59 lines
1.8 KiB
Python
59 lines
1.8 KiB
Python
from typing import TYPE_CHECKING, Optional
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from sqlalchemy import ForeignKey
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from models import BaseModel
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if TYPE_CHECKING:
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from models import Deal, Product
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class Pallet(BaseModel):
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__tablename__ = 'pallets'
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id: Mapped[int] = mapped_column(primary_key=True)
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deal_id: Mapped[int] = mapped_column(ForeignKey('deals.id'))
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deal: Mapped['Deal'] = relationship(back_populates='pallets')
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boxes: Mapped[list['Box']] = relationship(
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back_populates='pallet',
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uselist=True,
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lazy='joined',
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cascade='all, delete-orphan',
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)
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shipping_products: Mapped[list['ShippingProduct']] = relationship(
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back_populates='pallet',
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uselist=True,
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lazy='joined',
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cascade='all, delete-orphan',
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)
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class ShippingProduct(BaseModel):
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__tablename__ = 'shipping_products'
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id: Mapped[int] = mapped_column(primary_key=True)
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quantity: Mapped[int] = mapped_column()
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product_id: Mapped[int] = mapped_column(ForeignKey('products.id'))
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product: Mapped['Product'] = relationship(lazy='joined')
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pallet_id: Mapped[int] = mapped_column(ForeignKey('pallets.id'))
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pallet: Mapped['Pallet'] = relationship(lazy='joined')
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class Box(BaseModel):
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__tablename__ = 'boxes'
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id: Mapped[int] = mapped_column(primary_key=True)
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quantity: Mapped[int] = mapped_column()
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product_id: Mapped[int] = mapped_column(ForeignKey('products.id'))
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product: Mapped['Product'] = relationship(lazy='joined')
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pallet_id: Mapped[Optional[int]] = mapped_column(ForeignKey('pallets.id'))
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pallet: Mapped[Pallet] = relationship(back_populates='boxes')
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deal_id: Mapped[Optional[int]] = mapped_column(ForeignKey('deals.id'))
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deal: Mapped['Deal'] = relationship(back_populates='boxes')
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