Add django filter for patient review missed (#1938)

* Add django filter for patient review missed

* re-commit

* Update care/facility/tests/test_patient_api.py

* fix lint issues

* fix test cases

* handle review_missed = False

---------

Co-authored-by: Aakash Singh <[email protected]>

care/facility/api/viewsets/patient.py

@@ -18,6 +18,7 @@
 )
 from django.db.models.functions import Coalesce, ExtractDay, Now
 from django.db.models.query import QuerySet
+from django.utils import timezone
 from django_filters import rest_framework as filters
 from djqscsv import render_to_csv_response
 from drf_spectacular.utils import extend_schema, extend_schema_view
@@ -237,6 +238,20 @@ def filter_bed_not_null(self, queryset, name, value):
             last_consultation__discharge_date__isnull=True,
         )
 
+    def filter_by_review_missed(self, queryset, name, value):
+        if isinstance(value, bool):
+            if value:
+                queryset = queryset.filter(
+                    (Q(review_time__isnull=False) & Q(review_time__lt=timezone.now()))
+                )
+            else:
+                queryset = queryset.filter(
+                    Q(review_time__isnull=True) | Q(review_time__gt=timezone.now())
+                )
+        return queryset
+
+    review_missed = filters.BooleanFilter(method="filter_by_review_missed")
+
     # Filter consultations by ICD-11 Diagnoses
     diagnoses = MultiSelectFilter(method="filter_by_diagnoses")
     diagnoses_unconfirmed = MultiSelectFilter(method="filter_by_diagnoses")

care/facility/tests/test_patient_api.py

@@ -409,6 +409,21 @@ def test_filter_by_diagnoses_confirmed(self):
         )
         self.assertNotContains(res, self.patient.external_id)
 
+    def test_filter_by_review_missed(self):
+        self.client.force_authenticate(user=self.user)
+        res = self.client.get(self.get_base_url() + "?review_missed=true")
+        self.assertEqual(res.status_code, status.HTTP_200_OK)
+        for patient in res.json()["results"]:
+            self.assertLess(patient["review_time"], now())
+
+        res = self.client.get(self.get_base_url() + "?review_missed=false")
+        self.assertEqual(res.status_code, status.HTTP_200_OK)
+        for patient in res.json()["results"]:
+            if patient["review_time"]:
+                self.assertGreaterEqual(patient["review_time"], now())
+            else:
+                self.assertIsNone(patient["review_time"])
+
 
 class PatientTransferTestCase(TestUtils, APITestCase):
     @classmethod