998211c483
- 从服务器拉取完整代码 - 按框架规范整理项目结构 - 配置 Drone CI 测试环境部署 - 包含后端(FastAPI)、前端(Vue3)、管理端 技术栈: Vue3 + TypeScript + FastAPI + MySQL
107 lines
2.9 KiB
Python
107 lines
2.9 KiB
Python
"""
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站内消息通知模型
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用于记录用户的站内消息通知
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"""
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from datetime import datetime
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from typing import Optional
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from sqlalchemy import String, Text, Integer, Boolean, Index, ForeignKey
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.models.base import BaseModel
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class Notification(BaseModel):
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"""
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站内消息通知模型
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用于存储发送给用户的各类站内通知消息，如：
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- 岗位分配通知
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- 课程分配通知
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- 考试提醒通知
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- 系统公告通知
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"""
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__tablename__ = "notifications"
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# 接收用户ID（外键关联到users表）
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user_id: Mapped[int] = mapped_column(
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Integer,
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ForeignKey("users.id", ondelete="CASCADE"),
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nullable=False,
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index=True,
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comment="接收用户ID"
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)
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# 通知标题
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title: Mapped[str] = mapped_column(
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String(200),
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nullable=False,
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comment="通知标题"
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)
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# 通知内容
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content: Mapped[Optional[str]] = mapped_column(
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Text,
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nullable=True,
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comment="通知内容"
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)
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# 通知类型
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# position_assign: 岗位分配
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# course_assign: 课程分配
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# exam_remind: 考试提醒
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# task_assign: 任务分配
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# system: 系统通知
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type: Mapped[str] = mapped_column(
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String(50),
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nullable=False,
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default="system",
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index=True,
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comment="通知类型：position_assign/course_assign/exam_remind/task_assign/system"
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)
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# 是否已读
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is_read: Mapped[bool] = mapped_column(
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Boolean,
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default=False,
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nullable=False,
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index=True,
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comment="是否已读"
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)
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# 关联数据ID（可选，如岗位ID、课程ID等）
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related_id: Mapped[Optional[int]] = mapped_column(
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Integer,
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nullable=True,
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comment="关联数据ID（岗位ID/课程ID等）"
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)
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# 关联数据类型（可选，如position、course等）
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related_type: Mapped[Optional[str]] = mapped_column(
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String(50),
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nullable=True,
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comment="关联数据类型"
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)
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# 发送者ID（可选，系统通知时为空）
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sender_id: Mapped[Optional[int]] = mapped_column(
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Integer,
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ForeignKey("users.id", ondelete="SET NULL"),
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nullable=True,
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comment="发送者用户ID"
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)
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# 关联关系
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user = relationship("User", foreign_keys=[user_id], backref="notifications")
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sender = relationship("User", foreign_keys=[sender_id])
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# 创建索引以优化查询性能
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__table_args__ = (
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Index('idx_notifications_user_read', 'user_id', 'is_read'),
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Index('idx_notifications_user_created', 'user_id', 'created_at'),
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Index('idx_notifications_type', 'type'),
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)
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def __repr__(self):
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return f"<Notification(id={self.id}, user_id={self.user_id}, title={self.title}, is_read={self.is_read})>"
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