Fixed 10335 Error in journalizing an issue with longtext custom fields (Postgresql)

git-svn-id: http://redmine.rubyforge.org/svn/trunk@477 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/journal_detail.rb

@@ -17,4 +17,9 @@
 
 class JournalDetail < ActiveRecord::Base
   belongs_to :journal
+  
+  def before_save
+    self.value = value[0..254] if value
+    self.old_value = old_value[0..254] if old_value
+  end
 end