fix(): fixed bugs with cache invalidation, notifications and guardrails

src/backend/api/v1/handlers.py

@@ -86,6 +86,14 @@ def _extract_django_rejected_value(
     return None
 
 
+def _extract_django_issue(
+    error: django.core.exceptions.ValidationError,
+) -> str:
+    if error.messages:
+        return str(error.messages[0])
+    return str(error.message)
+
+
 def handle_django_validation_error(
     request: HttpRequest,
     exc: django.core.exceptions.ValidationError,
@@ -99,7 +107,7 @@ def handle_django_validation_error(
             field_errors_data.extend(
                 {
                     "field": field,
-                    "issue": str(error.message),
+                    "issue": _extract_django_issue(error),
                     "rejected_value": _extract_django_rejected_value(error),
                 }
                 for error in errors
@@ -108,7 +116,7 @@ def handle_django_validation_error(
         field_errors_data.extend(
             {
                 "field": "non_field_error",
-                "issue": str(error.message),
+                "issue": _extract_django_issue(error),
                 "rejected_value": _extract_django_rejected_value(error),
             }
             for error in exc.error_list

src/backend/api/v1/reports/tests/test_reports_api.py

@@ -159,3 +159,14 @@ class ExperimentReportAPITest(TestCase):
             HTTP_AUTHORIZATION=self.auth,
         )
         self.assertEqual(resp.status_code, 404)
+
+    def test_report_invalid_start_date_returns_422(self) -> None:
+        resp = self.client.get(
+            reverse(
+                "api-1:get_experiment_report",
+                args=[self.experiment.pk],
+            ),
+            {"start_date": "not-a-date"},
+            HTTP_AUTHORIZATION=self.auth,
+        )
+        self.assertEqual(resp.status_code, 422)