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# -*- coding: utf-8 -*-
#
import uuid
from django.db import models
from django.utils import timezone
from django.utils.translation import ugettext_lazy as _
__all__ = [
"NoDeleteManager", "NoDeleteModelMixin", "NoDeleteQuerySet",
"CommonModelMixin"
]
class NoDeleteQuerySet(models.query.QuerySet):
def delete(self):
return self.update(is_discard=True, discard_time=timezone.now())
class NoDeleteManager(models.Manager):
def get_all(self):
return NoDeleteQuerySet(self.model, using=self._db)
def get_queryset(self):
return NoDeleteQuerySet(self.model, using=self._db).filter(is_discard=False)
def get_deleted(self):
return NoDeleteQuerySet(self.model, using=self._db).filter(is_discard=True)
class NoDeleteModelMixin(models.Model):
is_discard = models.BooleanField(verbose_name=_("is discard"), default=False)
discard_time = models.DateTimeField(verbose_name=_("discard time"), null=True, blank=True)
objects = NoDeleteManager()
class Meta:
abstract = True
def delete(self):
self.is_discard = True
self.discard_time = timezone.now()
return self.save()
class CommonModelMixin(models.Model):
id = models.UUIDField(default=uuid.uuid4, primary_key=True)
created_by = models.CharField(max_length=32, null=True, blank=True, verbose_name=_('Created by'))
date_created = models.DateTimeField(auto_now_add=True, null=True, blank=True, verbose_name=_('Date created'))
date_updated = models.DateTimeField(auto_now=True, verbose_name=_('Date updated'))
class Meta:
abstract = True