private_post.rb in thredded-0.6.2

- old
+ new

@@ -13,10 +13,11 @@
     belongs_to :user_detail,
                inverse_of:  :private_posts,
                primary_key: :user_id,
                foreign_key: :user_id
 
+    after_commit :update_parent_last_user_and_timestamp, on: [:create, :destroy]
     after_commit :notify_users, on: [:create]
 
     # @param [Integer] per_page
     def page(per_page: self.class.default_per_page)
       1 + postable.posts.where(postable.posts.arel_table[:id].lt(id)).count / per_page
@@ -35,10 +36,22 @@
       DbTextSearch::CaseInsensitive
         .new(postable.users, Thredded.user_name_column)
         .in(user_names)
     end
 
+    private
+
     def notify_users
       Thredded::NotifyPrivateTopicUsersJob.perform_later(id)
+    end
+
+    def update_parent_last_user_and_timestamp
+      return if postable.destroyed?
+      last_post = if destroyed?
+                    postable.posts.order_oldest_first.select(:user_id, :updated_at).last
+                  else
+                    self
+                  end
+      postable.update_columns(last_user_id: last_post.user_id, updated_at: last_post.updated_at)
     end
   end
 end