chore: changed the annotate for cycle id (#5892)

apiserver/plane/app/views/issue/relation.py

@@ -11,8 +11,7 @@ from django.db.models import (
     UUIDField,
     Value,
     CharField,
-    Case,
-    When,
+    Subquery,
 )
 from django.core.serializers.json import DjangoJSONEncoder
 from django.db.models.functions import Coalesce
@@ -36,6 +35,7 @@ from plane.db.models import (
     Issue,
     FileAsset,
     IssueLink,
+    CycleIssue,
 )
 from plane.bgtasks.issue_activities_task import issue_activity
 
@@ -94,12 +94,10 @@ class IssueRelationViewSet(BaseViewSet):
             .select_related("workspace", "project", "state", "parent")
             .prefetch_related("assignees", "labels", "issue_module__module")
             .annotate(
-                cycle_id=Case(
-                    When(
-                        issue_cycle__deleted_at__isnull=True,
-                        then=F("issue_cycle__cycle_id"),
-                    ),
-                    default=None,
+                cycle_id=Subquery(
+                    CycleIssue.objects.filter(
+                        issue=OuterRef("id"), deleted_at__isnull=True
+                    ).values("cycle_id")[:1]
                 )
             )
             .annotate(
@@ -141,9 +139,11 @@ class IssueRelationViewSet(BaseViewSet):
                     ArrayAgg(
                         "assignees__id",
                         distinct=True,
-                        filter=Q(~Q(assignees__id__isnull=True)
-                        & Q(assignees__member_project__is_active=True)
-                        & Q(issue_assignee__deleted_at__isnull=True)),
+                        filter=Q(
+                            ~Q(assignees__id__isnull=True)
+                            & Q(assignees__member_project__is_active=True)
+                            & Q(issue_assignee__deleted_at__isnull=True)
+                        ),
                     ),
                     Value([], output_field=ArrayField(UUIDField())),
                 ),