feat: notification pagination (#1580)

apiserver/plane/api/views/notification.py

@@ -6,6 +6,7 @@ from django.utils import timezone
 from rest_framework import status
 from rest_framework.response import Response
 from sentry_sdk import capture_exception
+from plane.utils.paginator import BasePaginator
 
 # Module imports
 from .base import BaseViewSet, BaseAPIView
@@ -13,7 +14,7 @@ from plane.db.models import Notification, IssueAssignee, IssueSubscriber, Issue
 from plane.api.serializers import NotificationSerializer
 
 
-class NotificationViewSet(BaseViewSet):
+class NotificationViewSet(BaseViewSet, BasePaginator):
     model = Notification
     serializer_class = NotificationSerializer
 
@@ -83,6 +84,16 @@ class NotificationViewSet(BaseViewSet):
                 ).values_list("pk", flat=True)
                 notifications = notifications.filter(entity_identifier__in=issue_ids)
 
+            # Pagination
+            if request.GET.get("per_page", False) and request.GET.get("cursor", False):
+                return self.paginate(
+                    request=request,
+                    queryset=(notifications),
+                    on_results=lambda notifications: NotificationSerializer(
+                        notifications, many=True
+                    ).data,
+                )
+
             serializer = NotificationSerializer(notifications, many=True)
             return Response(serializer.data, status=status.HTTP_200_OK)
         except Exception as e: