X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/1f8a68371ad34594cce4aadf5fef229588fd4ddc..56df4f3813a12a56d9352e5439423de78ed0c7b7:/app/models/message.rb

diff --git a/app/models/message.rb b/app/models/message.rb
index 464c55028..053c7a4c0 100644
--- a/app/models/message.rb
+++ b/app/models/message.rb
@@ -7,6 +7,15 @@ class Message < ActiveRecord::Base
   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
+
+  def digest
+    md5 = Digest::MD5.new
+    md5 << from_user_id.to_s
+    md5 << to_user_id.to_s
+    md5 << sent_on.xmlschema
+    md5 << title
+    md5 << body
+    md5.hexdigest
+  end
 end