From df9ea24136059b502d156cb69c8bb2b9b6d952e1 Mon Sep 17 00:00:00 2001
From: Jean-Philippe Lang <jp_lang@yahoo.fr>
Date: Thu, 23 Dec 2010 14:58:52 +0000
Subject: [PATCH] Makes Version#start_date return the minimum start_date of its
 issues.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4574 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 app/models/project.rb        | 2 +-
 app/models/version.rb        | 5 ++---
 lib/redmine/helpers/gantt.rb | 2 +-
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/app/models/project.rb b/app/models/project.rb
index 355ae3a4c..4af77d1d9 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -454,7 +454,7 @@ class Project < ActiveRecord::Base
     [
      issues.minimum('start_date'),
      shared_versions.collect(&:effective_date),
-     shared_versions.collect {|v| v.fixed_issues.minimum('start_date')}
+     shared_versions.collect(&:start_date)
     ].flatten.compact.min
   end
 
diff --git a/app/models/version.rb b/app/models/version.rb
index 95e6ad5f6..8b01816a7 100644
--- a/app/models/version.rb
+++ b/app/models/version.rb
@@ -43,7 +43,7 @@ class Version < ActiveRecord::Base
   end
   
   def start_date
-    effective_date
+    @start_date ||= fixed_issues.minimum('start_date')
   end
   
   def due_date
@@ -77,8 +77,7 @@ class Version < ActiveRecord::Base
   def behind_schedule?
     if completed_pourcent == 100
       return false
-    elsif due_date && fixed_issues.present? && fixed_issues.minimum('start_date') # TODO: should use #start_date but that method is wrong...
-      start_date = fixed_issues.minimum('start_date')
+    elsif due_date && start_date
       done_date = start_date + ((due_date - start_date+1)* completed_pourcent/100).floor
       return done_date <= Date.today
     else
diff --git a/lib/redmine/helpers/gantt.rb b/lib/redmine/helpers/gantt.rb
index af0fc4c72..4954434ce 100644
--- a/lib/redmine/helpers/gantt.rb
+++ b/lib/redmine/helpers/gantt.rb
@@ -319,7 +319,7 @@ module Redmine
           options[:zoom] ||= 1
           options[:g_width] ||= (self.date_to - self.date_from + 1) * options[:zoom]
           
-          coords = coordinates(version.fixed_issues.minimum('start_date'), version.due_date, version.completed_pourcent, options[:zoom])
+          coords = coordinates(version.start_date, version.due_date, version.completed_pourcent, options[:zoom])
           label = "#{h version } #{h version.completed_pourcent.to_i.to_s}%"
           label = h("#{version.project} -") + label unless @project && @project == version.project