Devise_Admin_Create_User_Account

gistfile1.rb

# When you do not want Users to be able to sign up for your site, rather, you want the admin to create the account and send them the login info.

class User < ActiveRecord::Base
  def self.create_new_user(email, password)
    user = User.new({ :email => email, :password => password })
    return user.save
  end
end

# This requires the admin to choose a password, so you could create a an algorithm to create
# a random 10-character string and email it to the user with the invite. The user can change that if they want.