symposion_app/pinaxcon/raffle/models.py
Joel Addison 252697b842 Update to Django 2.2
Upgrade site and modules to Django 2.2. Remove and replace obsolete
functionality with current equivalents. Update requirements to latest
versions where possible. Remove unused dependencies.
2020-11-22 23:58:14 +10:00

117 lines
3.2 KiB
Python

from django.conf import settings
from django.db import models
from pinaxcon.raffle.mixins import PrizeMixin, RaffleMixin
class Raffle(RaffleMixin, models.Model):
"""
Stores a single Raffle object, related to one or many
:model:`pinaxcon_registrasion.Product`, which is usually a raffle ticket,
but can be set to tickets or other products for door prizes.
"""
description = models.CharField(max_length=255)
products = models.ManyToManyField('registrasion.Product')
hidden = models.BooleanField(default=True)
def __str__(self):
return self.description
class Prize(PrizeMixin, models.Model):
"""
Stores a Prize for a given :model:`pinaxcon_raffle.Raffle`.
Once `winning_ticket` has been set to a :model:`pinaxcon_raffle.DrawnTicket`
object, no further changes are permitted unless the object is explicitely
unlocked.
"""
description = models.CharField(max_length=255)
raffle = models.ForeignKey(
'pinaxcon_raffle.Raffle',
related_name='prizes',
on_delete=models.CASCADE,
)
order = models.PositiveIntegerField()
winning_ticket = models.OneToOneField(
'pinaxcon_raffle.DrawnTicket',
null=True,
blank=True,
related_name='+',
on_delete=models.PROTECT,
)
class Meta:
unique_together = ('raffle', 'order')
def __str__(self):
return f"{self.order}. Prize: {self.description}"
class PrizeAudit(models.Model):
"""
Stores an audit event for changes to a particular :model:`pinaxcon_raffle.Prize`.
"""
reason = models.CharField(max_length=255)
prize = models.ForeignKey(
'pinaxcon_raffle.Prize',
related_name='audit_events',
on_delete=models.CASCADE,
)
user = models.ForeignKey(
settings.AUTH_USER_MODEL,
on_delete=models.CASCADE,
)
timestamp = models.DateTimeField(auto_now_add=True)
class Meta:
ordering = ('-timestamp',)
def __str__(self):
return self.reason
class Draw(models.Model):
"""
Stores a draw for a given :model:`pinaxcon_raffle.Raffle`, along with audit fields
for the creating :model:`auth.User` and the creation timestamp.
"""
raffle = models.ForeignKey(
'pinaxcon_raffle.Raffle',
related_name='draws',
on_delete=models.CASCADE,
)
drawn_by = models.ForeignKey(
settings.AUTH_USER_MODEL,
on_delete=models.CASCADE,
)
drawn_time = models.DateTimeField(auto_now_add=True)
def __str__(self):
return f"{self.raffle}: {self.drawn_time}"
class DrawnTicket(models.Model):
"""
Stores the result of a ticket draw, along with the corresponding
:model:`pinaxcon_raffle.Draw`, :model:`pinaxcon_raffle.Prize` and the
:model:`registrasion.commerce.LineItem` from which it was generated.
"""
ticket = models.CharField(max_length=255)
draw = models.ForeignKey(
'pinaxcon_raffle.Draw',
on_delete=models.CASCADE,
)
prize = models.ForeignKey(
'pinaxcon_raffle.Prize',
on_delete=models.CASCADE,
)
lineitem = models.ForeignKey(
'registrasion.LineItem',
on_delete=models.CASCADE,
)
def __str__(self):
return f"{self.ticket}: {self.draw.raffle}"