poroduct in_fav

apps/account/models.py

@@ -278,6 +278,14 @@ class User(AbstractUser):
             model='news',
         ).values_list('object_id', flat=True)
 
+    @property
+    def favorite_product_ids(self):
+        """Return news IDs that in favorites for current user."""
+        return self.favorites.by_content_type(
+            app_label='product',
+            model='product',
+        ).values_list('object_id', flat=True)
+
 
 class UserRole(ProjectBaseMixin):
     """UserRole model."""

apps/product/models.py

@@ -3,6 +3,7 @@ from django.contrib.contenttypes import fields as generic
 from django.contrib.gis.db import models as gis_models
 from django.core.exceptions import ValidationError
 from django.db import models
+from django.db.models import Case, When
 from django.utils.translation import gettext_lazy as _
 from django.core.validators import MaxValueValidator, MinValueValidator
 
@@ -110,6 +111,19 @@ class ProductQuerySet(models.QuerySet):
         """Filter products by published state."""
         return self.filter(state=self.model.PUBLISHED)
 
+    def annotate_in_favorites(self, user):
+        """Annotate flag in_favorites"""
+        favorite_product_ids = []
+        if user.is_authenticated:
+            favorite_product_ids = user.favorite_product_ids
+        return self.annotate(
+            in_favorites=Case(
+                When(id__in=favorite_product_ids, then=True),
+                default=False,
+                output_field=models.BooleanField(default=False)
+            )
+        )
+
 
 class Product(TranslatedFieldsMixin, BaseAttributes):
     """Product models."""

apps/product/serializers/common.py

@@ -95,6 +95,7 @@ class ProductBaseSerializer(serializers.ModelSerializer):
     preview_image_url = serializers.URLField(source='preview_main_image_url',
                                              allow_null=True,
                                              read_only=True)
+    in_favorites = serializers.BooleanField(allow_null=True)
 
     class Meta:
         """Meta class."""
@@ -112,6 +113,7 @@ class ProductBaseSerializer(serializers.ModelSerializer):
             'preview_image_url',
             'wine_region',
             'wine_colors',
+            'in_favorites',
         ]
 
 

apps/product/views/back.py

@@ -13,6 +13,11 @@ class ProductBackOfficeMixinView(ProductBaseView):
 
     permission_classes = (permissions.IsAuthenticated,)
 
+    def get_queryset(self):
+        """Override get_queryset method."""
+        qs = models.Product.objects.annotate_in_favorites(self.request.user)
+        return qs
+
 
 class ProductTypeBackOfficeMixinView:
     """Product type back-office mixin view."""