validates_presence_of :title, :body, :sent_on, :sender, :recipient
validates_length_of :title, :within => 1..255
validates_inclusion_of :message_read, :in => [ true, false ]
- validates_associated :sender, :recipient
validates_as_utf8 :title
+ attr_accessible :title, :body
+
def digest
md5 = Digest::MD5.new
md5 << from_user_id.to_s