X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/8181cb4bf77548088f959562f24be17f8ec053a3..c3bf919e3e8d20503c1ef39f87d674d1adf31553:/app/models/diary_comment.rb

diff --git a/app/models/diary_comment.rb b/app/models/diary_comment.rb
index aaf48be4f..0013606d0 100644
--- a/app/models/diary_comment.rb
+++ b/app/models/diary_comment.rb
@@ -4,4 +4,13 @@ class DiaryComment < ActiveRecord::Base
 
   validates_presence_of :body
   validates_associated :diary_entry
+
+  def digest
+    md5 = Digest::MD5.new
+    md5 << diary_entry_id.to_s
+    md5 << user_id.to_s
+    md5 << created_at.xmlschema
+    md5 << body
+    md5.hexdigest
+  end
 end