from django.db import models
from django.utils import timezone
from safesite.models import User

class BaseModel(models.Model):
    """
    基本表
    """
    create_time = models.DateTimeField(
        default=timezone.now, verbose_name='创建时间', help_text='创建时间')
    update_time = models.DateTimeField(
        auto_now=True, verbose_name='修改时间', help_text='修改时间')
    is_deleted = models.BooleanField(
        default=False, verbose_name='删除标记', help_text='删除标记')

    class Meta:
        abstract = True

class CommonModel(BaseModel):
    """
    业务用基本表A,包含create_by, update_by字段
    """
    create_by = models.ForeignKey(
        User, null=True, blank=True, on_delete=models.SET_NULL, verbose_name='创建人', related_name= '%(class)s_create_by')
    update_by = models.ForeignKey(
        User, null=True, blank=True, on_delete=models.SET_NULL, verbose_name='最后编辑人', related_name= '%(class)s_update_by')

    class Meta:
        abstract = True