cb758ad4fd
SQLAlchemy can't resolve ambiguous FK paths when tables have multiple cross-references. All relationships now specify foreign_keys. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
36 lines
1.9 KiB
Python
36 lines
1.9 KiB
Python
"""Fork point model — captures decision points where a session branches."""
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import uuid
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from datetime import datetime, timezone
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from typing import Optional, Any, TYPE_CHECKING
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from sqlalchemy import Text, DateTime, ForeignKey
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from sqlalchemy.dialects.postgresql import UUID, JSONB
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from app.core.database import Base
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if TYPE_CHECKING:
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from app.models.ai_session import AISession
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from app.models.session_branch import SessionBranch
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from app.models.ai_session_step import AISessionStep
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class ForkPoint(Base):
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"""A decision point where a session forks into multiple branches.
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options JSONB: [{label, description, branch_id, status}]
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"""
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__tablename__ = "fork_points"
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id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
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session_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("ai_sessions.id", ondelete="CASCADE"), nullable=False, index=True)
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parent_branch_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("session_branches.id", ondelete="CASCADE"), nullable=False)
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trigger_step_id: Mapped[Optional[uuid.UUID]] = mapped_column(UUID(as_uuid=True), ForeignKey("ai_session_steps.id", ondelete="SET NULL"), nullable=True)
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fork_reason: Mapped[str] = mapped_column(Text, nullable=False)
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options: Mapped[list[dict[str, Any]]] = mapped_column(JSONB, nullable=False, default=list, comment="[{label, description, branch_id, status}]")
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created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
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# Relationships
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session: Mapped["AISession"] = relationship("AISession", foreign_keys=[session_id])
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parent_branch: Mapped["SessionBranch"] = relationship("SessionBranch", foreign_keys=[parent_branch_id])
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trigger_step: Mapped[Optional["AISessionStep"]] = relationship("AISessionStep", foreign_keys=[trigger_step_id])
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