One of the more requested features we get for Spree is the ability to combine Spree with an existing application’s model. Currently, Spree does not allow you to do that. With the work we’ve been doing on the
auth-take-two branch for Spree, this will now be possible. All you will need to do is to follow the steps in this short guide and you
can have your application set up with Spree using your custom authentication.
Please submit feedback to the pull request page.