# This is an auto-generated Django model module.
# You'll have to do the following manually to clean this up:
#   * Rearrange models' order
#   * Make sure each model has one field with primary_key=True
#   * Make sure each ForeignKey and OneToOneField has `on_delete` set to the desired behavior
#   * Remove `managed = False` lines if you wish to allow Django to create, modify, and delete the table
# Feel free to rename the models, but don't rename db_table values or field names.
from django.db import models
from django.utils import timezone


class DemoUsers(models.Model):
    user_id = models.AutoField(primary_key=True)
    user_name = models.CharField(unique=True, max_length=255, help_text="用户名", verbose_name="用户名")
    first_name = models.CharField(max_length=255, blank=True, null=True, help_text="名", verbose_name="名")
    last_name = models.CharField(max_length=255, blank=True, null=True, help_text="姓", verbose_name="姓")
    email = models.CharField(unique=True, max_length=255, blank=True, null=True, help_text="邮箱地址", verbose_name="邮箱地址")
    hashed_password = models.CharField(max_length=255, help_text="密码哈希值", verbose_name="密码哈希值")
    enabled_flag = models.BooleanField(help_text="是否有效", verbose_name="是否有效")
    effective_from = models.DateTimeField(help_text="有效期从", verbose_name="有效期从")
    effective_to = models.DateTimeField(blank=True, null=True, help_text="有效期至", verbose_name="有效期至")
    created_by = models.CharField(max_length=255)
    creation_date = models.DateTimeField(auto_now_add=True)
    last_updated_by = models.CharField(max_length=255, blank=True, null=True)
    last_update_date = models.DateTimeField(auto_now=True, blank=True, null=True)

    class Meta:
        managed = False
        db_table = 'demo_users'

    def __str__(self):
        return self.user_name

    # def save(self, *args, **kwargs):
    #     # 检查对象是否存在数据库中，即判断是否有主键pk
    #     if self.pk:  # 对象已存在，表示是更新操作
    #         # 在这里执行你希望在更新时发生的自动赋值逻辑
    #         self.last_update_date = timezone.now()  # 你的自定义更新逻辑
    #     else:
    #         self.creation_date = timezone.now()
    #     super().save(*args, **kwargs)  # 调用父类的save方法完成保存