fix: optimize issues field in RepositoryNode

backend/apps/github/api/internal/nodes/issue.py

@@ -7,6 +7,7 @@
 from apps.github.api.internal.nodes.pull_request import PullRequestNode
 from apps.github.api.internal.nodes.user import UserNode
 from apps.github.models.issue import Issue
+from apps.github.models.label import Label
 from apps.github.models.pull_request import PullRequest
 from apps.mentorship.models.issue_user_interest import IssueUserInterest
 
@@ -19,6 +20,12 @@
     to_attr="merged_pull_requests",
 )
 
+LABELS_PREFETCH = Prefetch(
+    "labels",
+    queryset=Label.objects.all(),
+    to_attr="label_names",
+)
+
 
 @strawberry_django.type(
     Issue,
@@ -52,10 +59,10 @@ def repository_name(self, root: Issue) -> str | None:
         """Resolve the repository name."""
         return root.repository.name if root.repository else None
 
-    @strawberry_django.field(prefetch_related=["labels"])
+    @strawberry_django.field(prefetch_related=[LABELS_PREFETCH])
     def labels(self, root: Issue) -> list[str]:
         """Resolve label names for the issue."""
-        return [label.name for label in root.labels.all()]
+        return [label.name for label in getattr(root, "label_names", [])]
 
     @strawberry_django.field(prefetch_related=[MERGED_PULL_REQUESTS_PREFETCH])
     def is_merged(self, root: Issue) -> bool:

backend/apps/github/api/internal/nodes/repository.py

@@ -4,13 +4,15 @@
 
 import strawberry
 import strawberry_django
+from django.db.models import Prefetch
 
 from apps.common.utils import normalize_limit
-from apps.github.api.internal.nodes.issue import IssueNode
+from apps.github.api.internal.nodes.issue import LABELS_PREFETCH, IssueNode
 from apps.github.api.internal.nodes.milestone import MilestoneNode
 from apps.github.api.internal.nodes.organization import OrganizationNode
 from apps.github.api.internal.nodes.release import ReleaseNode
 from apps.github.api.internal.nodes.repository_contributor import RepositoryContributorNode
+from apps.github.models.issue import Issue
 from apps.github.models.repository import Repository
 
 if TYPE_CHECKING:
@@ -45,10 +47,24 @@ class RepositoryNode(strawberry.relay.Node):
 
     organization: OrganizationNode | None = strawberry_django.field()
 
-    @strawberry_django.field(prefetch_related=["issues"])
+    @strawberry_django.field(
+        prefetch_related=[
+            Prefetch(
+                "issues",
+                queryset=Issue.objects.select_related(
+                    "author__owasp_profile", "repository__organization"
+                )
+                .prefetch_related(LABELS_PREFETCH)
+                .order_by("-created_at")[:RECENT_ISSUES_LIMIT],
+                to_attr="recent_issues",
+            )
+        ]
+    )
     def issues(self, root: Repository) -> list[IssueNode]:
         """Resolve recent issues."""
         # TODO(arkid15r): rename this to recent_issues.
+        if hasattr(root, "recent_issues"):
+            return root.recent_issues
         return root.issues.order_by("-created_at")[:RECENT_ISSUES_LIMIT]
 
     @strawberry_django.field

backend/tests/apps/github/api/internal/nodes/issue_test.py

@@ -93,7 +93,7 @@ def test_labels(self):
         mock_label1.name = "bug"
         mock_label2 = Mock()
         mock_label2.name = "enhancement"
-        mock_issue.labels.all.return_value = [mock_label1, mock_label2]
+        mock_issue.label_names = [mock_label1, mock_label2]
 
         field = self._get_field_by_name("labels", IssueNode)
         result = field.base_resolver.wrapped_func(None, mock_issue)

backend/tests/apps/github/api/internal/nodes/repository_test.py

@@ -6,7 +6,7 @@
 from apps.github.api.internal.nodes.milestone import MilestoneNode
 from apps.github.api.internal.nodes.organization import OrganizationNode
 from apps.github.api.internal.nodes.release import ReleaseNode
-from apps.github.api.internal.nodes.repository import RepositoryNode
+from apps.github.api.internal.nodes.repository import RECENT_ISSUES_LIMIT, RepositoryNode
 from apps.github.api.internal.nodes.repository_contributor import RepositoryContributorNode
 from tests.apps.common.graphql_node_base_test import GraphQLNodeBaseTest
 
@@ -91,16 +91,35 @@ def test_resolve_url(self):
         assert field is not None
         assert field.type is str
 
-    def test_issues_method(self):
-        """Test issues method resolution."""
+    def test_issues_method_with_recent_issues_attribute(self):
+        """Test issues method when recent_issues attribute is available."""
         mock_repository = Mock()
+        mock_issues = []
+        mock_repository.recent_issues = mock_issues
+
+        field = self._get_field_by_name("issues", RepositoryNode)
+        result = field.base_resolver.wrapped_func(None, mock_repository)
+        assert result == mock_issues
+
+    def test_issues_method_without_recent_issues_attribute(self):
+        """Test issues method when recent_issues doesn't exist."""
+        mock_repository = Mock(spec=["issues"])
         mock_issues = Mock()
-        mock_issues.order_by.return_value.__getitem__ = Mock(return_value=[])
+        mock_ordered_queryset = Mock()
+        mock_ordered_queryset.__getitem__ = Mock(return_value=[])
+
+        mock_issues.order_by.return_value = mock_ordered_queryset
         mock_repository.issues = mock_issues
 
         field = self._get_field_by_name("issues", RepositoryNode)
-        field.base_resolver.wrapped_func(None, mock_repository)
+        resolver = field.base_resolver.wrapped_func
+        result = resolver(None, mock_repository)
+
         mock_issues.order_by.assert_called_with("-created_at")
+        mock_ordered_queryset.__getitem__.assert_called_with(
+            slice(None, RECENT_ISSUES_LIMIT, None)
+        )
+        assert result == []
 
     def test_recent_milestones_with_invalid_limit(self):
         """Test recent_milestones returns empty list for invalid limit."""

backend/tests/apps/github/api/internal/queries/repository_test.py

@@ -45,7 +45,6 @@ def test_resolve_repository_not_found(self):
         mock_queryset = MagicMock()
         mock_queryset.select_related.return_value = mock_queryset
         mock_queryset.get.side_effect = Repository.DoesNotExist
-
         with patch(
             "apps.github.models.repository.Repository.objects",
             mock_queryset,