show_my_org in organizations list - validation of org national_unique_id

apps/authentication/api/v1/serializers/serializer.py

@@ -4,7 +4,7 @@ from django.contrib.auth.hashers import make_password
 from django.db.models import Q
 from rest_framework import serializers
 
-from apps.authentication.exceptions import UserExistException
+from apps.authentication.exceptions import UserExistException, OrganizationNationalUniqueIDException
 from apps.authentication.models import (
     User,
     City,
@@ -224,6 +224,17 @@ class OrganizationSerializer(serializers.ModelSerializer):
         ]
         extra_kwargs = {}
 
+    def validate(self, attrs):
+        national_unique_id = self.context['request'].data['organization']['national_unique_id']
+
+        if not self.instance:
+            if self.Meta.model.objects.filter(national_unique_id=national_unique_id).exists():
+                raise OrganizationNationalUniqueIDException()
+        if self.instance:
+            if self.instance.national_unique_id != national_unique_id:
+                if self.Meta.model.objects.filter(national_unique_id=national_unique_id).exists():
+                    raise OrganizationNationalUniqueIDException()
+
     def to_representation(self, instance):
         """ Custom output """
         representation = super().to_representation(instance)