heartcombo--devise/test/rails_app/lib/shared_user.rb

module SharedUser
  extend ActiveSupport::Concern

  included do
    devise :database_authenticatable, :confirmable, :lockable, :recoverable,
           :registerable, :rememberable, :timeoutable, :token_authenticatable,
           :trackable, :validatable, :omniauthable

    attr_accessor :other_key
    attr_accessible :username, :email, :password, :password_confirmation, :remember_me

    # They need to be included after Devise is called.
    extend ExtendMethods
  end

  module ExtendMethods
    def new_with_session(params, session)
      super.tap do |user|
        if data = session["devise.facebook_data"]
          user.email = data["email"]
          user.confirmed_at = Time.now
        end
      end
    end
  end
end