Keep track of who deletes forum post/topic/comment

Previously it would look like the creator of it was the one who
deleted/undeleted it, even if it was someone else.

app/controllers/forum_topics_controller.rb

@@ -51,7 +51,7 @@ class ForumTopicsController < ApplicationController
   def destroy
     @forum_topic = ForumTopic.find(params[:id])
     check_privilege(@forum_topic)
-    @forum_topic.update_column(:is_deleted, true)
+    @forum_topic.delete!
     flash[:notice] = "Topic deleted"
     respond_with(@forum_topic)
   end
@@ -59,7 +59,7 @@ class ForumTopicsController < ApplicationController
   def undelete
     @forum_topic = ForumTopic.find(params[:id])
     check_privilege(@forum_topic)
-    @forum_topic.update_column(:is_deleted, false)
+    @forum_topic.undelete!
     flash[:notice] = "Topic undeleted"
     respond_with(@forum_topic)
   end

app/models/comment.rb

@@ -173,7 +173,7 @@ class Comment < ActiveRecord::Base
   end
 
   def delete!
-    update_attribute(:is_deleted, true)
+    update_attributes(:is_deleted => true)
   end
 end
 

app/models/forum_post.rb

@@ -128,12 +128,12 @@ class ForumPost < ActiveRecord::Base
   end
 
   def delete!
-    update_attribute(:is_deleted, true)
+    update_attributes(:is_deleted => true)
     update_topic_updated_at_on_delete
   end
 
   def undelete!
-    update_attribute(:is_deleted, false)
+    update_attributes(:is_deleted => false)
     update_topic_updated_at_on_undelete
   end
 

app/models/forum_topic.rb

@@ -151,4 +151,12 @@ class ForumTopic < ActiveRecord::Base
     topic.update_attribute(:response_count, topic.response_count + self.posts.length)
     self.update_columns(:response_count => 0, :is_deleted => true)
   end
+
+  def delete!
+    update_attributes(:is_deleted => true)
+  end
+
+  def undelete!
+    update_attributes(:is_deleted => false)
+  end
 end