Django rest framework partial update with where query - django

Question

I just want to update two fields of table where id_payment = 1. How to do it? It showing me the error bellow.
IntegrityError at /receivePendingPayment/
(1048, "Column 'bank_id' cannot be null")
#View
#permission_classes([IsAuthenticated])
#api_view(['PATCH'])
def receivePendingPayment(request):
id_payment = request.data['id_payment']
data = {'accountant_received_by': request.user.id, 'accounts_status': 'Received'}
BankPaymentHistory.objects.filter(id=id_payment)
serializer = BankPaymentUpdateSerializer(data=data, partial=True, many=False)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_200_OK)
else:
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
#Serializer
class BankPaymentUpdateSerializer(serializers.ModelSerializer):
class Meta:
model = BankPaymentHistory
fields = ('accounts_status','accountant_received_by')
#Model
class BankPaymentHistory(models.Model):
activation_enum = (('Active', 'Active'), ('Deactive', 'Deactive'))
accounts_status_enum = (('Pending', 'Pending'), ('Received', 'Received'))
bank = models.ForeignKey(Bank, on_delete=models.CASCADE)
project = models.ForeignKey(Project, on_delete=models.CASCADE)
file = models.ForeignKey(File, on_delete=models.CASCADE)
salesperson = models.ForeignKey(SalesPerson, on_delete=models.CASCADE)
paymentmode = models.ForeignKey(PaymentModes, on_delete=models.CASCADE)
amount = models.PositiveIntegerField()
chequeno = models.CharField(max_length=50, unique=True)
chequedate = models.DateField()
paymentdate = models.DateField()
remark = models.TextField(blank=True, null=True)
user = models.ForeignKey(User, on_delete=models.CASCADE)
accountant_received_by = models.ForeignKey(User, related_name='%(class)s_accountant_received_by', on_delete=models.CASCADE, null = True)
accountant_received_date = models.DateTimeField(default=datetime.now)
create_date = models.DateTimeField(default=datetime.now)
activation_status = models.CharField(max_length=20, choices=activation_enum, default='Active')
accounts_status = models.CharField(max_length=20, choices=accounts_status_enum, default='Pending')

Answer 1

Pass an instance to the serializer, so it can know that it should do an update.
instance = BankPaymentHistory.objects.filter(id=id_payment).first()
serializer = BankPaymentUpdateSerializer(instance=instance, data=data, partial=True, many=False)