Validates sort_key and sort_order params (#2378).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2171 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/queries_helper.rb

@@ -22,8 +22,8 @@ module QueriesHelper
   end
   
   def column_header(column)
-    column.sortable ? sort_header_tag(column.sortable, :caption => column.caption,
-                                                       :default_order => column.default_order) : 
+    column.sortable ? sort_header_tag(column.name.to_s, :caption => column.caption,
+                                                        :default_order => column.default_order) : 
                       content_tag('th', column.caption)
   end