diff --git a/models/Product.php b/models/Product.php
index 980b0d3..e85613b 100755
--- a/models/Product.php
+++ b/models/Product.php
@@ -2,10 +2,11 @@
     
     namespace artweb\artbox\ecommerce\models;
     
+    use artweb\artbox\comment\models\CommentModel;
+    use artweb\artbox\comment\models\interfaces\RatingCacheInterface;
     use artweb\artbox\ecommerce\behaviors\DefaultVariantBehavior;
     use artweb\artbox\behaviors\MultipleImgBehavior;
     use artweb\artbox\behaviors\SaveMultipleFileBehavior;
-//    use artweb\artbox\comment\models\CommentModel;
     use artweb\artbox\language\behaviors\LanguageBehavior;
     use Yii;
     use yii\base\InvalidParamException;
@@ -76,6 +77,22 @@
      * @method array getImagesConfig()
      * @method array getImagesHTML( string $preset )
      * * End multipleImage behavior
+     * * From CommentBehavior **
+     * @property string               $cacheModelName
+     * @property RatingCacheInterface $cacheModel
+     * @property boolean              $cacheRating
+     * @property CommentModel[]       $comments
+     * @property RatingCacheInterface $averageRating
+     * @method string getCacheModelName()
+     * @method void setCacheModelName( string $value )
+     * @method RatingCacheInterface getCacheModel()
+     * @method void setCacheModel( RatingCacheInterface $value )
+     * @method boolean getCacheRating()
+     * @method void setCacheRating( bool $value )
+     * @method ActiveQuery getComments()
+     * @method ActiveQuery getAverageRating()
+     * @method bool recalculateRating()
+     * * End CommentBehavior **
      */
     class Product extends ActiveRecord
     {
@@ -88,7 +105,7 @@
         public function behaviors()
         {
             return [
-                'images'        => [
+                'images'         => [
                     'class'     => SaveMultipleFileBehavior::className(),
                     'name'      => 'imagesUpload',
                     'directory' => 'products',
@@ -98,7 +115,7 @@
                     ],
                     'model'     => ProductImage::className(),
                 ],
-                'multipleImage' => [
+                'multipleImage'  => [
                     'class'      => MultipleImgBehavior::className(),
                     'links'      => [
                         'product_id' => 'id',
@@ -113,10 +130,15 @@
                         'id'            => 'id',
                     ],
                 ],
-                'language'      => [
+                'language'       => [
                     'class' => LanguageBehavior::className(),
                 ],
                 'defaultVariant' => DefaultVariantBehavior::className(),
+                'comment'        => [
+                    'class'          => 'artweb\artbox\comment\behaviors\CommentBehavior',
+                    'cacheRating'    => true,
+                    'cacheModelName' => ProductToRating::className(),
+                ],
             ];
         }
         
@@ -490,70 +512,6 @@
         }
         
         /**
-         * Recalculate rating for artboxcomment module
-         *
-         * @todo Rewrite with behavior
-         * @return bool
-         */
-//        public function recalculateRating():bool
-//        {
-//            /**
-//             * @var ProductToRating $averageRating
-//             */
-//            $average = $this->getComments()
-//                            ->joinWith('rating')
-//                            ->select([ 'average' => 'avg(artbox_comment_rating.value)::float' ])
-//                            ->scalar();
-//            if (!$average) {
-//                $average = 0;
-//            }
-//            $averageRating = $this->averageRating;
-//            if (!empty( $averageRating )) {
-//                $averageRating->value = $average;
-//            } else {
-//                $averageRating = new ProductToRating(
-//                    [
-//                        'product_id' => $this->id,
-//                        'value'      => $average,
-//                    ]
-//                );
-//            }
-//            if ($averageRating->save()) {
-//                return true;
-//            } else {
-//                return false;
-//            }
-//        }
-        
-        /**
-         * Get CommmentModel query for artboxcomment module
-         *
-         * @todo Rewrite with behavior
-         * @return ActiveQuery
-         */
-//        public function getComments()
-//        {
-//            return $this->hasMany(CommentModel::className(), [ 'entity_id' => 'id' ])
-//                        ->where(
-//                            [
-//                                'artbox_comment.entity'             => self::className(),
-//                                'artbox_comment.status'             => CommentModel::STATUS_ACTIVE,
-//                                'artbox_comment.artbox_comment_pid' => null,
-//                            ]
-//                        );
-//        }
-        
-        /**
-         * Get ProductToRating query in order to get average rating for current Product
-         *
-         * @return \yii\db\ActiveQuery
-         */
-//        public function getAverageRating()
-//        {
-//            return $this->hasOne(ProductToRating::className(), [ 'product_id' => 'id' ]);
-//        }
-        
-        /**
          * Get TaxGroupToCategories query via product_category table
          *
          * @return ActiveQuery
diff --git a/models/ProductToRating.php b/models/ProductToRating.php
new file mode 100644
index 0000000..820cfcb
--- /dev/null
+++ b/models/ProductToRating.php
@@ -0,0 +1,102 @@
+<?php
+    
+    namespace artweb\artbox\ecommerce\models;
+    
+    use artweb\artbox\comment\models\interfaces\RatingCacheInterface;
+    use Yii;
+    use yii\db\ActiveRecord;
+
+    /**
+     * This is the model class for table "product_to_rating".
+     *
+     * @property integer $id
+     * @property integer $product_id
+     * @property double  $value
+     * @property Product $product
+     */
+    class ProductToRating extends ActiveRecord implements RatingCacheInterface
+    {
+        /**
+         * @inheritdoc
+         */
+        public static function tableName()
+        {
+            return 'product_to_rating';
+        }
+        
+        /**
+         * @inheritdoc
+         */
+        public function rules()
+        {
+            return [
+                [
+                    [ 'product_id' ],
+                    'required',
+                ],
+                [
+                    [ 'product_id' ],
+                    'integer',
+                ],
+                [
+                    [ 'value' ],
+                    'number',
+                ],
+                [
+                    [ 'product_id' ],
+                    'unique',
+                ],
+                [
+                    [ 'product_id' ],
+                    'exist',
+                    'skipOnError'     => true,
+                    'targetClass'     => Product::className(),
+                    'targetAttribute' => [ 'product_id' => 'id' ],
+                ],
+            ];
+        }
+        
+        /**
+         * @inheritdoc
+         */
+        public function attributeLabels()
+        {
+            return [
+                'id'         => Yii::t('app', 'ID'),
+                'product_id' => Yii::t('app', 'Product ID'),
+                'value'      => Yii::t('app', 'Value'),
+            ];
+        }
+        
+        /**
+         * @return \yii\db\ActiveQuery
+         */
+        public function getProduct()
+        {
+            return $this->hasOne(Product::className(), [ 'id' => 'product_id' ]);
+        }
+    
+        /**
+         * @inheritdoc
+         */
+        public function getLinkAttribute(): string
+        {
+            return 'product_id';
+        }
+    
+        /**
+         * @inheritdoc
+         */
+        public function getValue(): float
+        {
+            return $this->value;
+        }
+    
+        /**
+         * @inheritdoc
+         */
+        public function setValue(float $value)
+        {
+            $this->value = $value;
+        }
+    }
--
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