47 lines
2.0 KiB
Python
47 lines
2.0 KiB
Python
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"""客户评级等级配置模型（需求 2.2.5）。
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评级计算器定位为「仅打分工具，不影响绩效金额」（对照表 #25）：评分记录
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不落库，等级**映射关系**可配置由本表承载。判定规则：按 sort_order 升序取
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第一个 min_score ≤ 总分的等级 —— 单边判定避免区间边界（如 75 分）在
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「≥75 且 ≤89」与「>74 且 <75」两套写法间的重叠/遗漏歧义；max_score 仅展示。
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"""
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from decimal import Decimal
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from sqlalchemy import Integer, Numeric, String
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from sqlalchemy.orm import Mapped, mapped_column
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from app.models.base import BIGINT_UNSIGNED, Base, TimestampMixin, mysql_table_args
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class CustomerRatingGrade(Base, TimestampMixin):
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"""客户评级等级配置表（需求 2.2.5「等级对应关系可配置」）。
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种子四条随迁移初始化：A 优秀 90-100 / B 良好 75-89 / C 合格 60-74 /
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D 待改进 0-59。区间不重叠与 0≤min≤max≤100 由应用层校验。
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"""
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__tablename__ = "customer_rating_grades"
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__table_args__ = mysql_table_args(
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"客户评级等级配置表（等级映射可配置；判定按 sort_order 升序首个 min_score≤总分）"
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)
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id: Mapped[int] = mapped_column(
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BIGINT_UNSIGNED, primary_key=True, autoincrement=True, comment="主键ID"
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)
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grade_name: Mapped[str] = mapped_column(
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String(32), nullable=False, unique=True, comment="等级名称（如 A/优秀）"
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)
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min_score: Mapped[Decimal] = mapped_column(
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Numeric(5, 1),
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nullable=False,
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comment="总分下限（含）；判定=按 sort_order 升序首个 min_score ≤ 总分",
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)
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max_score: Mapped[Decimal] = mapped_column(
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Numeric(5, 1), nullable=False, comment="总分上限（展示用）"
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)
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sort_order: Mapped[int] = mapped_column(
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Integer, nullable=False, server_default="0", comment="排序（判定顺序，升序）"
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)
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remark: Mapped[str | None] = mapped_column(String(255), comment="说明")
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