2026-03-21 10:13:29 +08:00
|
|
|
from sqlalchemy import Column, String, Text, Integer, ForeignKey, JSON
|
|
|
|
|
from sqlalchemy.orm import relationship
|
|
|
|
|
from app.models.base import BaseModel
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class Conversation(BaseModel):
|
|
|
|
|
__tablename__ = "conversations"
|
|
|
|
|
|
|
|
|
|
user_id = Column(String(36), ForeignKey("users.id"), nullable=False, index=True)
|
|
|
|
|
title = Column(String(500), nullable=True)
|
|
|
|
|
message_count = Column(Integer, default=0)
|
2026-04-03 13:14:59 +08:00
|
|
|
agent_state = Column(JSON, nullable=True)
|
2026-03-21 10:13:29 +08:00
|
|
|
|
|
|
|
|
messages = relationship("Message", back_populates="conversation", cascade="all, delete-orphan")
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class Message(BaseModel):
|
|
|
|
|
__tablename__ = "messages"
|
|
|
|
|
|
|
|
|
|
conversation_id = Column(String(36), ForeignKey("conversations.id"), nullable=False, index=True)
|
|
|
|
|
role = Column(String(20), nullable=False) # user, assistant, system
|
|
|
|
|
content = Column(Text, nullable=False)
|
|
|
|
|
model = Column(String(100), nullable=True)
|
|
|
|
|
tokens_used = Column(Integer, nullable=True)
|
|
|
|
|
attachments = Column(JSON, nullable=True) # 新增: [{file_id, filename, file_type, file_size}]
|
|
|
|
|
|
|
|
|
|
conversation = relationship("Conversation", back_populates="messages")
|
