初始提交：极码 GeekCode 全栈项目（FastAPI + Vue3）

backend/models/notification.py

@@ -0,0 +1,17 @@
+"""消息通知模型"""
+from sqlalchemy import Column, Integer, String, Text, Boolean, DateTime, ForeignKey
+from sqlalchemy.sql import func
+from database import Base
+
+
+class Notification(Base):
+    __tablename__ = "notifications"
+
+    id = Column(Integer, primary_key=True, index=True)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False, index=True)
+    type = Column(String(20), nullable=False)  # like / comment / follow / system
+    content = Column(Text, default="")
+    related_id = Column(Integer, default=None)  # 关联的帖子/用户ID
+    from_user_id = Column(Integer, ForeignKey("users.id"), default=None)  # 触发通知的用户
+    is_read = Column(Boolean, default=False, index=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())