77 lines
2.6 KiB
Python
77 lines
2.6 KiB
Python
# dao/teacher_dao.py
|
|
# 教师信息数据访问层
|
|
|
|
from typing import List, Optional, Tuple
|
|
|
|
from sqlalchemy.orm import Session
|
|
|
|
from dao.exceptions import ConflictError, NotFoundError
|
|
from dao.pagination import paginate
|
|
from model.teacher_model import Teacher
|
|
|
|
|
|
def assert_teacher_alive(db: Session, tea_id: str, detail: Optional[str] = None) -> Teacher:
|
|
"""
|
|
确认教师存在且未删除，否则抛 NotFoundError。
|
|
供班级模块复用作外键校验。
|
|
"""
|
|
teacher = db.query(Teacher).filter(Teacher.id == tea_id, Teacher.is_deleted == 0).first()
|
|
if not teacher:
|
|
raise NotFoundError(detail or f"教师 {tea_id} 不存在")
|
|
return teacher
|
|
|
|
|
|
def list_teachers(
|
|
db: Session,
|
|
page: int,
|
|
size: int,
|
|
name: Optional[str] = None,
|
|
type: Optional[str] = None,
|
|
) -> Tuple[int, List[Teacher]]:
|
|
"""分页查询教师，支持按姓名模糊、按职位过滤。"""
|
|
query = db.query(Teacher).filter(Teacher.is_deleted == 0)
|
|
if name:
|
|
query = query.filter(Teacher.name.like(f"%{name}%"))
|
|
if type:
|
|
query = query.filter(Teacher.type == type)
|
|
return paginate(query, page, size, order_by=Teacher.id)
|
|
|
|
|
|
def create_teacher(db: Session, data: dict) -> Teacher:
|
|
"""新增教师：校验编号与电话唯一。"""
|
|
# 编号是主键，已软删除的记录同样占用该编号，所以这里不加 is_deleted 过滤
|
|
if db.query(Teacher).filter(Teacher.id == data["id"]).first():
|
|
raise ConflictError("教师编号已存在")
|
|
|
|
if db.query(Teacher).filter(Teacher.phone == data["phone"], Teacher.is_deleted == 0).first():
|
|
raise ConflictError("电话已被使用")
|
|
|
|
teacher = Teacher(**data)
|
|
db.add(teacher)
|
|
db.commit()
|
|
db.refresh(teacher)
|
|
return teacher
|
|
|
|
|
|
def update_teacher(db: Session, tea_id: str, data: dict) -> Teacher:
|
|
"""更新教师：若改电话需重新校验唯一。"""
|
|
teacher = assert_teacher_alive(db, tea_id, "教师不存在或已删除")
|
|
|
|
new_phone = data.get("phone")
|
|
if new_phone and new_phone != teacher.phone:
|
|
if db.query(Teacher).filter(Teacher.phone == new_phone, Teacher.is_deleted == 0).first():
|
|
raise ConflictError("电话已被使用")
|
|
|
|
for field, value in data.items():
|
|
setattr(teacher, field, value)
|
|
|
|
db.commit()
|
|
db.refresh(teacher)
|
|
return teacher
|
|
|
|
|
|
def soft_delete_teacher(db: Session, tea_id: str) -> None:
|
|
"""软删除教师：仅置 is_deleted 标记，数据保留。"""
|
|
teacher = assert_teacher_alive(db, tea_id, "教师不存在或已删除")
|
|
teacher.is_deleted = 1
|
|
db.commit() |