sites

class Site
  include Mongoid::Document
  include Mongoid::Timestamps # adds created_at and updated_at fields

  # field <name>, :type => <type>, :default => <value>
  field :name,    :type => String
  field :url,     :type => String
  
  embedded_in :sponsor, :inverse_of => :sites

  # You can define indexes on documents using the index macro:
  # index :field <, :unique => true>

  # You can create a composite key in mongoid to replace the default id using the key macro:
  # key :field <, :another_field, :one_more ....>
  key :url
  validates_presence_of :name
  validates_uniqueness_of :url
end

sponsors

class Sponsor
  include Mongoid::Document
  include Mongoid::Timestamps # adds created_at and updated_at fields

  # field <name>, :type => <type>, :default => <value>
  field :name,    :type => String
  field :url,     :type => String

  # You can define indexes on documents using the index macro:
  # index :field <, :unique => true>

  #index :name <, :unique => true>
  # You can create a composite key in mongoid to replace the default id using the key macro:
  # key :field <, :another_field, :one_more ....>

  index :name
  index :url
  embeds_many :sites
  
  accepts_nested_attributes_for :sites, :reject_if => lambda {|attrs| attrs["name"].blank? }

end