rancher add province & city to serializer

apps/herd/web/api/v1/serializers.py

@@ -31,3 +31,18 @@ class RancherSerializer(serializers.ModelSerializer):
     class Meta:
         model = Rancher
         fields = '__all__'
+
+    def to_representation(self, instance):
+        representation = super().to_representation(instance)
+
+        representation['province'] = {
+            'id': instance.province.id,
+            'name': instance.province.name
+        }
+
+        representation['city'] = {
+            'id': instance.city.id,
+            'name': instance.city.name
+        }
+
+        return representation