Updated API (recent articles)

articles/views.py

 """ Views with OpenAPI annotations """
+import datetime
 import logging
 
+from django.db.models import Q
 from django.shortcuts import render
 from django.utils import timezone
 from django.utils.decorators import method_decorator
@@ -83,13 +85,18 @@ class MediumTypeDetail(generics.RetrieveUpdateDestroyAPIView):  # pylint: disabl
 
 class TimelineList(generics.ListAPIView):
     """ List all timeline objects """
-    queryset = Timeline.objects.all()
+    today = datetime.datetime.today()
+    datetime_recent = today - datetime.timedelta(days=365)
+    queryset = Timeline.objects.filter(
+        Q(year=today.year, month__lte=today.month) | Q(year=datetime_recent.year, month__gte=datetime_recent.month))
     serializer_class = TimelineSerializer
 
 
 class OverviewList(generics.ListAPIView):
     """ List all overview objects """
-    queryset = Overview.objects.all()
+    today = datetime.datetime.today()
+    datetime_recent = today - datetime.timedelta(days=90)
+    queryset = Overview.objects.filter(date_of_publication__range=[datetime_recent, today])
     serializer_class = OverviewSerializer