Backported r3354 from trunk.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/0.9-stable@3381 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/project.rb

@@ -51,7 +51,7 @@ class Project < ActiveRecord::Base
                           :join_table => "#{table_name_prefix}custom_fields_projects#{table_name_suffix}",
                           :association_foreign_key => 'custom_field_id'
                           
-  acts_as_nested_set :order => 'name', :dependent => :destroy
+  acts_as_nested_set :order => 'name'
   acts_as_attachable :view_permission => :view_files,
                      :delete_permission => :manage_files
 
@@ -74,7 +74,7 @@ class Project < ActiveRecord::Base
   # reserved words
   validates_exclusion_of :identifier, :in => %w( new )
 
-  before_destroy :delete_all_members
+  before_destroy :delete_all_members, :destroy_children
 
   named_scope :has_module, lambda { |mod| { :conditions => ["#{Project.table_name}.id IN (SELECT em.project_id FROM #{EnabledModule.table_name} em WHERE em.name=?)", mod.to_s] } }
   named_scope :active, { :conditions => "#{Project.table_name}.status = #{STATUS_ACTIVE}"}
@@ -499,6 +499,13 @@ class Project < ActiveRecord::Base
   
   private
   
+  # Destroys children before destroying self
+  def destroy_children
+    children.each do |child|
+      child.destroy
+    end
+  end
+  
   # Copies wiki from +project+
   def copy_wiki(project)
     # Check that the source project has a wiki first