first try at implementing product viewset "related" action

products/tests.py

@@ -194,6 +194,21 @@ class ProductViewSetTest(APITestCase):
         # Assert number of instnaces in response
         self.assertEquals(len(expected_instance), len(payload))
 
+    def test_anon_can_get_related_products(self):
+        # Create instances
+        instance = self.factory()
+        # make our user the creator
+        instance.creator = self.user
+        instance.save()
+
+        url = f"{self.endpoint}{instance.id}/related/"
+
+        response = self.client.get(url)
+
+        self.assertEquals(response.status_code, 200)
+        payload= response.json()
+        self.assertTrue(len(payload) <= 6)
+
     # authenticated user
     def test_auth_user_can_paginate_instances(self):
         """authenticated user can paginate instances

products/utils.py

@@ -85,6 +85,16 @@ def extract_search_filters(result_set):
     return filter_dict
 
 
+def find_related_products_v7(description, tags, attributes, category):
+    products_qs = Product.objects.filter(
+        description=description,
+        tags__in=tags,
+        attributes__in=attributes,
+        category=category
+        )[:6]
+    return products_qs
+
+
 def find_related_products_v3(keyword):
     """
     Ranked product search

products/views.py

@@ -23,7 +23,7 @@ from products.models import Product, CategoryTag
 from products.serializers import ProductSerializer, TagFilterSerializer, SearchResultSerializer
 from companies.models import Company
 from back_latienda.permissions import IsCreator, IsSiteAdmin, ReadOnly
-from .utils import extract_search_filters, find_related_products_v3, find_related_products_v6, product_loader
+from .utils import extract_search_filters, find_related_products_v6, product_loader, find_related_products_v7
 from utils.tag_serializers import TaggitSerializer
 from utils.tag_filters import ProductTagFilter, ProductOrderFilter
 
@@ -47,9 +47,14 @@ class ProductViewSet(viewsets.ModelViewSet):
         serializer.save(creator=self.request.user, company=self.request.user.company)
 
     @action(detail=True, methods=['GET',])
-      def related(request):
+    def related(self, request, pk=None):
+        """Find instances similar to the one referenced
+        """
         # TODO: find the most similar products
-            return Response(data=[])
+        product = self.get_object()
+        qs = find_related_products_v7(product.description, product.tags.all(), product.attributes.all(), product.category)
+        serializer = self.serializer_class(qs, many=True)
+        return Response(data=serializer.data)
 
 
 class MyProductsViewSet(viewsets.ModelViewSet):