From 883b287e668ec8a6b4d872e3f906f927f13fe935 Mon Sep 17 00:00:00 2001
From: wolin_zhangyi <1141397129@qq.com>
Date: Mon, 21 Sep 2026 18:46:42 +0800
Subject: [PATCH 1/2] 1.teacher dao 2.class_teacher 3.teacher  api 4.teacher 
 models 5.teacher schemas

---
 api/teacher.py          | 129 ++++++++++++++++++++++
 dao/teacher.py          | 239 ++++++++++++++++++++++++++++++++++++++++
 models/class_teacher.py |  52 +++++++++
 models/teacher.py       |  44 --------
 schemas/teacher.py      |  41 ++++++-
 5 files changed, 460 insertions(+), 45 deletions(-)

diff --git a/api/teacher.py b/api/teacher.py
index e69de29..19e5985 100644
--- a/api/teacher.py
+++ b/api/teacher.py
@@ -0,0 +1,129 @@
+from typing import List
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from core import database
+from core.database import get_db
+from schemas.teacher import TeacherOut, TeacherCreate, TeacherUpdate, ClassTeachersCreate, ClassTeacherOut
+# 导入dao层所有函数
+from models.teacher import Teacher
+from models.class_teacher import ClassTeachers
+from dao.teacher import (
+    get_teacher_list,
+    get_teacher_by_id,
+    create_teacher,
+    update_teacher,
+    delete_teacher,
+    get_class_teacher_by_class_id,
+    create_class_teacher,
+    update_class_teacher_full,
+    delete_class_teacher
+)
+
+router = APIRouter(prefix="/teacher", tags=["老师管理模块"])
+
+#===========================老师表===============================
+@router.get("/list", response_model=List[TeacherOut])
+def api_get_teacher_list(db: Session = Depends(get_db)):
+    """
+    GET 查询全部有效老师列表
+    :param db: 数据库会话，Depends自动注入
+    :return: List[TeacherOut] 老师列表，使用TeacherOut做响应格式化
+    """
+    return get_teacher_list(db)
+
+@router.get("/{teacher_id}", response_model=TeacherOut)
+def api_get_teacher_by_id(teacher_id: int,db: Session = Depends(get_db)):
+    """
+        根据老师主键ID查询单个有效老师
+        :param teacher_id: int 老师表主键ID
+        :param db: Session 数据库会话对象，依赖注入自动获取
+        :return: TeacherOut 老师详情信息
+    """
+    return get_teacher_by_id(db,teacher_id)
+@router.post("", response_model=TeacherOut, summary="新增老师")
+def api_create_teacher(obj: TeacherCreate, db: Session = Depends(get_db)):
+    """
+    新增老师记录，自动校验姓名、编号唯一性，并自动生成老师业务编号
+    :param obj: TeacherCreate Pydantic模型，前端提交新增老师表单数据
+    :param db: Session 数据库会话对象，依赖注入自动获取
+    :return: TeacherOut 新增成功后的老师完整信息
+    """
+    return create_teacher(db, obj)
+@router.put("/{teacher_id}", response_model=TeacherOut, summary="修改老师信息（局部更新）")
+def api_update_teacher(teacher_id: int, obj: TeacherUpdate, db: Session = Depends(get_db)):
+    """
+    修改老师信息，支持局部更新，仅更新前端传入的字段
+    :param teacher_id: int 需要修改的老师主键ID
+    :param obj: TeacherUpdate Pydantic模型，前端提交待修改字段
+    :param db: Session 数据库会话对象，依赖注入自动获取
+    :return: TeacherOut 更新后的老师完整信息
+    """
+    db_teacher = get_teacher_by_id(db, teacher_id)
+    if not db_teacher:
+        raise HTTPException(status_code=404, detail="老师不存在或已删除！")
+    result = update_teacher(db, teacher_id, obj)
+    return result
+@router.delete("/{teacher_id}", summary="逻辑删除老师")
+def api_delete_teacher(teacher_id: int, db: Session = Depends(get_db)):
+    """
+    逻辑删除老师，存在有效班级带班关系时禁止删除
+    :param teacher_id: int 需要删除的老师主键ID
+    :param db: Session 数据库会话对象，依赖注入自动获取
+    :return: dict 操作成功提示
+    """
+    result = delete_teacher(db, teacher_id)
+    if not result:
+        raise HTTPException(status_code=404, detail="老师不存在或已删除！")
+    return {"msg": "老师逻辑删除成功"}
+
+# ===================== 班级老师关联路由组 =====================
+class_teacher_router = APIRouter(prefix="/class-teacher", tags=["班级老师分配管理模块"])
+
+@class_teacher_router.get("/class/{class_id}", response_model=List[ClassTeacherOut], summary="根据班级ID查询该班级所有带班老师")
+def api_get_class_teacher_by_class_id(class_id: int, db: Session = Depends(get_db)):
+    """
+    根据班级主键ID，查询该班级全部有效的班级-老师绑定记录
+    :param class_id: int 班级表主键ID
+    :param db: Session 数据库会话对象，依赖注入自动获取
+    :return: List[ClassTeachersOut] 班级老师关联记录列表
+    """
+    return get_class_teacher_by_class_id(db, class_id)
+
+@class_teacher_router.post("", response_model=ClassTeacherOut, summary="分配老师到班级，新增班级老师关联记录")
+def api_create_class_teacher(obj: ClassTeachersCreate, db: Session = Depends(get_db)):
+    """
+    新增班级与老师的绑定关系，做重复性校验与老师有效性校验
+    :param obj: ClassTeachersCreate Pydantic模型，前端提交class_id、teacher_id、role
+    :param db: Session 数据库会话对象，依赖注入自动获取
+    :return: ClassTeachersOut 新增成功后的班级老师关联记录
+    """
+    return create_class_teacher(db, obj)
+
+@class_teacher_router.put("/{rel_id}", response_model=ClassTeacherOut, summary="更新班级老师绑定关系")
+def api_update_class_teacher_full(rel_id: int, obj: ClassTeachersCreate, db: Session = Depends(get_db)):
+    """
+    修改班级老师中间表记录，支持修改class_id、teacher_id、role；自动校验老师有效性、三元组合唯一性
+    :param rel_id: int class_teachers中间表主键ID（待修改的关联记录id）
+    :param obj: ClassTeachersCreate Pydantic模型，前端提交新的class_id、teacher_id、role
+    :param db: Session 数据库会话对象，依赖注入自动获取
+    :return: ClassTeachersOut 更新后的班级老师关联记录
+    """
+    result = update_class_teacher_full(db, rel_id, obj)
+    if not result:
+        raise HTTPException(status_code=404, detail="班级老师关联记录不存在！")
+    return result
+
+@class_teacher_router.delete("/{rel_id}", summary="逻辑删除班级老师带班关联")
+def api_delete_class_teacher(rel_id: int, db: Session = Depends(get_db)):
+    """
+    逻辑删除班级老师绑定关系，修改is_deleted标记为1，非物理删除
+    :param rel_id: int class_teachers中间表主键ID
+    :param db: Session 数据库会话对象，依赖注入自动获取
+    :return: dict 操作成功提示
+    """
+    result = delete_class_teacher(db, rel_id)
+    if not result:
+        raise HTTPException(status_code=404, detail="班级老师关联记录不存在！")
+    return {"msg": "解除班级带班关系成功"}
+
+
diff --git a/dao/teacher.py b/dao/teacher.py
index e69de29..239c3d5 100644
--- a/dao/teacher.py
+++ b/dao/teacher.py
@@ -0,0 +1,239 @@
+from sqlalchemy.orm import Session
+from core import database
+from models.teacher import Teacher
+from models.class_teacher import ClassTeachers
+from schemas.teacher import TeacherUpdate, TeacherCreate,ClassTeachersCreate
+from utils.code_generator import generate_no
+from fastapi import HTTPException
+
+'''
+本文件内容为老师表与班级老师关系表的增删改查函数集合
+'''
+#================老师表Teacher的CRUD================
+#查询所有未被删除的老师
+def get_teacher_list(db:Session, teacher_id:int):
+    teacher = get_teacher_by_id(db, teacher_id)
+    if not teacher:
+        raise HTTPException(status_code=404, detail="老师不存在或已删除！")
+    #查询老师列表，过滤逻辑删除
+    return db.query(Teacher).filter(Teacher.is_deleted == 0).all()
+#根据id,查询单个符合条件的老师
+def get_teacher_by_id(db:Session,teacher_id:int):
+    return db.query(Teacher).filter(Teacher.id == teacher_id
+                                    ,Teacher.is_deleted == 0).first()
+#新增
+def create_teacher(db:Session,obj:TeacherCreate):
+    '''
+    新增
+    :param db: Session 数据库会话
+    :param obj:TeacherCreate 前端传入新增数据
+    :return: db_teacher 新增成功的ORM对象
+    业务逻辑：
+        1、查重：同名有效老师不能重复新增
+        2、如果前端手动添加teacher_no，校验编号不能和已有有效老师编号重复
+        3、创建ORM对象加入会话
+        4、调用generate_no，走动生成业务编号
+        5、commit提交事务入库，refresh刷新对象
+    '''
+    exist_teacher = db.query(Teacher).filter(Teacher.teacher_name == obj.teacher_name
+                                             ,Teacher.is_deleted == 0).first()
+    if exist_teacher:
+        raise HTTPException(status_code=409,detail='该用户已存在')
+    if obj.teacher_no:
+        exist_teacher = db.query(Teacher).filter(Teacher.teacher_no == obj
+                                                 .teacher_no,Teacher.is_deleted == 0).first()
+        if exist_teacher:
+            raise HTTPException(status_code=409,detail='老师编号已存在')
+    #开始添加
+    data = obj.model_dump(exclude_none=True)
+    db_teacher = Teacher(**data)
+    db.add(db_teacher)
+    # 调用公共函数生成业务编号，内部执行db.flush拿到自增id
+    generate_no('teacher_no','TCH',db_teacher,db)
+    db.commit()
+    db.refresh(db_teacher)
+    #从数据库重新查询这条记录，刷新 db_teacher 对象。
+    #作用：同步数据库默认字段的值，例如`created_at`、`updated_at`，拿到数据库里最新的数据，
+    # 最终返回给前端。
+    return db_teacher
+#更新
+def update_teacher(db:Session,teacher_id:int,obj:TeacherUpdate):
+    """
+        修改老师信息，局部更新
+        :param db: Session 数据库会话
+        :param teacher_id: int 需要修改的老师id
+        :param obj: TeacherUpdate 前端传入要修改的字段
+        :return: db_teacher ORM对象 / None
+    """
+    # 调用get_teacher_by_id校验用户是否存在
+    db_teacher = get_teacher_by_id(db,teacher_id)
+    if obj.teacher_name:
+        exist_teacher = db.query(Teacher).filter(
+            Teacher.teacher_name == obj.teacher_name,
+            Teacher.id != teacher_id,
+            Teacher.is_deleted == 0
+        ).first()
+        if exist_teacher:
+            raise HTTPException(status_code=409, detail="该姓名已被其他老师占用！")
+    if obj.teacher_no:
+        exist_no = db.query(Teacher).filter(
+            Teacher.teacher_no == obj.teacher_no,
+            Teacher.id != teacher_id,
+            Teacher.is_deleted == 0
+        ).first()
+        if exist_no:
+            raise HTTPException(status_code=409, detail="老师编号已被其他老师占用！")
+    #用户存在，解析键值对，循环使用setattr添加
+    update_data = obj.model_dump(exclude_none=True)
+    for k, v in update_data.items():
+        setattr(db_teacher, k, v)
+    db.commit()
+    db.refresh(db_teacher)
+    return db_teacher
+#删除
+def delete_teacher(db:Session,teacher_id:int):
+    """
+        逻辑删除老师，不是物理删除；修改is_deleted=1
+        :param db: Session
+        :param teacher_id:老师主键id
+        :return: Teacher ORM对象，找不到返回None
+        业务限制：老师已经分配班级，则不允许删除，防止脏数据
+    """
+    # 查询目标老师
+    db_teacher = get_teacher_by_id(db, teacher_id)
+    if not db_teacher:
+        return None
+
+    # 校验：查询班级老师中间表，判断该老师是否还有有效带班关系
+    rel = db.query(ClassTeachers).filter(
+        ClassTeachers.teacher_id == teacher_id,
+        ClassTeachers.is_deleted == 0
+    ).first()
+    if rel:
+        raise HTTPException(
+            status_code=400,
+            detail="该老师已分配班级，不能删除，请先解除带班关系！"
+        )
+
+    # 逻辑删除标记
+    db_teacher.is_deleted = 1
+    db.commit()
+    return db_teacher
+
+#==================班级老师中间表 CRUD=====================
+#查询
+def get_class_teacher_by_class_id(db: Session, class_id: int):
+    """
+    根据班级id，查询该班级所有有效的带班老师关系
+    :param db: Session
+    :param class_id:班级主键
+    :return: list[ClassTeacher]
+    """
+    return (
+        db.query(ClassTeachers)
+        .filter(ClassTeachers.class_id == class_id
+                ,ClassTeachers.is_deleted == 0)
+        .all()
+    )
+
+#新增
+def create_class_teacher(db: Session, obj: ClassTeachersCreate):
+    """
+    分配老师到班级，新增班级-老师关系记录
+    :param db: Session
+    :param obj: ClassTeacherCreate class_id、teacher_id、role
+    :return: ClassTeacher ORM对象
+    校验：
+        1.老师必须存在且未删除
+        2.同一班级同一个老师同一个角色不能重复分配
+    """
+    # 校验老师是否存在
+    teacher = get_teacher_by_id(db, obj.teacher_id)
+    if not teacher:
+        raise HTTPException(status_code=404, detail="老师不存在或已删除！")
+
+    # 查重：同一班级+同一老师+同一角色不能重复分配
+    rel = db.query(ClassTeachers).filter(
+        ClassTeachers.class_id == obj.class_id,
+        ClassTeachers.teacher_id == obj.teacher_id,
+        ClassTeachers.role == obj.role,
+        ClassTeachers.is_deleted == 0
+    ).first()
+    if rel:
+        raise HTTPException(status_code=409, detail="该老师已以相同角色分配到该班级！")
+
+    data = obj.model_dump()
+    db_obj = ClassTeachers(**data)
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+
+    return db_obj
+
+#更新
+def update_class_teacher_full(db: Session, rel_id: int, obj: ClassTeachersCreate):
+    """
+    完整更新班级老师关系：可修改 class_id、teacher_id、role
+    :param db: Session
+    :param rel_id: 中间表主键
+    :param obj: ClassTeacherCreate 传入的新参数
+    :return: ClassTeacher ORM对象
+    校验：
+        1. 关系记录存在且未删除
+        2. 如果修改teacher_id，校验老师必须有效存在
+        3. 校验新组合(class_id+teacher_id+role)不能和其他有效记录重复
+    """
+    # 1. 查询原有记录
+    db_rel = db.query(ClassTeachers).filter(
+        ClassTeachers.id == rel_id,
+        ClassTeachers.is_deleted == 0
+    ).first()
+    if not db_rel:
+        return None
+
+    # 2. 如果老师ID发生变化，校验老师是否有效
+    if obj.teacher_id != db_rel.teacher_id:
+        teacher = get_teacher_by_id(db, obj.teacher_id)
+        if not teacher:
+            raise HTTPException(status_code=404, detail="老师不存在或已删除！")
+
+    # 3. 查重：新的三元组合不能重复（排除自身这条记录）
+    exist_rel = db.query(ClassTeachers).filter(
+        ClassTeachers.class_id == obj.class_id,
+        ClassTeachers.teacher_id == obj.teacher_id,
+        ClassTeachers.role == obj.role,
+        ClassTeachers.is_deleted == 0,
+        ClassTeachers.id != rel_id
+    ).first()
+    if exist_rel:
+        raise HTTPException(status_code=409, detail="该老师已以相同角色分配到该班级！")
+
+    # 赋值更新
+    db_rel.class_id = obj.class_id
+    db_rel.teacher_id = obj.teacher_id
+    db_rel.role = obj.role
+
+    db.commit()
+    db.refresh(db_rel)
+    return db_rel
+
+
+#删除
+def delete_class_teacher(db: Session, rel_id: int):
+    """
+    逻辑删除班级老师带班关系
+    :param db: Session
+    :param rel_id: class_teachers表主键id
+    :return: ClassTeacher ORM对象，找不到返回None
+    """
+    db_obj = (
+        db.query(ClassTeachers)
+        .filter(ClassTeachers.id == rel_id, ClassTeachers.is_deleted == 0)
+        .first()
+    )
+    if not db_obj:
+        return None
+
+    db_obj.is_deleted = 1
+    db.commit()
+    return db_obj
diff --git a/models/class_teacher.py b/models/class_teacher.py
index e69de29..db97dfd 100644
--- a/models/class_teacher.py
+++ b/models/class_teacher.py
@@ -0,0 +1,52 @@
+from sqlalchemy import (Column, Integer, String, Text,
+                        BigInteger,ForeignKey,VARCHAR,DateTime
+                        )
+from sqlalchemy.dialects.mssql import TINYINT
+
+from core.database import Base
+from datetime import datetime
+
+#班级老师关系表 class_teachers_info_detail 中间表 ORM 模型完整定义
+#字段包括id,class_id,teacher_id,role,created_at,updated_at,is_deleted
+class ClassTeachers(Base):
+    __tablename__ = "class_teachers_info_detail"
+    id = Column(
+         BigInteger
+        ,primary_key=True
+        ,autoincrement=True
+        ,comment='关系')
+    class_id = Column(
+         BigInteger
+        ,ForeignKey('class_id')
+        ,nullable=False
+        ,comment='关联 class_id'
+    )
+    teacher_id = Column(
+         BigInteger
+        ,ForeignKey('teacher_id')
+        ,nullable=False
+        ,comment='关联 teacher_id'
+    )
+    role = Column(
+         VARCHAR(30)
+        ,nullable=False
+        ,comment='老师在班级中的角色：head_teacher班主任 / lecturer授课老师 / assistant助教'
+    )
+    created_at = Column(
+         DateTime
+        ,nullable=False
+        ,default=datetime.now()
+        ,comment='创建时间'
+    )
+    updated_at = Column(
+         DateTime
+        ,nullable=False
+        ,default=datetime.now()
+        ,comment='更新时间'
+    )
+    is_deleted = Column(
+        TINYINT
+        ,nullable=False
+        ,default=0
+        ,comment='逻辑删除'
+    )
diff --git a/models/teacher.py b/models/teacher.py
index fe6ff57..bcfe6a0 100644
--- a/models/teacher.py
+++ b/models/teacher.py
@@ -62,48 +62,4 @@ class Teacher(Base):
     )
 
 
-#班级老师关系表 class_teachers_info_detail 中间表 ORM 模型完整定义
-#字段包括id,class_id,teacher_id,role,created_at,updated_at,is_deleted
-class ClassTeachers(Base):
-    __tablename__ = "class_teachers_info_detail"
-    id = Column(
-         BigInteger
-        ,primary_key=True
-        ,autoincrement=True
-        ,comment='关系')
-    class_id = Column(
-         BigInteger
-        ,ForeignKey('class_id')
-        ,nullable=False
-        ,comment='关联 class_id'
-    )
-    teacher_id = Column(
-         BigInteger
-        ,ForeignKey('teacher_id')
-        ,nullable=False
-        ,comment='关联 teacher_id'
-    )
-    role = Column(
-         VARCHAR(30)
-        ,nullable=False
-        ,comment='老师在班级中的角色：head_teacher班主任 / lecturer授课老师 / assistant助教'
-    )
-    created_at = Column(
-         DateTime
-        ,nullable=False
-        ,default=datetime.now()
-        ,comment='创建时间'
-    )
-    updated_at = Column(
-         DateTime
-        ,nullable=False
-        ,default=datetime.now()
-        ,comment='更新时间'
-    )
-    is_deleted = Column(
-        TINYINT
-        ,nullable=False
-        ,default=0
-        ,comment='逻辑删除'
-    )
 
diff --git a/schemas/teacher.py b/schemas/teacher.py
index 93cb1fb..6ecac07 100644
--- a/schemas/teacher.py
+++ b/schemas/teacher.py
@@ -1,10 +1,16 @@
 from pydantic import BaseModel
 from typing import Optional
 from datetime import datetime
+
+from sqlalchemy import BigInteger
+from sqlalchemy.dialects.mssql import TINYINT
+from sqlalchemy.dialects.mysql import VARCHAR
+
+
 #===============老师表===================
 #===============请求体模型================
 class TeacherCreate(BaseModel):
-    teacher_no: Optional[str] = None
+    teacher_no: Optional[int] = None
     teacher_name: Optional[str] = None
     email: Optional[str] = None
     phone: Optional[str] = None
@@ -17,3 +23,36 @@ class TeacherUpdate(BaseModel):
     phone: Optional[str] = None
     remark: Optional[str] = None
 
+#================响应体==================
+class TeacherOut(BaseModel):
+    id: int
+    teacher_no: str
+    teacher_name: str
+    phone: Optional[str]
+    email: Optional[str]
+    remark: Optional[str]
+    created_at: datetime
+    updated_at: datetime
+    is_deleted: int
+#`orm_mode = True` 是 Pydantic v1 的配置项。开启之后，Pydantic 可以直接读取 SQLAlchemy
+# 查询得到的 ORM 对象的属性，自动映射生成接口响应 JSON，不用手动把 ORM 对象转为字典。
+# 这个配置只用在响应体 Out 模型，新增和修改的请求模型不需要。
+    class Config:
+        from_attributes=True
+
+#=====班级老师中间表 class_teachers =========
+class ClassTeachersCreate(BaseModel):
+    class_id: int
+    teacher_id: int
+    role: str
+#=================响应体===================
+class ClassTeacherOut(BaseModel):
+    id: int
+    class_id: int
+    teacher_id: int
+    role: str
+    created_at: datetime
+    updated_at: datetime
+    is_deleted: int
+    class Config:
+        from_attributes=True
-- 
2.54.0


From a602dc9de1a782cabbc53819d8cb2025eefcb4dd Mon Sep 17 00:00:00 2001
From: wolin_zhangyi <1141397129@qq.com>
Date: Mon, 21 Sep 2026 22:00:46 +0800
Subject: [PATCH 2/2] 1.teacher dao 2.teacher  api

---
 api/teacher.py | 2 +-
 dao/teacher.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/teacher.py b/api/teacher.py
index 19e5985..c300850 100644
--- a/api/teacher.py
+++ b/api/teacher.py
@@ -21,7 +21,7 @@ from dao.teacher import (
 
 router = APIRouter(prefix="/teacher", tags=["老师管理模块"])
 
-#===========================老师表===============================
+#============================老师表===============================
 @router.get("/list", response_model=List[TeacherOut])
 def api_get_teacher_list(db: Session = Depends(get_db)):
     """
diff --git a/dao/teacher.py b/dao/teacher.py
index 239c3d5..bef465c 100644
--- a/dao/teacher.py
+++ b/dao/teacher.py
@@ -9,7 +9,7 @@ from fastapi import HTTPException
 '''
 本文件内容为老师表与班级老师关系表的增删改查函数集合
 '''
-#================老师表Teacher的CRUD================
+#=================老师表Teacher的CRUD================
 #查询所有未被删除的老师
 def get_teacher_list(db:Session, teacher_id:int):
     teacher = get_teacher_by_id(db, teacher_id)
-- 
2.54.0