from django.db import models from django.shortcuts import redirect from django.urls import reverse from django.utils.translation import ugettext as _ from django.utils.translation import ugettext_lazy as _l from django.contrib import messages from cotisations.models import Paiement from cotisations.payment_methods.mixins import PaymentMethodMixin class BalancePayment(PaymentMethodMixin, models.Model): """ The model allowing you to pay with a cheque. """ payment = models.OneToOneField( Paiement, related_name='payment_method', editable=False ) minimum_balance = models.DecimalField( verbose_name=_l("Minimum balance"), help_text=_l("The minimal amount of money allowed for the balance" " at the end of a payment. You can specify negative " "amount." ), max_digits=5, decimal_places=2, ) maximum_balance = models.DecimalField( verbose_name=_l("Maximum balance"), help_text=_l("The maximal amount of money allowed for the balance."), max_digits=5, decimal_places=2, default=50 ) def end_payment(self, invoice, request): user = invoice.user total_price = invoice.prix_total() if float(user.solde) - float(total_price) < self.minimum_balance: invoice.valid = False invoice.save() messages.error( request, _("Your balance is too low for this operation.") ) return redirect(reverse( 'users:profil', kwargs={'userid': user.id} )) return invoice.paiement.end_payment( invoice, request, use_payment_method=False ) def valid_form(self, form): p = Paiement.objects.filter(is_balance=True) if len(p) > 0: form.add_error( 'payment_method', _("There is already a payment type for user balance") ) def alter_payment(self, payment): self.payment.is_balance = True