Files
ai-contract-platform/backend/app/models/conversation.py
T
2026-04-24 13:44:17 +08:00

25 lines
1.0 KiB
Python

from datetime import datetime, timezone
from typing import Optional
from sqlalchemy import DateTime, Integer, String
from sqlalchemy.orm import Mapped, mapped_column
from app.db import Base
class Conversation(Base):
__tablename__ = "conversations"
id: Mapped[str] = mapped_column(String(64), primary_key=True)
tenant_id: Mapped[str] = mapped_column(String(64), nullable=False, index=True)
user_id: Mapped[str] = mapped_column(String(64), nullable=False, index=True)
title: Mapped[Optional[str]] = mapped_column(String(255), nullable=True)
message_count: Mapped[int] = mapped_column(Integer, default=0)
last_message_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True, index=True)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
updated_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True),
default=lambda: datetime.now(timezone.utc),
onupdate=lambda: datetime.now(timezone.utc),
)