OnlineJudge/announcement/models.py

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# coding=utf-8
from django.db import models
from account.models import User
from group.models import Group
class Announcement(models.Model):
# 标题
title = models.CharField(max_length=50)
# 公告的内容 HTML 格式
content = models.TextField()
# 创建时间
create_time = models.DateTimeField(auto_now_add=True)
# 这个公告是谁创建的
created_by = models.ForeignKey(User)
# 最后更新时间
last_update_time = models.DateTimeField(auto_now=True)
# 是否可见 false的话相当于删除
visible = models.BooleanField(default=True)
# 公告可见范围 True 是全局可见 False 是部分小组可见,需要在下面的字段中存储可见的小组
is_global = models.BooleanField()
groups = models.ManyToManyField(Group)
class Meta:
db_table = "announcement"