Initial release of Discourse

db/migrate/20120514144549_add_reply_count_to_posts.rb

@@ -0,0 +1,13 @@
+class AddReplyCountToPosts < ActiveRecord::Migration
+  def up
+    add_column :posts, :reply_count, :integer, null: false, default: 0
+
+    execute "UPDATE posts
+             SET reply_count = (SELECT count(*) FROM posts AS p2 WHERE p2.reply_to_post_number = posts.post_number)"
+  end
+
+  def down
+    remove_column :posts, :reply_count
+  end
+
+end