Adriano
e36bbbb7d7
- Station.code: usa UniqueConstraint("code", name="uq_stations_code")
esplicito in __table_args__ invece di unique=True sulla colonna,
per allineamento con la migration 002 ed evitare drift Alembic.
- Aggiunge test test_duplicate_assignment_is_rejected per coprire
il vincolo uq_station_recipe (regola business centrale del modello).
- Sposta import IntegrityError a module-level per consistenza.
Feedback da code-reviewer su Task 2.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
71 lines
2.7 KiB
Python
71 lines
2.7 KiB
Python
"""Station and StationRecipeAssignment models.
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A Station represents a physical control point (typically one per tablet/PC).
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Recipes are assigned to stations so that each station only sees the products
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it is supposed to inspect.
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"""
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from datetime import datetime
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from typing import TYPE_CHECKING, Optional
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from sqlalchemy import Boolean, DateTime, ForeignKey, Integer, String, Text, UniqueConstraint, func
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from database import Base
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if TYPE_CHECKING:
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from models.recipe import Recipe
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class Station(Base):
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__tablename__ = "stations"
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
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code: Mapped[str] = mapped_column(String(100), nullable=False, index=True)
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name: Mapped[str] = mapped_column(String(255), nullable=False)
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location: Mapped[Optional[str]] = mapped_column(String(255), nullable=True)
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notes: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
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active: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True, index=True)
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created_by: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
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created_at: Mapped[datetime] = mapped_column(
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DateTime, nullable=False, server_default=func.now()
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)
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assignments: Mapped[list["StationRecipeAssignment"]] = relationship(
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back_populates="station", cascade="all, delete-orphan", lazy="selectin"
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)
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__table_args__ = (
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UniqueConstraint("code", name="uq_stations_code"),
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{"mysql_engine": "InnoDB", "mysql_charset": "utf8mb4"},
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)
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def __repr__(self) -> str:
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return f"<Station {self.code} '{self.name}'>"
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class StationRecipeAssignment(Base):
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__tablename__ = "station_recipe_assignments"
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
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station_id: Mapped[int] = mapped_column(
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Integer, ForeignKey("stations.id", ondelete="CASCADE"), nullable=False, index=True
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)
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recipe_id: Mapped[int] = mapped_column(
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Integer, ForeignKey("recipes.id", ondelete="CASCADE"), nullable=False, index=True
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)
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assigned_by: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
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assigned_at: Mapped[datetime] = mapped_column(
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DateTime, nullable=False, server_default=func.now()
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)
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station: Mapped["Station"] = relationship(back_populates="assignments")
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recipe: Mapped["Recipe"] = relationship(lazy="selectin")
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__table_args__ = (
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UniqueConstraint("station_id", "recipe_id", name="uq_station_recipe"),
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{"mysql_engine": "InnoDB", "mysql_charset": "utf8mb4"},
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)
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def __repr__(self) -> str:
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return f"<StationRecipeAssignment station={self.station_id} recipe={self.recipe_id}>"
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