validates :name, :presence => true, :length => 1..255, :characters => true
validates :description, :presence => { :on => :create }, :length => 1..255, :characters => true
validates :timestamp, :presence => true
validates :visibility, :inclusion => %w[private public trackable identifiable]
validates :name, :presence => true, :length => 1..255, :characters => true
validates :description, :presence => { :on => :create }, :length => 1..255, :characters => true
validates :timestamp, :presence => true
validates :visibility, :inclusion => %w[private public trackable identifiable]