Sort issues by scheduled versions first then unscheduled versions.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10151 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/version.rb

@@ -186,9 +186,11 @@ class Version < ActiveRecord::Base
 
   def self.fields_for_order_statement(table=nil)
     table ||= table_name
-    %w(effective_date name).map {|field| "#{table}.#{field}"}
+    ["(CASE WHEN #{table}.effective_date IS NULL THEN 1 ELSE 0 END)", "#{table}.effective_date", "#{table}.name", "#{table}.id"]
   end
 
+  scope :sorted, order(fields_for_order_statement)
+
   # Returns the sharings that +user+ can set the version to
   def allowed_sharings(user = User.current)
     VERSION_SHARINGS.select do |s|