58 lines
1.8 KiB
Python
58 lines
1.8 KiB
Python
from django.db import models
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from django.utils import timezone
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class SoftDeleteQuerySet(models.QuerySet):
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def delete(self):
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return super().update(is_deleted=True, deleted_at=timezone.now())
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def hard_delete(self):
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return super().delete()
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def alive(self):
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return self.filter(is_deleted=False)
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def dead(self):
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return self.filter(is_deleted=True)
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class SoftDeleteManager(models.Manager):
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def __init__(self, *args, **kwargs):
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self.alive_only = kwargs.pop('alive_only', None)
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super().__init__(*args, **kwargs)
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def get_queryset(self):
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if self.alive_only is True:
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return SoftDeleteQuerySet(self.model).filter(is_deleted=False)
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if self.alive_only is False:
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return SoftDeleteQuerySet(self.model).filter(is_deleted=True)
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if self.alive_only is None:
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return SoftDeleteQuerySet(self.model)
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def hard_delete(self):
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return self.get_queryset().hard_delete()
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class BaseModel(models.Model):
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created_at = models.DateTimeField(auto_now_add=True)
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updated_at = models.DateTimeField(auto_now=True)
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is_deleted = models.BooleanField(default=False)
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deleted_at = models.DateTimeField(null=True, blank=True)
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objects = SoftDeleteManager(alive_only=True)
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all_objects = SoftDeleteManager(alive_only=None)
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deleted_objects = SoftDeleteManager(alive_only=False)
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class Meta:
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abstract = True
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def delete(self, using=None, keep_parents=False):
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self.is_deleted = True
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self.deleted_at = timezone.now()
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self.save(using=using)
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def hard_delete(self, using=None, keep_parents=False):
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super().delete(using=using, keep_parents=keep_parents)
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def restore(self):
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self.is_deleted = False
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self.deleted_at = None
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self.save()
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