Fix: correct api created coercion with timezone (#10287)

src/documents/serialisers.py

@@ -18,7 +18,11 @@ from django.core.validators import MaxLengthValidator
 from django.core.validators import RegexValidator
 from django.core.validators import integer_validator
 from django.utils.crypto import get_random_string
+from django.utils.dateparse import parse_datetime
 from django.utils.text import slugify
+from django.utils.timezone import get_current_timezone
+from django.utils.timezone import is_naive
+from django.utils.timezone import make_aware
 from django.utils.translation import gettext as _
 from drf_spectacular.utils import extend_schema_field
 from drf_spectacular.utils import extend_schema_serializer
@@ -972,11 +976,11 @@ class DocumentSerializer(
             and ":" in data["created"]
         ):
             # Handle old format of isoformat datetime string
-            try:
-                data["created"] = datetime.fromisoformat(data["created"]).date()
-            except ValueError:  # pragma: no cover
-                # Just pass, validation will catch it
-                pass
+            parsed = parse_datetime(data["created"])
+            if parsed:
+                if is_naive(parsed):
+                    parsed = make_aware(parsed, get_current_timezone())
+                data["created"] = parsed.astimezone().date()
         return super().to_internal_value(data)
 
     def validate(self, attrs):

src/documents/tests/test_api_documents.py

@@ -203,6 +203,27 @@ class TestDocumentApi(DirectoriesMixin, DocumentConsumeDelayMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response.data["created"], "2023-01-01")
 
+        # legacy datetime format
+        response = self.client.patch(
+            f"/api/documents/{doc.pk}/",
+            {"created": "2023-02-01T23:00:00Z"},
+            format="json",
+        )
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        doc.refresh_from_db()
+        self.assertEqual(doc.created, date(2023, 2, 1))
+
+        # naive datetime
+        response = self.client.patch(
+            f"/api/documents/{doc.pk}/",
+            {"created": "2023-06-28T23:00:00"},
+            format="json",
+        )
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        doc.refresh_from_db()
+        self.assertEqual(doc.created, date(2023, 6, 28))
+
     def test_document_update_legacy_created_format(self):
         """
         GIVEN: