初始版本-前端

backend/app/models/chat.py

@@ -0,0 +1,22 @@
+"""
+聊天消息模型
+"""
+from datetime import datetime
+from typing import Optional
+from sqlmodel import SQLModel, Field, Relationship
+from .user import User
+
+
+class ChatMessage(SQLModel, table=True):
+    """聊天消息表"""
+    __tablename__ = "chat_messages"
+    
+    id: Optional[int] = Field(default=None, primary_key=True)
+    content: str
+    sent_at: datetime = Field(default_factory=datetime.now)
+    user_id: int = Field(foreign_key="users.id", index=True)
+    room: str = Field(max_length=50, default="main", index=True)
+    
+    # 关系
+    user: Optional[User] = Relationship()
+