add district api view

core/apps/shared/serializers/region.py

@@ -10,10 +10,9 @@ class DistrictListSerializer(serializers.ModelSerializer):
 
 
 class RegionListSerializer(serializers.ModelSerializer):
-    districts = DistrictListSerializer(many=True)
-    
     class Meta:
         model = Region
         fields = [
-            'id', 'name', 'districts'
+            'id', 'name',
         ]
+

core/apps/shared/urls.py

@@ -4,4 +4,5 @@ from core.apps.shared.views import region as region_views
 
 urlpatterns = [
     path('region/list/', region_views.RegionListApiView.as_view()),
+    path('region/<uuid:id>/districts/', region_views.DistrictListApiView.as_view()),
 ]

core/apps/shared/views/region.py

@@ -1,13 +1,28 @@
-from rest_framework import generics
+from django.shortcuts import get_object_or_404
 
-from core.apps.shared.serializers.region import RegionListSerializer
+from rest_framework import generics, views
-from core.apps.shared.models import Region
+from rest_framework.response import Response
+
+from core.apps.shared.serializers.region import RegionListSerializer, DistrictListSerializer
+from core.apps.shared.models import Region, District
 from core.apps.accounts.permissions.permissions import HasRolePermission
 
 
 
 class RegionListApiView(generics.ListAPIView):
     permission_classes = [HasRolePermission]
-    queryset = Region.objects.prefetch_related('districts')
+    queryset = Region.objects.all()
     serializer_class = RegionListSerializer
     required_permissions = ['project', 'project_folder']
+    pagination_class = None
+
+
+class DistrictListApiView(views.APIView):
+    permission_classes = [HasRolePermission]
+    required_permissions = ['project', 'project_folder']
+
+    def get(self, request, id):
+        region = get_object_or_404(Region, id=id)
+        districts = District.objects.filter(region=region)
+        serializer = DistrictListSerializer(districts, many=True)
+        return Response(serializer.data, status=200)