validation of organization bank accounts

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

@@ -5,7 +5,8 @@ from django.db.models import Q
 from rest_framework import serializers
 
 from apps.authentication.exceptions import UserExistException, OrganizationNationalUniqueIDException, \
-    OrganizationTypeRepeatableException, BankAccountExistException
+    OrganizationTypeRepeatableException, BankAccountExistException, BankAccountNumberAccountException, \
+    BankAccountCardException, BankAccountShebaException
 from apps.authentication.models import (
     User,
     City,
@@ -56,9 +57,21 @@ class BankAccountSerializer(serializers.ModelSerializer):
         card = attrs['card']
         sheba = attrs['sheba']
 
-        if self.Meta.model.objects.filter(Q(account=account) | Q(card=card) | Q(sheba=sheba)).exists():
-            raise BankAccountExistException()
+        if not self.instance:
+            if self.Meta.model.objects.filter(Q(account=account) | Q(card=card) | Q(sheba=sheba)).exists():
+                raise BankAccountExistException()
+        elif self.instance:
+            if self.instance.account != account:
+                if self.Meta.model.objects.filter(Q(account=account)).exists():
+                    raise BankAccountNumberAccountException()
 
+            elif self.instance.card != card:
+                if self.Meta.model.objects.filter(Q(card=card)).exists():
+                    raise BankAccountCardException()
+
+            elif self.instance.sheba != sheba:
+                if self.Meta.model.objects.filter(Q(sheba=sheba)).exists():
+                    raise BankAccountShebaException()
         return attrs
 
     def update(self, instance, validated_data):