fixes

app/models/forum_topic.rb

@@ -1,15 +1,17 @@
 class ForumTopic < ActiveRecord::Base
   attr_accessible :title, :original_post_attributes, :as => [:member, :privileged, :contributor, :janitor, :moderator, :admin, :default]
-  attr_accessible :is_sticky, :is_locked, :as => [:admin, :moderator]
+  attr_accessible :is_sticky, :is_locked, :is_deleted, :as => [:admin, :moderator]
   belongs_to :creator, :class_name => "User"
   belongs_to :updater, :class_name => "User"
   has_many :posts, :class_name => "ForumPost", :order => "forum_posts.id asc", :foreign_key => "topic_id", :dependent => :destroy
   has_one :original_post, :class_name => "ForumPost", :order => "forum_posts.id asc", :foreign_key => "topic_id"
   before_validation :initialize_creator, :on => :create
   before_validation :initialize_updater
+  before_validation :initialize_is_deleted, :on => :create
   validates_presence_of :title, :creator_id
   validates_associated :original_post
   scope :title_matches, lambda {|title| where(["text_index @@ plainto_tsquery(?)", title])}
+  scope :active, where("is_deleted = false")
   search_methods :title_matches
   accepts_nested_attributes_for :original_post
     
@@ -17,6 +19,10 @@ class ForumTopic < ActiveRecord::Base
     creator_id == user.id || user.is_moderator?
   end
 
+  def initialize_is_deleted
+    self.is_deleted = false if is_deleted.nil?
+  end
+
   def initialize_creator
     self.creator_id = CurrentUser.id
   end