feat(alert-system): add country/region validation in alert subscription serializer

Author: sudip-khanal

assets

@@ -1,3 +1,4 @@
+from django.utils.translation import gettext
 from rest_framework import serializers
 
 from api.serializers import (
@@ -270,6 +271,16 @@ class AlertSubscriptionSerialize(ModelSerializer):
     hazard_types_detail = DisasterTypeSerializer(source="hazard_types", many=True, read_only=True)
     alert_per_day_display = serializers.CharField(source="get_alert_per_day_display", read_only=True)
 
+    def validate(self, attrs):
+        countries = attrs.get("countries")
+        regions = attrs.get("regions")
+
+        if not countries and not regions:
+            raise serializers.ValidationError(
+                {"non_field_errors": gettext("Please select at least one country or one region to create a subscription.")}
+            )
+        return attrs
+
     class Meta:
         model = AlertSubscription
         fields = (

notifications/serializers.py

@@ -277,6 +277,20 @@ def test_list_retrieve_subscription(self):
         self.assert_200(response)
         self.assertEqual(response.data["user"], self.user1.id)
 
+    # Test create Subscription without country and region
+    def test_create_subscription_without_country_and_region(self):
+        data = {
+            "title": "title-1-test",
+            "user": self.user1.id,
+            "hazard_types": [self.hazard_type1.id, self.hazard_type2.id],
+            "alert_per_day": AlertSubscription.AlertPerDay.TEN,
+            "source": AlertSubscription.AlertSource.MONTANDON,
+        }
+        url = "/api/v2/alert-subscription/"
+        self.authenticate(self.user1)
+        response = self.client.post(url, data=data, format="json")
+        self.assert_400(response)
+
     # Test Create Subscription
     def test_create_subscription(self):