68 lines
1.7 KiB
Python
68 lines
1.7 KiB
Python
"""项目人工成本模型
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管理项目的人工成本配置
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"""
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from typing import Optional, TYPE_CHECKING
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from decimal import Decimal
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from sqlalchemy import BigInteger, Integer, String, 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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from app.models.staff_level import StaffLevel
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class ProjectLaborCost(BaseModel):
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"""项目人工成本表"""
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__tablename__ = "project_labor_costs"
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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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index=True,
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comment="项目ID"
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)
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staff_level_id: Mapped[int] = mapped_column(
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BigInteger,
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ForeignKey("staff_levels.id"),
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nullable=False,
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index=True,
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comment="人员级别ID"
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)
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duration_minutes: Mapped[int] = mapped_column(
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Integer,
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nullable=False,
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comment="操作时长（分钟）"
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)
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hourly_rate: Mapped[Decimal] = mapped_column(
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DECIMAL(10, 2),
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nullable=False,
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comment="时薪（记录时的快照）"
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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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comment="人工成本 = duration/60 * hourly_rate"
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)
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remark: Mapped[Optional[str]] = mapped_column(
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String(200),
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nullable=True,
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comment="备注"
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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="labor_costs"
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)
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staff_level: Mapped["StaffLevel"] = relationship(
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"StaffLevel",
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back_populates="project_labor_costs"
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)
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