giles
a0a0f5ebc2
Declarative relation registry via defrelation s-expressions with cardinality enforcement (one-to-one, one-to-many, many-to-many), registry-aware relate/unrelate/can-relate API endpoints, generic container-nav fragment, and relation-driven UI components. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
from datetime import datetime
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from typing import Optional
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from sqlalchemy.orm import Mapped, mapped_column
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from sqlalchemy import Integer, String, DateTime, Index, JSON, UniqueConstraint, func
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from shared.db.base import Base
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class ContainerRelation(Base):
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__tablename__ = "container_relations"
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__table_args__ = (
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UniqueConstraint(
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"parent_type", "parent_id", "child_type", "child_id",
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name="uq_container_relations_parent_child",
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),
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Index("ix_container_relations_parent", "parent_type", "parent_id"),
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Index("ix_container_relations_child", "child_type", "child_id"),
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Index(
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"ix_container_relations_relation_type",
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"relation_type", "parent_type", "parent_id",
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),
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)
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
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parent_type: Mapped[str] = mapped_column(String(32), nullable=False)
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parent_id: Mapped[int] = mapped_column(Integer, nullable=False)
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child_type: Mapped[str] = mapped_column(String(32), nullable=False)
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child_id: Mapped[int] = mapped_column(Integer, nullable=False)
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relation_type: Mapped[Optional[str]] = mapped_column(String(64), nullable=True, index=False)
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metadata_: Mapped[Optional[dict]] = mapped_column("metadata", JSON, nullable=True)
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sort_order: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
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label: Mapped[Optional[str]] = mapped_column(String(255), nullable=True)
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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server_default=func.now(),
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nullable=False,
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)
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deleted_at: Mapped[Optional[datetime]] = mapped_column(
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DateTime(timezone=True),
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nullable=True,
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)
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