4666c4f6d2
Migration sequence: add nullable → backfill via user_id/ai_session chain
→ verify zero NULLs → SET NOT NULL → CREATE INDEX.
Tables: sessions, attachments, session_supporting_data,
session_resolution_outputs
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
41 lines
1.4 KiB
Python
41 lines
1.4 KiB
Python
import uuid
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from datetime import datetime, timezone
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from typing import Optional
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from sqlalchemy import String, Integer, DateTime, ForeignKey
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from sqlalchemy.dialects.postgresql import UUID
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from app.core.database import Base
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class Attachment(Base):
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__tablename__ = "attachments"
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id: Mapped[uuid.UUID] = mapped_column(
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UUID(as_uuid=True),
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primary_key=True,
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default=uuid.uuid4
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)
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session_id: Mapped[uuid.UUID] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("sessions.id"),
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nullable=False
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)
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account_id: Mapped[uuid.UUID] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("accounts.id", ondelete="CASCADE"),
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nullable=False,
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index=True,
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)
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node_id: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
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file_name: Mapped[str] = mapped_column(String(255), nullable=False)
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file_type: Mapped[Optional[str]] = mapped_column(String(50), nullable=True)
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file_size: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
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storage_path: Mapped[Optional[str]] = mapped_column(String(500), nullable=True)
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uploaded_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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default=lambda: datetime.now(timezone.utc)
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)
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# Relationships
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session: Mapped["Session"] = relationship("Session", back_populates="attachments")
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