gistfile1.txt

class Authorization

  include Mongoid::Document
  include Mongoid::Timestamps

  attr_protected :_id

  field :provider, :type => String
  field :uid, :type => String
  field :token, :type => String
  field :secret, :type => String
  field :url, :type => String
  field :created_at, :type => DateTime

  referenced_in :user
  
  validates_presence_of :user, :provider, :uid, :token, :secret
  validate :existence

  protected

  def existence
    if Authorization.find( :first, :conditions => { :uid => uid, :provider => provider } )
      errors.add( :base, "There's already an account registered with this #{ provider.capitalize } ID")
    end
  end

end

#############

class User

  include Mongoid::Document
  include Mongoid::Timestamps

  attr_protected :_id

  accepts_nested_attributes_for :authentications

  field :subdomain, :type => String, :index => true
  field :email, :type => String, :index => true
  field :nickname, :type => String
  field :given_name, :type => String
  field :family_name, :type => String
  field :location, :type => String, :index => true
  field :url, :type => String
  field :birthday, :type => Date
  field :created_at, :type => DateTime, :index => true
  field :updated_at, :type => DateTime, :index => true
  
  validates_presence_of :nickname, :email, :subdomain, :authorizations
  validates_uniqueness_of :nickname, :email, :subdomain
  validates_associated :authorizations
  
  references_many :authorizations, :dependent => :delete

end