Use a specific serializer

backend/code_review_backend/issues/api_v2.py

@@ -10,11 +10,11 @@
 from rest_framework.generics import ListAPIView
 
 from code_review_backend.issues.models import Diff, IssueLink
-from code_review_backend.issues.serializers import IssueHashSerializer
+from code_review_backend.issues.serializers_v2 import IssueLinkHashSerializer
 
 
 class IssueList(ListAPIView):
-    serializer_class = IssueHashSerializer
+    serializer_class = IssueLinkHashSerializer
     allowed_modes = ["unresolved", "known", "closed"]
 
     @cached_property
@@ -39,7 +39,7 @@ def distinct_issues(self, qs):
         Convert a list of issue links to unique couples of (issue_id, issue_hash)
         """
         attributes = ("issue_id", "issue__hash")
-        return qs.order_by(*attributes).values_list(*attributes).distinct()
+        return qs.order_by(*attributes).values(*attributes).distinct()
 
     def get_unresolved(self):
         """

backend/code_review_backend/issues/serializers_v2.py

@@ -0,0 +1,15 @@
+from rest_framework import serializers
+
+from code_review_backend.issues.models import IssueLink
+
+
+class IssueLinkHashSerializer(serializers.ModelSerializer):
+    """Serialize an Issue hash from the IssueLink M2M"""
+
+    id = serializers.UUIDField(source="issue_id")
+    hash = serializers.CharField(source="issue__hash", max_length=32)
+
+    class Meta:
+        model = IssueLink
+        fields = ("id", "hash")
+        read_only_fields = ("id", "hash")