Rails 3 - Use only OpenID authentication

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I want to add authentication to my Ruby on Rails 3 app, but I only need users to be able to authenticate using their Google accounts, because I'm making it a hosted app for the Chrome Webstore, so I think OpenID would work well for this. I want to have some custom fields in the user database to store user-specific data. What should I use for this? I want users to be able to sign up only with OpenID. Thanks.

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megas On BEST ANSWER

You should try omniauth gem, it uses not only Google OpenID. Omniauth takes user's data from provider and pass to your application which is you can amplify

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Paul Alexander On

I've been using authlogic and authlogic-oid add-on to handle this.

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jakeonrails On

You could try the devise_openid_authenticatable gem. I haven't used it myself but it looks like it would do what you want using the Devise authentication gem, which is what I use on all of my Rails projects.