57 lines
2.2 KiB
Python
57 lines
2.2 KiB
Python
"""
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Modelo ORM para la lista de materiales (BOM) de una parte - Anexo 24
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"""
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from typing import TYPE_CHECKING, Optional
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from decimal import Decimal
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from api.v1.common.base_models import TenantScopedMixin, TimestampMixin
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from core.database import Base
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from sqlalchemy import (
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Integer,
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Numeric,
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String,
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PrimaryKeyConstraint,
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ForeignKeyConstraint
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)
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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if TYPE_CHECKING:
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from api.v1.modules.a76.parts.models import Part
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class BillOfMaterial(Base, TenantScopedMixin, TimestampMixin):
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"""
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Tabla inv_bom: Lista de materiales para una parte.
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"""
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__tablename__ = "inv_bom"
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__table_args__ = (
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PrimaryKeyConstraint("id", name="inv_bom_pkey"),
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ForeignKeyConstraint(
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["parent_part_id"], ["a76.parts.id"], name="fk_inv_bom_parent"
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),
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ForeignKeyConstraint(
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["component_part_id"], ["a76.parts.id"], name="fk_inv_bom_component"
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),
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{"schema": "a24", "extend_existing": True},
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)
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
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parent_part_id: Mapped[int] = mapped_column(Integer, nullable=False)
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component_part_id: Mapped[int] = mapped_column(Integer, nullable=False)
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quantity: Mapped[Decimal] = mapped_column(Numeric(19, 8), default=Decimal('1.0'))
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# Nuevos campos Legacy
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uom_code: Mapped[str] = mapped_column(String(5), nullable=False)
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procedure_type: Mapped[Optional[str]] = mapped_column(String(10), nullable=True) # TEMPORAL, DEFINITIVA, CTM
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is_percentage: Mapped[bool] = mapped_column(default=True)
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raw_material: Mapped[Optional[Decimal]] = mapped_column(Numeric(19, 8), nullable=True)
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waste: Mapped[Optional[Decimal]] = mapped_column(Numeric(19, 8), nullable=True)
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merma: Mapped[Optional[Decimal]] = mapped_column(Numeric(19, 8), nullable=True)
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# Relaciones
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parent_part: Mapped["Part"] = relationship("Part", foreign_keys=[parent_part_id], back_populates="bom_items")
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component_part: Mapped["Part"] = relationship("Part", foreign_keys=[component_part_id])
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def __repr__(self) -> str:
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return f"<BillOfMaterial(id={self.id}, parent={self.parent_part_id}, component={self.component_part_id}, uom={self.uom_code})>"
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