95 lines
2.8 KiB
Python
95 lines
2.8 KiB
Python
from django.db import models
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from django.utils import timezone
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class BaseManager(models.Manager):
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def get_queryset(self):
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return super().get_queryset().filter(is_deleted=False)
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class BaseModel(models.Model):
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"""
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基础模型，所有模型都继承此模型
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"""
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id = models.BigAutoField(primary_key=True, verbose_name="Id", help_text="主键id")
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description = models.TextField(
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null=True, blank=True, verbose_name="描述", help_text="描述"
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)
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created_at = models.DateTimeField(auto_now_add=True, verbose_name="创建时间")
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updated_at = models.DateTimeField(auto_now=True, verbose_name="更新时间")
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is_deleted = models.BooleanField(default=False, verbose_name="是否删除")
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deleted_at = models.DateTimeField(null=True, blank=True, verbose_name="删除时间")
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objects = BaseManager()
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class Meta:
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abstract = True # 将此模型设为抽象模型，方便其他模型继承
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verbose_name = "基础模型"
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def get_all_fields(self):
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return self._meta.fields
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exclude_fields = [
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"id",
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"description",
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"created_at",
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"updated_at",
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"is_deleted",
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"deleted_at",
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]
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def get_need_fields_names(self):
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return [
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field.name
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for field in self.get_all_fields()
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if field.name not in self.exclude_fields
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]
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def to_dict_data(self):
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"""
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需要导出的字段（去除不包含字段）（注意与to_data区分）
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"""
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return {field: getattr(self, field) for field in self.get_need_fields_names()}
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@property
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def DICT_DATA(self):
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return self.to_dict_data()
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def insert(self, request):
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"""
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插入模型
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"""
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assert (
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self.pk is None
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), f"模型{self.__class__.__name__}还没有保存到数据中，不能手动指定ID"
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return self.__class__._default_manager.create(**self.DICT_DATA)
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def update(self, request, update_data: dict[str, any] = None):
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"""
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更新模型
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"""
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assert isinstance(update_data, dict), "update_data必须为字典"
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for key, value in update_data.items():
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# 不允许修改id字段
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if key in ["id"]:
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continue
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if hasattr(self, key):
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setattr(self, key, value)
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self.save()
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return self
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def delete(self, using=None, keep_parents=False):
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"""
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逻辑删除方法，设置 deleted_at 为当前时间
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"""
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self.is_deleted = True
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self.deleted_at = timezone.now()
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self.save()
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def hard_delete(self):
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"""
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物理删除方法，真正删除数据
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"""
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super(BaseModel, self).delete()
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