27 lines
1.0 KiB
Python
27 lines
1.0 KiB
Python
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from sqlalchemy import Column, String, Text, Integer, ForeignKey, JSON
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from sqlalchemy.orm import relationship
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from app.models.base import BaseModel
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class Conversation(BaseModel):
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__tablename__ = "conversations"
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user_id = Column(String(36), ForeignKey("users.id"), nullable=False, index=True)
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title = Column(String(500), nullable=True)
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message_count = Column(Integer, default=0)
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messages = relationship("Message", back_populates="conversation", cascade="all, delete-orphan")
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class Message(BaseModel):
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__tablename__ = "messages"
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conversation_id = Column(String(36), ForeignKey("conversations.id"), nullable=False, index=True)
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role = Column(String(20), nullable=False) # user, assistant, system
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content = Column(Text, nullable=False)
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model = Column(String(100), nullable=True)
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tokens_used = Column(Integer, nullable=True)
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attachments = Column(JSON, nullable=True) # 新增: [{file_id, filename, file_type, file_size}]
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conversation = relationship("Conversation", back_populates="messages")
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