added some validations for lists and messages

git-svn-id: http://redmine.rubyforge.org/svn/branches/work@272 e93f8b46-1217-0410-a6f0-8f06a7374b81

mailing_lists/app/models/mailing_list.rb

@@ -22,7 +22,7 @@ class MailingList < ActiveRecord::Base
   belongs_to :admin, :class_name => 'User', :foreign_key => 'admin_id'
   has_many :messages, :class_name => 'MailingMessage', :dependent => :delete_all
       
-  validates_presence_of :name, :description, :password
+  validates_presence_of :name, :description, :password, :admin_id
   validates_confirmation_of :password
   validates_format_of :name, :with => /^[a-z0-9\-]+$/i
   

mailing_lists/app/models/mailing_message.rb

@@ -18,4 +18,6 @@
 class MailingMessage < ActiveRecord::Base
   belongs_to :mailing_list
   acts_as_tree :order => 'sent_on'
+  
+  validates_uniqueness_of :messageid, :scope => :mailing_list_id
 end