ECF-410 Fix paper trail audit schema datatype (#176)

* fix audit schema

* add default uuid to appease rubocop

db/migrate/20210323180540_change_item_id_type_to_uuid.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+class ChangeItemIdTypeToUuid < ActiveRecord::Migration[6.1]
+  def change
+    remove_column :versions, :item_id, :bigint
+    remove_index :versions, column: %i[item_type item_id], if_exists: true
+    add_column :versions, :item_id, :uuid, default: "gen_random_uuid()", null: false
+    add_index :versions, %i[item_type item_id]
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_03_19_153015) do
+ActiveRecord::Schema.define(version: 2021_03_23_180540) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
@@ -285,12 +285,12 @@
 
   create_table "versions", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.string "item_type", null: false
-    t.bigint "item_id", null: false
     t.string "event", null: false
     t.string "whodunnit"
     t.json "object"
     t.json "object_changes"
     t.datetime "created_at"
+    t.uuid "item_id", default: -> { "gen_random_uuid()" }, null: false
     t.index ["item_type", "item_id"], name: "index_versions_on_item_type_and_item_id"
   end