django/tests/queryset_pickle/models.py

75 lines
2.0 KiB
Python

import datetime
from django.db import DJANGO_VERSION_PICKLE_KEY, models
from django.utils.translation import gettext_lazy as _
def standalone_number():
return 1
class Numbers:
@staticmethod
def get_static_number():
return 2
class PreviousDjangoVersionQuerySet(models.QuerySet):
def __getstate__(self):
state = super().__getstate__()
state[DJANGO_VERSION_PICKLE_KEY] = '1.0'
return state
class MissingDjangoVersionQuerySet(models.QuerySet):
def __getstate__(self):
state = super().__getstate__()
del state[DJANGO_VERSION_PICKLE_KEY]
return state
class Group(models.Model):
name = models.CharField(_('name'), max_length=100)
objects = models.Manager()
previous_django_version_objects = PreviousDjangoVersionQuerySet.as_manager()
missing_django_version_objects = MissingDjangoVersionQuerySet.as_manager()
class Event(models.Model):
title = models.CharField(max_length=100)
group = models.ForeignKey(Group, models.CASCADE)
class Happening(models.Model):
when = models.DateTimeField(blank=True, default=datetime.datetime.now)
name = models.CharField(blank=True, max_length=100, default="test")
number1 = models.IntegerField(blank=True, default=standalone_number)
number2 = models.IntegerField(blank=True, default=Numbers.get_static_number)
event = models.OneToOneField(Event, models.CASCADE, null=True)
class Container:
# To test pickling we need a class that isn't defined on module, but
# is still available from app-cache. So, the Container class moves
# SomeModel outside of module level
class SomeModel(models.Model):
somefield = models.IntegerField()
class M2MModel(models.Model):
groups = models.ManyToManyField(Group)
class AbstractEvent(Event):
class Meta:
abstract = True
ordering = ['title']
class MyEvent(AbstractEvent):
pass
class Edition(models.Model):
event = models.ForeignKey('MyEvent', on_delete=models.CASCADE)