adds field to track former users ids

db/migrate/20170208160130_add_former_users_data_log_to_users.rb

@@ -0,0 +1,5 @@
+class AddFormerUsersDataLogToUsers < ActiveRecord::Migration
+  def change
+    add_column :users, :former_users_data_log, :text, default: ""
+  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: 20170208114548) do
+ActiveRecord::Schema.define(version: 20170208160130) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -751,6 +751,7 @@ ActiveRecord::Schema.define(version: 20170208114548) do
     t.boolean  "official_position_badge",                   default: false
     t.datetime "password_changed_at",                       default: '2016-11-23 10:59:20', null: false
     t.boolean  "created_from_signature",                    default: false
+    t.text     "former_users_data_log",                     default: ""
   end
 
   add_index "users", ["confirmation_token"], name: "index_users_on_confirmation_token", unique: true, using: :btree