adds ancestry column to comments

db/migrate/20150902114558_add_ancestry_to_comments.rb

@@ -0,0 +1,7 @@
+class AddAncestryToComments < ActiveRecord::Migration
+  def change
+    add_column :comments, :ancestry, :string
+
+    add_index :comments, :ancestry
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150830212600) do
+ActiveRecord::Schema.define(version: 20150902114558) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -62,9 +62,6 @@ ActiveRecord::Schema.define(version: 20150830212600) do
     t.text     "body"
     t.string   "subject"
     t.integer  "user_id",                        null: false
-    t.integer  "parent_id"
-    t.integer  "lft"
-    t.integer  "rgt"
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "children_count",     default: 0
@@ -77,8 +74,13 @@ ActiveRecord::Schema.define(version: 20150830212600) do
     t.integer  "cached_votes_up",    default: 0
     t.integer  "cached_votes_down",  default: 0
     t.datetime "confirmed_hide_at"
+    t.string   "ancestry"
+    t.integer  "rgt"
+    t.integer  "lft"
+    t.integer  "parent_id"
   end
 
+  add_index "comments", ["ancestry"], name: "index_comments_on_ancestry", using: :btree
   add_index "comments", ["cached_votes_down"], name: "index_comments_on_cached_votes_down", using: :btree
   add_index "comments", ["cached_votes_total"], name: "index_comments_on_cached_votes_total", using: :btree
   add_index "comments", ["cached_votes_up"], name: "index_comments_on_cached_votes_up", using: :btree