susioma/ledger/models.py

from django.db import models

from buyer.models import Card

# Create your models here.

class Payment(models.Model):
    description = models.CharField("Payment description", max_length=128)
    amount = models.DecimalField("Payment amount", max_digits=15, decimal_places=2)
    date = models.DateTimeField("Date of payment", auto_now_add=True)
    repayment = models.DateTimeField("Date of repayment", default=None, null=True, blank=True)
    card = models.ForeignKey(Card, models.SET_NULL, null=True, blank=True)
    attachment = models.FileField("uploads", null=True, blank=True)

    def __str__(self):
        return self.description