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zhutt
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+25
-24
@@ -12,44 +12,45 @@ classes_router = APIRouter()
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# ————定义班级表"新增"信息的接口函数————
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@classes_router.post('/',response_model=ClassResponse,summary='新增班级信息') # POST新增请求,指定返回数据格式为 ClassResponse
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def post_classes(classes:ClassCreate,db=Depends(get_db)): # 定义更新接口函数,参数classes声明创建请求模型,参数db依赖于数据库会话的上下文管理器
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c = classes.model_dump() # 变量c用来接收通过model_dump将Pydantic模型对象解析为Python的字典,方便后续解包传参
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r = post_classes_dao( c , db ) # 变量r用来接收dao层post_classes_dao函数的返回值,执行函数时以变量c的数据和db依赖函数入参
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if r : # 判断 DAO 层的返回结果,如果为True
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return ClassResponse( total=1,data=c ) # 返回成功响应,携带新增的数据给前端
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else : # 如果为False
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def post_classes(classes:ClassCreate,db=Depends(get_db)): # 定义更新接口函数,参数classes声明创建请求模型,参数db依赖于数据库会话的上下文管理器
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c = classes.model_dump() # 变量c用来接收通过model_dump将Pydantic模型对象解析为Python的字典,方便后续解包传参
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r = post_classes_dao( c , db ) # 变量r用来接收dao层post_classes_dao函数的返回值,执行函数时以变量c的数据和db依赖函数入参
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if r : # 判断 DAO 层的返回结果,如果为True
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return ClassResponse( total=1,data=c ) # 返回成功响应,携带新增的数据给前端
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else : # 如果为False
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raise HTTPException(status_code=500,detail='添加失败,服务器繁忙,请稍后添加!') # 抛出 500 内部服务器错误 和提示
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# ————定义班级表"更新"信息的接口函数————
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@classes_router.put('/{id}',response_model=ClassResponse,summary='更新班级信息') # put更新请求,指定返回数据格式为 ClassResponse
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def put_classes( classes:ClassUpdate , id:int , db=Depends( get_db ) ): # 定义更新接口函数,id参数接收前端输入的数据,参数classes声明更新请求体模型,参数db依赖于数据库会话的上下文管理器
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updates = classes.model_dump( exclude_unset=True ) # 变量updates用来接收通过model_dump将Pydantic模型对象解析为Python的字典(只解析输入的数据),方便后续解包传参
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r = update_classes_dao( id, db, updates ) # 变量r用来接收dao层update_classes_dao函数的返回值,执行函数时以变量c的数据、db依赖函数、和前端更新的数据入参
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if r : # 判断 DAO 层的返回结果,如果为True
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updates = classes.model_dump( exclude_unset=True ) # 变量updates用来接收通过model_dump将Pydantic模型对象解析为Python的字典(只解析输入的数据),方便后续解包传参
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r = update_classes_dao( id, db, updates ) # 变量r用来接收dao层update_classes_dao函数的返回值,执行函数时以变量c的数据、db依赖函数、和前端更新的数据入参
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if r : # 判断 DAO 层的返回结果,如果为True
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return ClassResponse( detail='更新成功', total=1 ,data = updates ) # 返回成功响应,携带更新的数据给前端
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raise HTTPException( status_code=500, detail='更新失败,该班级已不存在或服务器繁忙,请稍后更新!' ) # 如果为False,抛出 500 内部服务器错误 和提示
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# ————定义班级表"查询"信息的接口函数————
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@classes_router.get('',summary='查询班级信息') # get查询请求
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def get_classes( id:int|None = None # id参数接收前端输入的数据,声明是整数,可以为空默认为空
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, class_no:str|None = None # class_no参数接收前端输入的数据,声明是字符串,可以为空默认为空
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, class_name:str|None = None # class_name参数接收前端输入的数据,声明是字符串,可以为空默认为空
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, page:int = 1 # page参数接收前端输入的数据,声明是整数,默认是1
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, page_size:int = 5 # page参数接收前端输入的数据,声明是整数,默认是5
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, db=Depends(get_db) # 参数db依赖于数据库会话的上下文管理器
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@classes_router.get('',summary='查询班级信息') # get查询请求
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def get_classes( id:int|None = None # id参数接收前端输入的数据,声明是整数,可以为空默认为空
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, class_no:str|None = None # class_no参数接收前端输入的数据,声明是字符串,可以为空默认为空
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, class_name:str|None = None # class_name参数接收前端输入的数据,声明是字符串,可以为空默认为空
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, page:int = 1 # page参数接收前端输入的数据,声明是整数,默认是1
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, page_size:int = 5 # page参数接收前端输入的数据,声明是整数,默认是5
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, db=Depends(get_db) # 参数db依赖于数据库会话的上下文管理器
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):
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t,r = get_classes_dao( id , class_no , class_name , page , page_size ,db ) # 变量t,r用来接收dao层get_classes_dao函数的返回值,执行函数时以前端输入的id , class_no , class_name , page , page_size 、db依赖函数入参
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if t != 0 : # 判断 DAO 层的返回结果,如果为条数不为0
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return ClassResponse( total = t, data = r ) # 返回成功响应,返回符合条件的总条数,携带符合条件的数据给前端
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else : # 判断 DAO 层的返回结果,如果为条数为0
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return ClassResponse( code = 404,detail = '没有符合条件的班级,请检查输入是否有误') # 返回404响应,提示没有符合条件的提示给前端
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if t != 0 : # 判断 DAO 层的返回结果,如果为条数不为0
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return ClassResponse( total = t, data = r ) # 返回成功响应,返回符合条件的总条数,携带符合条件的数据给前端
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return ClassResponse( code = 404,detail = '没有符合条件的班级,请检查输入是否有误') # 判断 DAO 层的返回结果,如果为条数为0,返回404响应,提示没有符合条件的提示给前端
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# ————定义班级表"删除"信息的接口函数————
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@classes_router.delete('/{id}',response_model=ClassResponse,summary='删除班级信息') # delete删除请求,指定返回数据格式为 ClassResponse
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def delete_classes(id:int,db=Depends(get_db)): # 定义删除接口函数,id参数接收前端输入的数据,参数db依赖于数据库会话的上下文管理器
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r = delete_classes_dao( id , db ) # 变量r用来接收dao层delete_classes_dao函数的返回值,执行函数时以以前端输入的id 数据、db依赖函数入参
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if r : # 判断 DAO 层的返回结果,如果是True
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return ClassResponse( total=1,data='已成功删除班级信息' ) # 返回成功响应和提示给前端 # 如果是False
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def delete_classes(id:int,db=Depends(get_db)): # 定义删除接口函数,id参数接收前端输入的数据,参数db依赖于数据库会话的上下文管理器
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r = delete_classes_dao( id , db ) # 变量r用来接收dao层delete_classes_dao函数的返回值,执行函数时以以前端输入的id 数据、db依赖函数入参
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if r!=0 : # 判断 DAO 层的返回结果,如果是True
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return ClassResponse( total=1,data='已成功删除班级信息' ) # 返回成功响应和提示给前端 # 如果是False
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raise HTTPException(status_code=500, detail='删除失败,该班级信息已不存在或服务器繁忙,请稍后更新!') # 如果为False,抛出 500 内部服务器错误 和提示
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+61
-13
@@ -1,4 +1,5 @@
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from fastapi import APIRouter, Depends, HTTPException
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from fastapi import APIRouter, Depends, HTTPException,Query,Path
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from sqlalchemy.orm import Session
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from core.database import get_db
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@@ -6,7 +7,7 @@ from schemas.student import StudentCreate, StudentUpdate
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from dao import student as student_dao
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student_router = APIRouter()
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@student_router.post("",summary='添加学生')
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@student_router.put("",summary='添加学生')
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def create_student(request:StudentCreate,db:Session = Depends(get_db)):
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d = request.model_dump()
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r = student_dao.create_students(d,db)
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@@ -14,7 +15,7 @@ def create_student(request:StudentCreate,db:Session = Depends(get_db)):
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raise HTTPException(status_code=500,detail='服务器繁忙,请稍后添加!')
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return {'code':200,'detail':"添加学生成功"}
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@student_router.put("/{id}", summary="修改学生")
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@student_router.post("/{id}", summary="更新学生信息")
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def update_student(
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id: int,
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request: StudentUpdate,
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@@ -34,38 +35,69 @@ def update_student(
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if student is False:
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raise HTTPException(status_code=500, detail="修改学生失败")
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#传入空字典报400
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if not data:
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raise HTTPException(
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status_code=400,
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detail="没有传入需要修改的字段",
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)
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return {
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"code": 200,
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"detail": "修改学生成功",
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"data": student,
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}
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@student_router.get("", summary="查询学生列表")
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@student_router.get("", summary="分页查询学生列表")
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def get_students(
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# 三个查询条件都可以不传
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student_no: str | None = None,
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student_name: str | None = None,
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class_id: int | None = None,
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student_no: str | None = Query(default=None,description="按学号精确查询"),
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student_name: str | None = Query(default=None,description="按名字模糊查询"),
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class_id: int | None = Query(default=None,gt=0,description="按班级号精确查询"),
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# 获取本次请求使用的数据库连接
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db: Session = Depends(get_db),
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page:int = Query(default=1,ge=1,description="页码,从1开始"),
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page_size:int = Query(default=10,ge=1,le=100,description="每页条数,最多100条"),
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):
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# 调用 DAO 查询数据库
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students = student_dao.get_students(
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total, students = student_dao.get_students(
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db=db,
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student_no=student_no,
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student_name=student_name,
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class_id=class_id,
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page=page,
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page_size=page_size,
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)
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data = [
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{
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"id": student.id,
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"student_no": student.student_no,
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"student_name": student.student_name,
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"class_id": student.class_id,
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"consultant_id": student.consultant_id,
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"native_place": student.native_place,
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"graduation_school": student.graduation_school,
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"major": student.major,
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"enrollment_date": student.enrollment_date,
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"graduation_date": student.graduation_date,
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"education": student.education,
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"age": student.age,
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"gender": student.gender,
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}
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for student in students
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]
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return {
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"code": 200,
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"detail": "查询成功",
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"total": len(students),
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"data": students,
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"total": total,
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"page": page,
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"page_size": page_size,
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"data": data,
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}
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@student_router.get("/{id}", summary="查询学生详情")
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def get_student(id: int, db: Session = Depends(get_db)):
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def get_student(id: int = Path(gt=0),
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db: Session = Depends(get_db)):
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# 根据路径中的 ID 查询学生
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student = student_dao.get_student_by_id(id, db)
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@@ -73,10 +105,26 @@ def get_student(id: int, db: Session = Depends(get_db)):
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# 404 表示请求的数据不存在
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raise HTTPException(status_code=404, detail="学生不存在")
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result = {
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"id": student.id,
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"student_no": student.student_no,
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"student_name": student.student_name,
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"class_id": student.class_id,
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"consultant_id": student.consultant_id,
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"native_place": student.native_place,
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"graduation_school": student.graduation_school,
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"major": student.major,
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"enrollment_date": student.enrollment_date,
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"graduation_date": student.graduation_date,
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"education": student.education,
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"age": student.age,
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"gender": student.gender,
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}
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return {
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"code": 200,
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"detail": "查询成功",
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"data": student,
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"data": result,
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}
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@student_router.delete("/{id}", summary="逻辑删除学生")
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+43
-27
@@ -29,38 +29,54 @@ def update_classes_dao( class_id , db , updates ): # 定义函数,设置
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# ————定义班级表"查询"信息的函数————
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def get_classes_dao( class_id, class_no , class_name , page , page_size , db ): # 定义函数,设置六个形参class_id, class_no , class_name , page , page_size , db
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q = db.query( Classes ).filter( Classes.is_deleted == 0 ) # 初始化查询语句,基础过滤条件为筛选未删除的数据 (is_deleted=0)
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if class_id : # 如果传入了班级id参数
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q = q.filter( Classes.id == class_id ) # 则追加id过滤条件
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if class_no : # 如果传入了班级no参数
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q = q.filter( Classes.class_no == class_no ) # 则追加no过滤条件
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if class_name : # 如果传入了班级name参数
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q = q.filter( Classes.class_name == class_name ) # 则追加name过滤条件
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total = q.count() # tatal变量接收满足当前所有过滤条件的数据总条数
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r = q.offset( ( page-1 ) * page_size ).limit( page_size ).all() # 变量r用来接收查询取出结果列表,计算分页偏移量(从第几行开始查),设置分页限制条数
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return total , [ # 返回 total变量总条数 和 将查询结果列表转换为字典列表的数据
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{
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'class_id':i.id # 提取班级ID
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, 'class_no':i.class_no # 提取班级编号
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, 'class_name':i.class_name # 提取班级名称
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, 'start_date':i.start_date # 提取开课日期
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, 'end_date':i.end_date # 提取结课日期
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, 'created_at':i.created_at # 提取创建时间
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, 'update_at':i.update_at # 提取更新时间
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, 'remark':i.remark # 提取备注信息
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}
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for i in r # 循环遍历查询出的每一行数据 i
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]
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from sqlalchemy import func, and_ ,desc # 从sqlalchemy模块导入func聚合函数的类、and_函数,降序排序desc函数
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from models.student import Student # 从models包下的student模块导入Student表模型类
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def get_classes_dao( class_id, class_no , class_name , page , page_size , db ): # 定义函数,设置六个形参class_id, class_no , class_name , page , page_size , db
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q = db.query( Classes.id.label('class_id') # 查询班级ID(别名class_id)
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, Classes.class_no # 班级编号
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, Classes.class_name # 班级名称
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, func.count(Student.id).label('student_count') # 统计班级未删除的学生人数(别名student_count)
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, Classes.start_date #开课时间
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, Classes.end_date #结课时间
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, Classes.created_at #创建时间
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, Classes.update_at #更新时间
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, Classes.remark #备注信息
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). \
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outerjoin(Student, and_(Classes.id == Student.class_id, Student.is_deleted == 0)). \
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filter( Classes.is_deleted == 0 ) # 左连接学生表,并指定连接条件(未删除的学生)
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if class_id : # 如果传入了班级id参数
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q = q.filter( Classes.id == class_id ) # 则追加id过滤条件
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if class_no : # 如果传入了班级no参数
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q = q.filter( Classes.class_no == class_no ) # 则追加no过滤条件
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if class_name : # 如果传入了班级name参数
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q = q.filter( Classes.class_name == class_name ) # 则追加name过滤条件
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q = q.group_by(Classes.id, Classes.class_no, Classes.class_name) # 按班级ID、编号、名称进行分组聚合
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q = q.order_by( desc('student_count') ) # 按学生人数(别名)进行降序排列
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total = q.count() # total变量接收满足当前所有过滤条件的数据总条数
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r = q.offset((page - 1) * page_size).limit(page_size).all() # 变量r用来接收查询取出结果列表,计算分页偏移量(从第几行开始查),设置分页限制条数
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return total, [ # 返回 total变量总条数 和 将查询结果列表转换为字典列表的数据
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{
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'class_id': i.class_id # 提取班级ID
|
||||
, 'class_no': i.class_no # 提取班级编号
|
||||
, 'class_name': i.class_name # 提取班级名称
|
||||
, 'student_count': i.student_count # 提取班级总人数
|
||||
, 'start_date':i.start_date # 提取开课日期
|
||||
, 'end_date':i.end_date # 提取结课日期
|
||||
, 'created_at':i.created_at # 提取创建时间
|
||||
, 'update_at':i.update_at # 提取更新时间
|
||||
, 'remark':i.remark # 提取备注信息
|
||||
}
|
||||
for i in r # 循环遍历查询出的每一行数据 i
|
||||
]
|
||||
|
||||
# ————定义班级表"删除"信息的函数————
|
||||
def delete_classes_dao( class_id , db ): # 定义函数,设置两个个形参class_id,db
|
||||
try : # 执行以下可能报错的代码
|
||||
db.query( Classes ).filter( Classes.id == class_id , Classes.is_deleted == 0 ).update( {"is_deleted": 1} ) # 将未删除且前端输入的id和数据库id可以匹配上的数据更新is_deleted字段为1,表示已逻辑删除
|
||||
r = db.query( Classes ).filter( Classes.id == class_id , Classes.is_deleted == 0 ).update( {"is_deleted": 1} ) # 将未删除且前端输入的id和数据库id可以匹配上的数据更新is_deleted字段为1,表示已逻辑删除
|
||||
if r !=0:
|
||||
db.commit()
|
||||
return r
|
||||
except : # 捕获异常:
|
||||
db.rollback() # 如果中间出错,回滚事务,防止产生脏数据
|
||||
return False # 返回 False,返回接口,表示操作失败
|
||||
else : # 执行成功:
|
||||
db.commit() # 提交事务:更新is_deleted字段为1,表示已逻辑删除,前端无法查询到已逻辑删除的数据
|
||||
return True # 返回 True,返回接口,表示操作成功
|
||||
|
||||
+21
-8
@@ -1,9 +1,7 @@
|
||||
from schemas.student import *
|
||||
from core.database import get_db
|
||||
from models.student import *
|
||||
from models.student import Student
|
||||
from sqlalchemy.orm import Session
|
||||
|
||||
|
||||
#新建学生
|
||||
def create_students(d: dict, db: Session):
|
||||
stu = Student(**d)
|
||||
|
||||
@@ -22,6 +20,7 @@ def create_students(d: dict, db: Session):
|
||||
print(f"插入学生失败: {e}")
|
||||
return None
|
||||
|
||||
#查询学生是否已经被逻辑删除
|
||||
def get_student_by_id(student_id: int, db: Session):
|
||||
# 同时判断 is_deleted,已经逻辑删除的学生不会被查到
|
||||
return db.query(Student).filter(
|
||||
@@ -29,6 +28,7 @@ def get_student_by_id(student_id: int, db: Session):
|
||||
Student.is_deleted == 0,
|
||||
).first()
|
||||
|
||||
#更新学生信息
|
||||
def update_student(student_id: int, data: dict, db: Session):
|
||||
# 第一步:先查询学生
|
||||
student = get_student_by_id(student_id, db)
|
||||
@@ -54,11 +54,14 @@ def update_student(student_id: int, data: dict, db: Session):
|
||||
print("修改学生失败:", e)
|
||||
return False
|
||||
|
||||
#允许条件输入的列表查询
|
||||
def get_students(
|
||||
db: Session,
|
||||
student_no: str | None = None,
|
||||
student_name: str | None = None,
|
||||
class_id: int | None = None,
|
||||
page: int = 1,
|
||||
page_size: int = 10,
|
||||
):
|
||||
# 第一步:只查询没有被删除的学生
|
||||
query = db.query(Student).filter(Student.is_deleted == 0)
|
||||
@@ -72,12 +75,22 @@ def get_students(
|
||||
# 姓名使用模糊查询,例如“张”可以查到“张三”
|
||||
query = query.filter(Student.student_name.like(f"%{student_name}%"))
|
||||
|
||||
if class_id:
|
||||
# 班级 ID 使用精确查询
|
||||
query = query.filter(Student.class_id == class_id)
|
||||
if class_id is not None:
|
||||
query = query.filter(Student.class_id == class_id)
|
||||
|
||||
# 第三步:执行查询并返回全部结果
|
||||
return query.all()
|
||||
# 分页之前统计符合条件的总条数
|
||||
total = query.count()
|
||||
|
||||
#默认按学生id排序
|
||||
students = (
|
||||
query
|
||||
.order_by(Student.id.desc())
|
||||
.offset((page - 1) * page_size)
|
||||
.limit(page_size)
|
||||
.all()
|
||||
)
|
||||
return total, students
|
||||
|
||||
#逻辑删除学生
|
||||
def delete_student(student_id: int, db: Session):
|
||||
|
||||
@@ -5,7 +5,7 @@ from core.database import Base # 从core软件包下的database模块导入B
|
||||
from sqlalchemy.dialects.mysql import TINYINT
|
||||
|
||||
class Classes( Base ): # 在python里的名字
|
||||
__tablename__ = 'class_info_detail' # 在数据库中表的名字
|
||||
__tablename__ = 'class_info_detail' # 在数据库中表的名字
|
||||
#————创建班级"主键"的字段名————
|
||||
id = Column( Integer # 声明字段的数据类型是"整数"
|
||||
, primary_key = True # 声明是"主键"
|
||||
@@ -25,8 +25,12 @@ class Classes( Base ): # 在python里的名字
|
||||
start_date = Column( DATE # 声明是字段数据类型是日期
|
||||
, nullable = False # 开课时间必填
|
||||
)
|
||||
# ————创建班级"结课时间"的字段名————
|
||||
end_date = Column( DATE # 声明是字段数据类型是'日期'
|
||||
# ————创建班级"计划结课时间"的字段名————
|
||||
pland_end_date = Column( DATE # 声明是字段数据类型是'日期'
|
||||
, nullable = True # 声明是"可为空"
|
||||
)
|
||||
# ————创建班级"实际结课时间"的字段名————
|
||||
true_end_date = Column( DATE # 声明是字段数据类型是'日期'
|
||||
, nullable = True # 声明是"可为空"
|
||||
)
|
||||
# ————创建班级"创建时间"的字段名————
|
||||
|
||||
@@ -6,11 +6,11 @@ from datetime import datetime,date # 导入datetime模块下的datetime,da
|
||||
|
||||
# ————定义"创建班级"的"请求体"模型————
|
||||
class ClassCreate( BaseModel ): # "创建"班级信息的请求体模型
|
||||
class_no: str # 班级编号",不可为空
|
||||
class_name: str # 班级名字",不可为空
|
||||
start_date : date|None = None # 班级开课日期",可以为空,默认为空
|
||||
end_date : date|None = None # 班级结课日期",可以为空,默认为空
|
||||
remark : str|None = None # 班级备注",可以为空,默认为空
|
||||
class_no: str # 班级编号,不可为空
|
||||
class_name: str # 班级名字,不可为空
|
||||
start_date : date # 班级开课日期,不可为空
|
||||
end_date : date|None = None # 班级结课日期,可以为空,默认为空
|
||||
remark : str|None = None # 班级备注,可以为空,默认为空
|
||||
|
||||
# ————定义"更新班级"的"请求体"模型————
|
||||
class ClassUpdate( BaseModel ): # "更新"班级信息的请求体模型
|
||||
@@ -25,4 +25,4 @@ class ClassResponse( BaseModel ): # 班级信息的响应体模型
|
||||
code:int = 200 # 状态码,默认200
|
||||
detail:str = '执行成功' # 提示信息
|
||||
total:int = 0 # 数据总条数,默认为0
|
||||
data:str|dict|list|tuple # 返回的数据
|
||||
data:str|dict|list|tuple = '' # 返回的数据,默认为空字符串
|
||||
+16
-14
@@ -1,7 +1,8 @@
|
||||
from pydantic import BaseModel
|
||||
from datetime import date
|
||||
from pydantic import BaseModel, ConfigDict, Field, model_validator
|
||||
from typing import Literal
|
||||
|
||||
#新建学生请求体
|
||||
class StudentCreate(BaseModel):
|
||||
student_no: str | None = Field(default=None, min_length=1, max_length=50)
|
||||
student_name: str = Field(min_length=1, max_length=50)
|
||||
@@ -14,7 +15,7 @@ class StudentCreate(BaseModel):
|
||||
graduation_date: date | None = None
|
||||
education: str | None = Field(default=None, max_length=50)
|
||||
age: int = Field(ge=0, le=150)
|
||||
gender: str = Field(min_length=1, max_length=10)
|
||||
gender: Literal["男", "女"]
|
||||
|
||||
@model_validator(mode="after")
|
||||
def check_dates(self):
|
||||
@@ -23,18 +24,19 @@ class StudentCreate(BaseModel):
|
||||
raise ValueError("毕业日期不能早于入学日期")
|
||||
return self
|
||||
|
||||
#更新学生请求体
|
||||
class StudentUpdate(BaseModel):
|
||||
# 全部设为可选,前端只传需要修改的字段
|
||||
student_no: str | None = None
|
||||
student_name: str | None = None
|
||||
class_id: int | None = None
|
||||
consultant_id: int | None = None
|
||||
native_place: str | None = None
|
||||
graduation_school: str | None = None
|
||||
major: str | None = None
|
||||
enrollment_date: date | None = None
|
||||
graduation_date: date | None = None
|
||||
education: str | None = None
|
||||
age: int | None = None
|
||||
gender: str | None = None
|
||||
student_no: str | None = Field(default=None, min_length=1, max_length=50)
|
||||
student_name: str | None = Field(default=None, min_length=1, max_length=50)
|
||||
class_id: int | None = Field(default=None, gt=0)
|
||||
consultant_id: int | None = Field(default=None, gt=0)
|
||||
native_place: str | None = Field(default=None, max_length=100)
|
||||
graduation_school: str | None = Field(default=None, max_length=100)
|
||||
major: str | None = Field(default=None, max_length=100)
|
||||
enrollment_date: date | None = None
|
||||
graduation_date: date | None = None
|
||||
education: str | None = Field(default=None, max_length=50)
|
||||
age: int | None = Field(default=None, ge=0, le=150)
|
||||
gender: Literal["男", "女"] | None = None
|
||||
|
||||
|
||||
Reference in New Issue
Block a user