website/payments/api/v2/serializers/payment_amount.py
from rest_framework import serializers
from payments.models import PaymentAmountField
class PaymentAmountSerializer(serializers.DecimalField):
def __init__(self, **kwargs):
kwargs["max_digits"] = PaymentAmountField.MAX_DIGITS
kwargs["decimal_places"] = PaymentAmountField.DECIMAL_PLACES
super().__init__(**kwargs)