Add created to products search results

apps/search_indexes/documents/product.py

@@ -149,6 +149,7 @@ class ProductDocument(Document):
     name_ru = fields.TextField(attr='display_name', analyzer='russian')
     name_fr = fields.TextField(attr='display_name', analyzer='french')
     favorites_for_users = fields.ListField(field=fields.IntegerField())
+    created = fields.DateField(attr='create') # publishing date (?)
 
     class Django:
         model = models.Product

apps/search_indexes/serializers.py

@@ -290,4 +290,5 @@ class ProductDocumentSerializer(InFavoritesMixin, DocumentSerializer):
             'grape_variety',
             'establishment_detail',
             'average_price',
+            'created',
         )