'
  provider :google_oauth2, 'GOOGLE_CLIENT_ID', 'GOOGLE_CLIENT_SECRET'
end

What should I do after setting up the providers?

After setting up the providers, you need to handle the callback in your controller and manage user sessions.