47 lines
1.8 KiB
Python
47 lines
1.8 KiB
Python
from __future__ import annotations
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from datetime import datetime
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from sqlalchemy import DateTime, Float, ForeignKey, String, Text, UniqueConstraint
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.db.session import Base
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class Mix(Base):
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__tablename__ = "mixes"
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id: Mapped[int] = mapped_column(primary_key=True)
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tenant_id: Mapped[str] = mapped_column(String(64), default="default")
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client_name: Mapped[str] = mapped_column(String(255))
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name: Mapped[str] = mapped_column(String(255), index=True)
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status: Mapped[str] = mapped_column(String(32), default="draft")
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version: Mapped[int] = mapped_column(default=1)
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notes: Mapped[str | None] = mapped_column(Text, nullable=True)
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created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
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ingredients: Mapped[list["MixIngredient"]] = relationship(
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back_populates="mix",
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cascade="all, delete-orphan",
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)
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products: Mapped[list["Product"]] = relationship(back_populates="mix")
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class MixIngredient(Base):
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__tablename__ = "mix_ingredients"
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__table_args__ = (UniqueConstraint("mix_id", "raw_material_id", name="uq_mix_ingredient"),)
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id: Mapped[int] = mapped_column(primary_key=True)
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tenant_id: Mapped[str] = mapped_column(String(64), default="default")
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mix_id: Mapped[int] = mapped_column(ForeignKey("mixes.id"), index=True)
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raw_material_id: Mapped[int] = mapped_column(ForeignKey("raw_materials.id"), index=True)
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quantity_kg: Mapped[float] = mapped_column(Float)
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notes: Mapped[str | None] = mapped_column(Text, nullable=True)
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mix: Mapped[Mix] = relationship(back_populates="ingredients")
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raw_material: Mapped["RawMaterial"] = relationship()
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from app.models.product import Product # noqa: E402
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from app.models.raw_material import RawMaterial # noqa: E402
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