73 lines
1.8 KiB
Python
73 lines
1.8 KiB
Python
"""项目成本汇总模型
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存储项目的成本计算结果
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"""
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from datetime import datetime
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from decimal import Decimal
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from typing import TYPE_CHECKING
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from sqlalchemy import BigInteger, DateTime, DECIMAL, ForeignKey
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.models.base import BaseModel
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if TYPE_CHECKING:
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from app.models.project import Project
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class ProjectCostSummary(BaseModel):
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"""项目成本汇总表"""
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__tablename__ = "project_cost_summaries"
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project_id: Mapped[int] = mapped_column(
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BigInteger,
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ForeignKey("projects.id", ondelete="CASCADE"),
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nullable=False,
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unique=True,
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index=True,
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comment="项目ID"
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)
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material_cost: Mapped[Decimal] = mapped_column(
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DECIMAL(12, 2),
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nullable=False,
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default=0,
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comment="耗材成本"
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)
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equipment_cost: Mapped[Decimal] = mapped_column(
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DECIMAL(12, 2),
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nullable=False,
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default=0,
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comment="设备折旧成本"
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)
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labor_cost: Mapped[Decimal] = mapped_column(
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DECIMAL(12, 2),
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nullable=False,
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default=0,
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comment="人工成本"
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)
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fixed_cost_allocation: Mapped[Decimal] = mapped_column(
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DECIMAL(12, 2),
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nullable=False,
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default=0,
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comment="固定成本分摊"
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)
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total_cost: Mapped[Decimal] = mapped_column(
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DECIMAL(12, 2),
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nullable=False,
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default=0,
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comment="总成本（最低成本线）"
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)
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calculated_at: Mapped[datetime] = mapped_column(
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DateTime,
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nullable=False,
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comment="计算时间"
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)
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# 关系
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project: Mapped["Project"] = relationship(
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"Project",
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back_populates="cost_summary"
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)
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