Adding paper_trail gem

Gemfile

@@ -52,6 +52,7 @@ gem 'roadie-rails', '~> 1.0.3'
 gem 'figaro'
 gem 'blockenspiel'
 gem 'acts-as-taggable-on', '~> 3.4'
+gem 'paper_trail', '~> 3.0.8'
 
 gem 'foreigner'
 gem 'immigrant'

Gemfile.lock

@@ -362,6 +362,9 @@ GEM
       mini_portile (~> 0.6.0)
     oj (2.1.2)
     orm_adapter (0.5.0)
+    paper_trail (3.0.8)
+      activerecord (>= 3.0, < 5.0)
+      activesupport (>= 3.0, < 5.0)
     paperclip (3.5.4)
       activemodel (>= 3.0.0)
       activesupport (>= 3.0.0)
@@ -589,6 +592,7 @@ DEPENDENCIES
   momentjs-rails
   newrelic_rpm
   oj
+  paper_trail (~> 3.0.8)
   paperclip
   parallel_tests
   pg

db/migrate/20150619020711_create_versions.rb

@@ -0,0 +1,13 @@
+class CreateVersions < ActiveRecord::Migration
+  def change
+    create_table :versions do |t|
+      t.string   :item_type, :null => false
+      t.integer  :item_id,   :null => false
+      t.string   :event,     :null => false
+      t.string   :whodunnit
+      t.text     :object
+      t.datetime :created_at
+    end
+    add_index :versions, [:item_type, :item_id]
+  end
+end

db/schema.rb

@@ -1126,6 +1126,17 @@ ActiveRecord::Schema.define(:version => 20150730160010) do
 
   add_index "variant_overrides", ["variant_id", "hub_id"], :name => "index_variant_overrides_on_variant_id_and_hub_id"
 
+  create_table "versions", :force => true do |t|
+    t.string   "item_type",  :null => false
+    t.integer  "item_id",    :null => false
+    t.string   "event",      :null => false
+    t.string   "whodunnit"
+    t.text     "object"
+    t.datetime "created_at"
+  end
+
+  add_index "versions", ["item_type", "item_id"], :name => "index_versions_on_item_type_and_item_id"
+
   add_foreign_key "adjustment_metadata", "enterprises", name: "adjustment_metadata_enterprise_id_fk"
   add_foreign_key "adjustment_metadata", "spree_adjustments", name: "adjustment_metadata_adjustment_id_fk", column: "adjustment_id", dependent: :delete