django-orchestra/orchestra/apps/payments/models.py

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from django.core.exceptions import ValidationError
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from django.db import models
from django.utils.functional import cached_property
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from django.utils.translation import ugettext_lazy as _
from jsonfield import JSONField
from orchestra.core import accounts
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from orchestra.models.queryset import group_by
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from . import settings
from .methods import PaymentMethod
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class PaymentSourcesQueryset(models.QuerySet):
def get_source(self):
# TODO
return self.filter(is_active=True).first()
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class PaymentSource(models.Model):
account = models.ForeignKey('accounts.Account', verbose_name=_("account"),
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related_name='paymentsources')
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method = models.CharField(_("method"), max_length=32,
choices=PaymentMethod.get_plugin_choices())
data = JSONField(_("data"))
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is_active = models.BooleanField(_("is active"), default=True)
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objects = PaymentSourcesQueryset.as_manager()
def __unicode__(self):
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return "%s (%s)" % (self.label, self.method_class.verbose_name)
@cached_property
def method_class(self):
return PaymentMethod.get_plugin(self.method)
@cached_property
def label(self):
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return self.method_class().get_label(self.data)
@cached_property
def number(self):
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return self.method_class().get_number(self.data)
class TransactionQuerySet(models.QuerySet):
group_by = group_by
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# TODO lock transaction in waiting confirmation
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class Transaction(models.Model):
WAITTING_PROCESSING = 'WAITTING_PROCESSING'
WAITTING_CONFIRMATION = 'WAITTING_CONFIRMATION'
CONFIRMED = 'CONFIRMED'
REJECTED = 'REJECTED'
LOCKED = 'LOCKED'
DISCARTED = 'DISCARTED'
STATES = (
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(WAITTING_PROCESSING, _("Waitting processing")),
(WAITTING_CONFIRMATION, _("Waitting confirmation")),
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(CONFIRMED, _("Confirmed")),
(REJECTED, _("Rejected")),
(LOCKED, _("Locked")),
(DISCARTED, _("Discarted")),
)
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objects = TransactionQuerySet.as_manager()
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bill = models.ForeignKey('bills.bill', verbose_name=_("bill"),
related_name='transactions')
source = models.ForeignKey(PaymentSource, null=True, blank=True,
verbose_name=_("source"), related_name='transactions')
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state = models.CharField(_("state"), max_length=32, choices=STATES,
default=WAITTING_PROCESSING)
amount = models.DecimalField(_("amount"), max_digits=12, decimal_places=2)
currency = models.CharField(max_length=10, default=settings.PAYMENT_CURRENCY)
created_on = models.DateTimeField(auto_now_add=True)
modified_on = models.DateTimeField(auto_now=True)
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def __unicode__(self):
return "Transaction {}".format(self.id)
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@property
def account(self):
return self.bill.account
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# TODO rename to TransactionProcess or PaymentRequest TransactionRequest
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class PaymentProcess(models.Model):
"""
Stores arbitrary data generated by payment methods while processing transactions
"""
transactions = models.ManyToManyField(Transaction, related_name='processes',
verbose_name=_("transactions"))
data = JSONField(_("data"), blank=True)
file = models.FileField(_("file"), blank=True)
created_at = models.DateTimeField(_("created at"), auto_now_add=True)
# TODO state: created, commited, secured (delayed persistence)
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def __unicode__(self):
return str(self.id)
accounts.register(PaymentSource)
accounts.register(Transaction)