MAGETWO-44113: Creating Ratings in the Frontend (not available after Magento installation)

 - Added cache skipping after rating entity saving

Author: Ievgen Sentiabov

app/code/Magento/Review/Model/Rating.php

@@ -5,6 +5,9 @@
  */
 namespace Magento\Review\Model;
 
+use Magento\Framework\DataObject\IdentityInterface;
+use Magento\Store\Model\Store;
+
 /**
  * Rating model
  *
@@ -18,7 +21,7 @@
  *
  * @author      Magento Core Team <core@magentocommerce.com>
  */
-class Rating extends \Magento\Framework\Model\AbstractModel
+class Rating extends \Magento\Framework\Model\AbstractModel implements IdentityInterface
 {
     /**
      * rating entity codes
@@ -161,4 +164,15 @@ public function getEntityIdByCode($entityCode)
     {
         return $this->getResource()->getEntityIdByCode($entityCode);
     }
+
+    /**
+     * Return unique ID(s) for each object in system
+     *
+     * @return array
+     */
+    public function getIdentities()
+    {
+        // skip cache for all store
+        return [Store::CACHE_TAG];
+    }
 }

app/code/Magento/Review/Test/Unit/Model/RatingTest.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Copyright © 2015 Magento. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Review\Model;
+
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use Magento\Store\Model\Store;
+use Magento\Review\Model\Rating;
+
+class RatingTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var \Magento\Review\Model\Rating
+     */
+    private $rating;
+
+    /**
+     * Init objects needed by tests
+     */
+    protected function setUp()
+    {
+        $helper = new ObjectManager($this);
+        $this->rating = $helper->getObject(Rating::class);
+    }
+
+    /**
+     * @covers \Magento\Review\Model\Rating::getIdentities()
+     * @return void
+     */
+    public function testGetIdentities()
+    {
+        static::assertEquals([Store::CACHE_TAG], $this->rating->getIdentities());
+    }
+}