Add paper_trail to Entity

app/models/entity.rb

@@ -8,6 +8,8 @@ class Entity < ActiveRecord::Base
   # self.default_timezone = :local
   # self.skip_time_zone_conversion_for_attributes = [:created_at, :updated_at]
 
+  has_paper_trail :ignore => [:link_count, :delta]
+
   has_many :aliases, inverse_of: :entity, dependent: :destroy
   has_many :images, inverse_of: :entity, dependent: :destroy
   has_many :list_entities, inverse_of: :entity, dependent: :destroy

spec/models/entity_spec.rb

@@ -277,4 +277,24 @@ def without_ids(array)
       end
     end
   end # end Extension Attributes Functions
+
+  describe 'Using paper_trail for versision' do
+    with_versioning do
+      it 'creates version after updating name' do
+        human = create(:person)
+        expect(human.versions.size).to eq 1
+        expect { human.update(name: 'Emiliano Zapata') }.to change { human.versions.size }.by(1)
+      end
+
+      it 'does not create a version after changing updated_at' do
+        human = create(:person)
+        expect { human.touch }.not_to change { human.versions.size }
+      end
+
+      it 'does not create a version after changing link_count' do
+        human = create(:person)
+        expect { human.update(link_count: 10) }.not_to change { human.versions.size }
+      end
+    end
+  end
 end

spec/models/extension_definition_spec.rb

@@ -2,13 +2,13 @@
 
 describe ExtensionDefinition, type: :model  do
   it { should have_many(:extension_records) }
-  it { should have_many(:entities) } 
-  
+  it { should have_many(:entities) }
+
   it 'should have ID constants' do
     expect(ExtensionDefinition::PERSON_ID).to eql 1
     expect(ExtensionDefinition::ORG_ID).to eql 2
   end
-  
+
   describe 'person types & org types' do
     it 'returns all person types' do
       expect(ExtensionDefinition).to receive(:where).with(parent_id: 1).once.and_return(double(order: {name: :asc}))

spec/models/extension_record_spec.rb

@@ -0,0 +1,6 @@
+require 'rails_helper'
+
+describe ExtensionRecord, type: :model do
+  it { should belong_to(:entity) }
+  it { should belong_to(:extension_definition) }
+end