1 files changed, 10 insertions, 4 deletions
diff --git a/ishtar_common/views_item.py b/ishtar_common/views_item.py
index 31a16b672..5e689367b 100644
--- a/ishtar_common/views_item.py
+++ b/ishtar_common/views_item.py
@@ -29,6 +29,7 @@ from django.db.models import (
     FileField,
 )
 from django.db.models.fields import FieldDoesNotExist
+from django.db.models.functions import ExtractYear
 from django.db.utils import ProgrammingError
 from django.forms.models import model_to_dict
 from django.http import HttpResponse
@@ -1422,10 +1423,15 @@ def _format_modality(value):
 def _get_json_stats(
     items, stats_sum_variable, stats_modality_1, stats_modality_2, multiply=1
 ):
-    if stats_modality_2:
-        q = items.values(stats_modality_1, stats_modality_2)
-    else:
-        q = items.values(stats_modality_1)
+    q = items
+    value_keys = []
+    for stat in (stats_modality_1, stats_modality_2):
+        if not stat:
+            continue
+        if stat.endswith("__year"):
+            q = q.annotate(**{stat: ExtractYear(stat[:-len("__year")])})
+        value_keys.append(stat)
+    q = q.values(*value_keys)
     if stats_sum_variable == "pk":
         q = q.annotate(sum=Count("pk"))
     else: