RESTful Single Sign-On Plugin

Devise no longer responds to JSON out of the box, and for good reason: responding with the resource typically returns way too much information. So if you enable JSON responses, make sure that your resource exposes only the properties it should (more info below).

in config/application.rb add the following: config.to_prepare do DeviseController.respond_to :html, :json end

If your Devise resource is the User model, add something like the following method to app/models/user.rb: def as_json options={} { email: self.email, first_name: self.first_name, last_name: self.last_name, } end This returns only the email, first name, and last name User properties.