Do not raise an error when destroying a Version with assigned issues.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3668 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/versions_controller.rb

@@ -80,12 +80,14 @@ class VersionsController < ApplicationController
   end
 
   def destroy
+    if @version.fixed_issues.empty?
       @version.destroy
       redirect_to :controller => 'projects', :action => 'settings', :tab => 'versions', :id => @project
-  rescue
+    else
       flash[:error] = l(:notice_unable_delete_version)
       redirect_to :controller => 'projects', :action => 'settings', :tab => 'versions', :id => @project
     end
+  end
   
   def status_by
     respond_to do |format|

app/models/version.rb

@@ -1,5 +1,5 @@
-# redMine - project management software
-# Copyright (C) 2006  Jean-Philippe Lang
+# Redmine - project management software
+# Copyright (C) 2006-2010  Jean-Philippe Lang
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -16,10 +16,9 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 class Version < ActiveRecord::Base
-  before_destroy :check_integrity
   after_update :update_issues_from_sharing_change
   belongs_to :project
-  has_many :fixed_issues, :class_name => 'Issue', :foreign_key => 'fixed_version_id'
+  has_many :fixed_issues, :class_name => 'Issue', :foreign_key => 'fixed_version_id', :dependent => :nullify
   acts_as_customizable
   acts_as_attachable :view_permission => :view_files,
                      :delete_permission => :manage_files
@@ -157,9 +156,6 @@ class Version < ActiveRecord::Base
   end
   
   private
-  def check_integrity
-    raise "Can't delete version" if self.fixed_issues.find(:first)
-  end
 
   # Update the issue's fixed versions. Used if a version's sharing changes.
   def update_issues_from_sharing_change