31 lines
1.2 KiB
Python
31 lines
1.2 KiB
Python
from datetime import datetime
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from sqlalchemy import DateTime, ForeignKey, Integer, UniqueConstraint, func
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from core.db import Base
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class Cart(Base):
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__tablename__ = "carts"
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
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user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), unique=True)
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created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
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items: Mapped[list["CartItem"]] = relationship(
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"CartItem", back_populates="cart", cascade="all, delete-orphan", lazy="joined"
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)
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class CartItem(Base):
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__tablename__ = "cart_items"
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__table_args__ = (UniqueConstraint("cart_id", "product_id", name="uq_cart_product"),)
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
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cart_id: Mapped[int] = mapped_column(ForeignKey("carts.id", ondelete="CASCADE"))
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product_id: Mapped[int] = mapped_column(ForeignKey("products.id", ondelete="CASCADE"))
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qty: Mapped[int] = mapped_column(Integer, default=1)
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cart: Mapped["Cart"] = relationship("Cart", back_populates="items")
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