feat(business): 客户评级等级映射配置接口(区间重叠判定/名称唯一)
- 判定=按 sort_order 升序首个 min_score≤总分,边界相邻不算重叠 - 新增同样执行重叠判定(判定表语义下插出重叠即脏配置) - 等级配置无下游引用(评级为纯计算器,对照表 #25),允许清空 Co-Authored-By: Claude Code <noreply@anthropic.com>
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8
backend/app/api/v1/business/__init__.py
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backend/app/api/v1/business/__init__.py
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"""业务数据管理接口(需求 2.2)。
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挂载于 `/api/v1/business/*`,含业务单据维护、客户评级等级配置等业务数据入口。
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与 `api/v1/system` 的权限分工:业务数据是**业务操作**,登录即可访问
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(不要求管理员);写操作同样经 `RequestMetaDep` 带入请求元信息,
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由 service 层写入操作日志。
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"""
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74
backend/app/api/v1/business/ratings.py
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backend/app/api/v1/business/ratings.py
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"""客户评级等级配置接口(需求 2.2.5)。
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评级计算器的等级映射判定表:判定按 sort_order 升序取首个 min_score ≤ 总分
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的等级,max_score 仅展示。区间合法(0≤min≤max≤100)与互不重叠由后端校验
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—— 前端表单只是展示约束,后端校验是唯一防线。
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列表不分页全量返回:等级映射是判定表,数量个位数,分页无意义。
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业务数据属业务操作,登录用户即可访问(区别于系统管理模块的 AdminUser);
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写操作经 RequestMetaDep 带入请求元信息,由 service 层写入操作日志。
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"""
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from typing import Annotated
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from fastapi import APIRouter, Depends, Path
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from app.api.deps import DbSession, RequestMetaDep, get_current_user
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from app.core.response import ApiResponse, ok
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from app.models import User
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from app.schemas.rating import RatingGradeCreateIn, RatingGradeOut, RatingGradeUpdateIn
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from app.services import rating_service
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CurrentUser = Annotated[User, Depends(get_current_user)]
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router = APIRouter(prefix="/rating-grades", tags=["客户评级"])
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@router.get("", response_model=ApiResponse[list[RatingGradeOut]], summary="评级等级列表")
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def list_grades(
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session: DbSession,
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_: CurrentUser,
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) -> ApiResponse[list[RatingGradeOut]]:
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"""全量等级列表,按判定顺序(sort_order 升序)返回,不分页。"""
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return ok(rating_service.list_grades(session))
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@router.post("", response_model=ApiResponse[RatingGradeOut], summary="新增评级等级")
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def create_grade(
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session: DbSession,
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current_user: CurrentUser,
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payload: RatingGradeCreateIn,
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meta: RequestMetaDep,
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) -> ApiResponse[RatingGradeOut]:
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"""新增评级等级。区间须 0≤min≤max≤100 且与既有等级不重叠。"""
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return ok(
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rating_service.create_grade(session, payload, operator=current_user, meta=meta),
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message="评级等级已创建",
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)
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@router.put("/{grade_id}", response_model=ApiResponse[RatingGradeOut], summary="编辑评级等级")
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def update_grade(
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session: DbSession,
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current_user: CurrentUser,
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grade_id: Annotated[int, Path(ge=1)],
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payload: RatingGradeUpdateIn,
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meta: RequestMetaDep,
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) -> ApiResponse[RatingGradeOut]:
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"""编辑评级等级(全量替换)。区间须合法且与其他等级不重叠。"""
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return ok(
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rating_service.update_grade(session, grade_id, payload, operator=current_user, meta=meta),
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message="已保存",
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)
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@router.delete("/{grade_id}", response_model=ApiResponse[None], summary="删除评级等级")
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def delete_grade(
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session: DbSession,
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current_user: CurrentUser,
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grade_id: Annotated[int, Path(ge=1)],
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meta: RequestMetaDep,
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) -> ApiResponse[None]:
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"""物理删除评级等级(等级表无下游引用,允许清空,理由见 service 说明)。"""
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rating_service.delete_grade(session, grade_id, operator=current_user, meta=meta)
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return ok(message="评级等级已删除")
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58
backend/app/repositories/rating_repository.py
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backend/app/repositories/rating_repository.py
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"""客户评级等级配置数据访问。
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本层只 flush 不 commit —— 事务边界由 services 层控制。
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"""
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from sqlalchemy import select
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from sqlalchemy.orm import Session
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from app.models import CustomerRatingGrade
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# ==================== 读取 ====================
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def list_all(session: Session) -> list[CustomerRatingGrade]:
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"""全量等级,按 sort_order 升序、id 兜底(同序次序稳定)。
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不分页:等级映射是判定表,数量个位数,分页无意义。
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"""
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stmt = select(CustomerRatingGrade).order_by(
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CustomerRatingGrade.sort_order, CustomerRatingGrade.id
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)
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return list(session.execute(stmt).scalars())
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def get_by_id(session: Session, grade_id: int) -> CustomerRatingGrade | None:
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"""按主键查询。
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等级表无下游引用(评级是纯计算器不落评分记录),无需 ``for_update``
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锁行 —— product_repository 锁行防的是并发引用悬空,此处不存在该风险。
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"""
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return session.get(CustomerRatingGrade, grade_id)
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def get_by_name(session: Session, grade_name: str) -> CustomerRatingGrade | None:
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"""按等级名称查询。
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grade_name 是 uk_customer_rating_grades_grade_name 唯一键的键值,先查
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用于给出即时业务提示;并发窗口仍存在,最终由 IntegrityError 兜底
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(见 rating_service)。
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"""
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stmt = select(CustomerRatingGrade).where(CustomerRatingGrade.grade_name == grade_name)
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return session.execute(stmt).scalar_one_or_none()
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# ==================== 写入 ====================
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def create(session: Session, grade: CustomerRatingGrade) -> CustomerRatingGrade:
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"""新增等级。只 flush 以取得自增 id。"""
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session.add(grade)
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session.flush()
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return grade
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def delete(session: Session, grade: CustomerRatingGrade) -> None:
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"""物理删除等级。等级表无下游引用,调用方无需引用保护校验。"""
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session.delete(grade)
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session.flush()
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backend/app/schemas/rating.py
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backend/app/schemas/rating.py
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"""客户评级等级配置的请求/响应模型。
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分值(min_score/max_score)入参出参一律用**字符串**承载:前端 JS 的 number
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无法精确表示全部十进制小数,字符串是分值红线的入口闸门,Decimal 转换统一
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收敛在 service 层(与 schemas/product.py 同一口径)。
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注意:schema 只拦**格式**(可解析、有限数);0≤min≤max≤100 与区间不重叠
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是横跨两字段/多行的业务值域规则,在 service 层审计上下文内统一判定 ——
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值域校验失败的 400 也要留痕(2026-10-13 定稿口径)。
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"""
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from datetime import datetime
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from decimal import Decimal, InvalidOperation
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from pydantic import BaseModel, ConfigDict, Field, field_validator
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def _parse_score(value: str, *, label: str) -> str:
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"""分值字符串格式校验:必须可被 Decimal 解析且为有限数。
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``NaN`` 参与比较抛 InvalidOperation、``Infinity`` 落库即溢出,均须在
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入口用 ``is_finite()`` 拦下(与 schemas/product.py 的 _parse_non_negative
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同口径);非负与 ≤100 属业务值域,留给 service 层在审计上下文内判定。
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"""
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try:
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score = Decimal(value.strip())
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except InvalidOperation as exc:
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raise ValueError(f"{label}必须是有效数字:{value}") from exc
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if not score.is_finite():
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raise ValueError(f"{label}必须为有限数字:{value}")
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return value
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class RatingGradeOut(BaseModel):
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"""评级等级响应(列表直出)。分值按红线以字符串出参。"""
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id: int
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grade_name: str
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min_score: str
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max_score: str
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sort_order: int
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remark: str | None = None
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create_time: datetime
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update_time: datetime
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class RatingGradeCreateIn(BaseModel):
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"""新增评级等级。
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min_score/max_score 必填:区间是判定表的判定依据,缺省无从判定。
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sort_order 缺省 0(列默认值同源),判定按其升序取首个命中等级。
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"""
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model_config = ConfigDict(str_strip_whitespace=True)
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grade_name: str = Field(min_length=1, max_length=32, description="等级名称(如 A/优秀)")
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min_score: str = Field(description="总分下限(含),0-100 数字字符串")
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max_score: str = Field(description="总分上限(展示用),0-100 数字字符串")
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sort_order: int = Field(default=0, ge=0, description="判定顺序,升序")
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remark: str | None = Field(default=None, max_length=255, description="说明")
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@field_validator("min_score")
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@classmethod
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def _check_min_score(cls, value: str) -> str:
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"""总分下限须为有限数字(值域 0-100 由 service 层判定)。"""
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return _parse_score(value, label="总分下限")
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@field_validator("max_score")
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@classmethod
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def _check_max_score(cls, value: str) -> str:
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"""总分上限须为有限数字(值域 0-100 由 service 层判定)。"""
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return _parse_score(value, label="总分上限")
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class RatingGradeUpdateIn(RatingGradeCreateIn):
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"""编辑评级等级。
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前端表单全量提交,故为全量替换语义;等级表无启停状态列,字段与新增一致。
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"""
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279
backend/app/services/rating_service.py
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backend/app/services/rating_service.py
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"""客户评级等级配置业务编排。
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评级计算器定位(对照表 #25):仅打分工具、不影响绩效金额,评分记录不落库
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——本表承载的等级映射是**判定表**,判定规则为按 sort_order 升序取首个
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min_score ≤ 总分的等级,max_score 仅展示。两条硬约束(违反会算错等级):
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- 分值全程 ``Decimal``:入参出参 str、schema 拦格式,service 层负责字符串
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到 Decimal 的转换与落库;0≤min≤max≤100 的区间校验在**审计上下文内**
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完成,失败的 400 同样留痕(2026-10-13 定稿口径)
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- 区间互不重叠:重叠会让同一总分命中多个等级(或两段都跳过),判定表
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失效。判定为**闭区间两两相交**:任一其他等级满足
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``other.min_score <= 新 max 且 新 min <= other.max_score`` 即重叠。
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边界相邻不算重叠(前段 max=89、后段 min=90)—— 种子 A/B/C/D 即按
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相邻铺满 0-100,且判定本身是单边 min_score ≤ 总分,边界归 sort_order
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靠前的等级,相邻无歧义
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删除允许清空:等级表无下游引用(评分记录不落库,判定只读本表现值、不
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回溯历史快照),物理删除无悬空风险;全部删空后计算器只显示总分、不出
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等级(前端已对应提示),故不强制保留任何一条。
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"""
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import logging
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from decimal import Decimal
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from sqlalchemy.exc import IntegrityError
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from sqlalchemy.orm import Session
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from app.core.constants import (
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ACTION_CREATE,
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ACTION_DELETE,
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ACTION_UPDATE,
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MODULE_RATING,
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)
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from app.core.exceptions import BadRequestError, NotFoundError
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from app.models import CustomerRatingGrade, User
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from app.repositories import rating_repository
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from app.schemas.rating import RatingGradeCreateIn, RatingGradeOut, RatingGradeUpdateIn
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from app.services import audit_service
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from app.services.audit_service import AuditRecord, RequestMeta
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logger = logging.getLogger(__name__)
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# 分值域上下界(Decimal 常量,禁用 float 参与比较)
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_SCORE_FLOOR = Decimal("0")
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_SCORE_CEIL = Decimal("100")
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# 唯一键冲突的 MySQL 错误码(pymysql 原始异常 args 首位)
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_ERR_DUP_ENTRY = 1062
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def _to_out(grade: CustomerRatingGrade) -> RatingGradeOut:
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"""ORM 对象转响应模型。分值 Decimal → str(分值红线出参口径)。"""
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return RatingGradeOut(
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id=grade.id,
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grade_name=grade.grade_name,
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min_score=str(grade.min_score),
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max_score=str(grade.max_score),
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sort_order=grade.sort_order,
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remark=grade.remark,
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create_time=grade.create_time,
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update_time=grade.update_time,
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)
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def _to_decimal(value: str) -> Decimal:
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"""数字字符串转 Decimal。
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入参已 str 化再进 Decimal:即使上游口径变化传入数字类型,也不经 float
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二进制近似,分值红线在最后一道转换处仍然成立。schema 已保证可解析,
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此处不再重复校验。
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"""
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return Decimal(str(value))
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def _ensure_score_range(min_score: Decimal, max_score: Decimal) -> None:
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"""区间合法性:0 ≤ min_score ≤ max_score ≤ 100。
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超界/倒挂任一不满足即「分值区间不合法」——统一一条消息不区分具体
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越界方式,前端据此整体提示。须在审计上下文内调用,失败也要留痕。
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"""
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if not (_SCORE_FLOOR <= min_score <= max_score <= _SCORE_CEIL):
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raise BadRequestError("分值区间不合法")
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def _ensure_no_overlap(
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grades: list[CustomerRatingGrade],
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new_min: Decimal,
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new_max: Decimal,
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*,
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exclude_id: int | None = None,
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) -> None:
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"""新区间与既有等级**不得重叠**(闭区间两两相交判定)。
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任一其他等级满足 ``other.min_score <= new_max 且 new_min <= other.max_score``
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即重叠,400 并点名冲突等级,便于前端定位到具体行。边界相邻不算重叠
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(见模块 docstring)。exclude_id 供编辑时排除自身。
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:raises BadRequestError: 分值区间与等级 X 重叠
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"""
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for other in grades:
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if exclude_id is not None and other.id == exclude_id:
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continue
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if other.min_score <= new_max and new_min <= other.max_score:
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raise BadRequestError(f"分值区间与等级 {other.grade_name} 重叠")
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def _is_duplicate_entry(exc: IntegrityError) -> bool:
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"""判断 IntegrityError 是否为 MySQL 1062(唯一键冲突)。
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只有 1062 是「已存在」语义,可转业务提示;其余完整性错误(外键、
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数据溢出等)语义未知,必须原样上抛交由全局处理器记 500,不能吞成 400。
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"""
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orig_args = getattr(exc.orig, "args", ())
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return bool(orig_args) and orig_args[0] == _ERR_DUP_ENTRY
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def _raise_if_duplicate(exc: IntegrityError) -> None:
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"""唯一键冲突统一转业务提示;其余完整性错误原样重抛。"""
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if _is_duplicate_entry(exc):
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raise BadRequestError("该等级名称已存在") from exc
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raise exc
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def list_grades(session: Session) -> list[RatingGradeOut]:
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"""全量等级列表,按判定顺序(sort_order 升序)直出。
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不分页:等级映射是判定表,数量个位数,分页无意义。
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"""
|
||||
return [_to_out(grade) for grade in rating_repository.list_all(session)]
|
||||
|
||||
|
||||
def create_grade(
|
||||
session: Session,
|
||||
payload: RatingGradeCreateIn,
|
||||
*,
|
||||
operator: User,
|
||||
meta: RequestMeta | None = None,
|
||||
) -> RatingGradeOut:
|
||||
"""新增评级等级。
|
||||
|
||||
区间须 0≤min≤max≤100 且与既有等级不重叠(新增同样判重叠:判定表
|
||||
语义下重叠即脏配置,没有「先停用旧区间」之类的两阶段配置手段)。
|
||||
|
||||
:raises BadRequestError: 分值区间不合法 / 分值区间与等级 X 重叠 / 该等级名称已存在
|
||||
"""
|
||||
with audit_service.audit(
|
||||
session,
|
||||
operator=operator,
|
||||
record=AuditRecord(
|
||||
module=MODULE_RATING,
|
||||
action=ACTION_CREATE,
|
||||
summary=f"新增评级等级 {payload.grade_name}",
|
||||
request_data=payload.model_dump(exclude_none=True),
|
||||
),
|
||||
meta=meta,
|
||||
):
|
||||
# 值域校验在审计上下文内:分值非法的 400 也要留痕(成功与失败都记)
|
||||
new_min = _to_decimal(payload.min_score)
|
||||
new_max = _to_decimal(payload.max_score)
|
||||
_ensure_score_range(new_min, new_max)
|
||||
_ensure_no_overlap(rating_repository.list_all(session), new_min, new_max)
|
||||
if rating_repository.get_by_name(session, payload.grade_name) is not None:
|
||||
raise BadRequestError("该等级名称已存在")
|
||||
|
||||
grade = CustomerRatingGrade(
|
||||
grade_name=payload.grade_name,
|
||||
min_score=new_min,
|
||||
max_score=new_max,
|
||||
sort_order=payload.sort_order,
|
||||
remark=payload.remark,
|
||||
)
|
||||
try:
|
||||
rating_repository.create(session, grade)
|
||||
# 响应与后置动作全部在 commit 之前完成(见 product_service 同处说明)
|
||||
out = _to_out(grade)
|
||||
session.commit()
|
||||
except IntegrityError as exc:
|
||||
# 先查后写不是原子操作:并发提交同名等级会撞 uk_customer_rating_grades_grade_name
|
||||
session.rollback()
|
||||
_raise_if_duplicate(exc)
|
||||
|
||||
logger.info("新增评级等级 | grade_id=%s | name=%s", grade.id, payload.grade_name)
|
||||
return out
|
||||
|
||||
|
||||
def update_grade(
|
||||
session: Session,
|
||||
grade_id: int,
|
||||
payload: RatingGradeUpdateIn,
|
||||
*,
|
||||
operator: User,
|
||||
meta: RequestMeta | None = None,
|
||||
) -> RatingGradeOut:
|
||||
"""编辑评级等级(全量替换)。
|
||||
|
||||
区间与其他等级不得重叠 —— 重叠判定以**修改后的区间**对全部既有等级
|
||||
(排除自身)两两相交,命中即 400 并点名冲突等级。
|
||||
|
||||
:raises NotFoundError: 评级等级不存在
|
||||
:raises BadRequestError: 分值区间不合法 / 分值区间与等级 X 重叠 / 该等级名称已存在
|
||||
"""
|
||||
grade = rating_repository.get_by_id(session, grade_id)
|
||||
with audit_service.audit(
|
||||
session,
|
||||
operator=operator,
|
||||
record=AuditRecord(
|
||||
module=MODULE_RATING,
|
||||
action=ACTION_UPDATE,
|
||||
summary=f"修改评级等级 {grade.grade_name if grade else f'#{grade_id}'}",
|
||||
request_data=payload.model_dump(exclude_none=True),
|
||||
),
|
||||
meta=meta,
|
||||
):
|
||||
# 值域校验在审计上下文内(同 create 口径)
|
||||
new_min = _to_decimal(payload.min_score)
|
||||
new_max = _to_decimal(payload.max_score)
|
||||
_ensure_score_range(new_min, new_max)
|
||||
if grade is None:
|
||||
raise NotFoundError("评级等级不存在")
|
||||
|
||||
_ensure_no_overlap(
|
||||
rating_repository.list_all(session), new_min, new_max, exclude_id=grade_id
|
||||
)
|
||||
existed = rating_repository.get_by_name(session, payload.grade_name)
|
||||
if existed is not None and existed.id != grade_id:
|
||||
raise BadRequestError("该等级名称已存在")
|
||||
|
||||
grade.grade_name = payload.grade_name
|
||||
grade.min_score = new_min
|
||||
grade.max_score = new_max
|
||||
grade.sort_order = payload.sort_order
|
||||
grade.remark = payload.remark
|
||||
out = _to_out(grade)
|
||||
try:
|
||||
session.commit()
|
||||
except IntegrityError as exc:
|
||||
# 改名可能撞 uk_customer_rating_grades_grade_name(本行改值与他人既有数据重合)
|
||||
session.rollback()
|
||||
_raise_if_duplicate(exc)
|
||||
|
||||
logger.info("修改评级等级 | grade_id=%s | name=%s", grade_id, payload.grade_name)
|
||||
return out
|
||||
|
||||
|
||||
def delete_grade(
|
||||
session: Session,
|
||||
grade_id: int,
|
||||
*,
|
||||
operator: User,
|
||||
meta: RequestMeta | None = None,
|
||||
) -> None:
|
||||
"""物理删除评级等级。
|
||||
|
||||
等级表无下游引用 —— 评级是纯计算器不落评分记录(对照表 #25),判定
|
||||
只读本表现值、不回溯历史快照,故可物理删除且无需锁行防并发引用。
|
||||
|
||||
**允许清空**:全部删空后计算器只显示总分、不出等级(前端已对应提示),
|
||||
不强制保留任何一条。
|
||||
|
||||
:raises NotFoundError: 评级等级不存在
|
||||
"""
|
||||
grade = rating_repository.get_by_id(session, grade_id)
|
||||
with audit_service.audit(
|
||||
session,
|
||||
operator=operator,
|
||||
record=AuditRecord(
|
||||
module=MODULE_RATING,
|
||||
action=ACTION_DELETE,
|
||||
summary=f"删除评级等级 {grade.grade_name if grade else f'#{grade_id}'}",
|
||||
),
|
||||
meta=meta,
|
||||
):
|
||||
if grade is None:
|
||||
raise NotFoundError("评级等级不存在")
|
||||
|
||||
grade_name = grade.grade_name # 固化:对象随删除失效
|
||||
rating_repository.delete(session, grade)
|
||||
session.commit()
|
||||
logger.info("删除评级等级 | grade_name=%s", grade_name)
|
||||
Loading…
Reference in New Issue
Block a user