学院管理系统（mysql版）

Posted 2020-09-21 Talk is cheap

需求

用户角色，讲师＼学员， 用户登陆后根据角色不同，能做的事情不同，分别如下

讲师视图

　　管理班级，可创建班级，根据学员qq号把学员加入班级

　　可创建指定班级的上课纪录，注意一节上课纪录对应多条学员的上课纪录， 即每节课都有整班学员上， 为了纪录每位学员的学习成绩，需在创建每节上课纪录是，同时 为这个班的每位学员创建一条上课纪录

　　为学员批改成绩， 一条一条的手动修改成绩

学员视图

提交作业

查看作业成绩

一个学员可以同时属于多个班级，就像报了Linux的同时也可以报名Python一样， 所以提交作业时需先选择班级，再选择具体上课的节数

附加：学员可以查看自己的班级成绩排名

 

表结构

部分代码

from sqlalchemy import create_engine,Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import ForeignKey,Table
from sqlalchemy.orm import relationship


############创建数据表结构######################3
# 创建实例，并连接work库
engine = create_engine("mysql+pymysql://root:@localhost/home_work?charset=utf8")
Base = declarative_base()  # 生成orm基类

# 班级与讲师的对应关系表
teacher_m2m_class = Table("teacher_m2m_class",Base.metadata,
                          Column("teacher_id", Integer, ForeignKey("teacher.teacher_id")),
                          Column("class_id", Integer, ForeignKey("class.class_id")),
                          )

# 班级与学生的对应关系表
class_m2m_student = Table("class_m2m_student",Base.metadata,
                          Column("class_id",Integer,ForeignKey("class.class_id")),
                          Column("stu_id", Integer, ForeignKey("student.stu_id")),
                          )

class Class_m2m_Lesson(Base):
    \'\'\'班级和课节对应表\'\'\'
    __tablename__ = "class_m2m_lesson"
    id =  Column(Integer, primary_key=True)
    class_id = Column(Integer,ForeignKey("class.class_id"))
    lesson_id = Column(Integer, ForeignKey("lesson.lesson_id"))

    classes = relationship("Class",backref="class_m2m_lessons")
    lessons = relationship("Lesson", backref="class_m2m_lessons")

    def __repr__(self):
        return "%s %s" % (self.classes,self.lessons)

class Study_record(Base):
    "上课记录"
    __tablename__ = "study_record"
    id = Column(Integer,primary_key=True)
    class_m2m_lesson_id = Column(Integer,ForeignKey("class_m2m_lesson.id"))
    stu_id = Column(Integer, ForeignKey("student.stu_id"))
    status = Column(String(32),nullable=False)
    score = Column(Integer,nullable=True)

    class_m2m_lessons = relationship("Class_m2m_Lesson",backref="my_study_record")
    students = relationship("Student", backref="my_study_record")

    def __repr__(self):
       return  "\\033[35;0m%s,%s,状态：【%s】,成绩：【%s】\\33[0m"%(self.class_m2m_lessons,self.students,self.status,self.score)

class Teacher(Base):
    "讲师"
    __tablename__ = "teacher"
    teacher_id = Column(Integer, primary_key=True)
    teacher_name = Column(String(32), nullable=False, unique=True)   #唯一

    classes = relationship("Class", secondary=teacher_m2m_class, backref="teachers")

    def __repr__(self):
        return "讲师：【%s】"%self.teacher_name

class Class(Base):
    "班级"
    __tablename__ ="class"
    class_id = Column(Integer, primary_key=True)
    class_name = Column(String(32), nullable=False,unique=True)
    course =  Column(String(32), nullable=False)

    students = relationship("Student",secondary=class_m2m_student,backref="classes")

    def __repr__(self):
        return "班级名：【%s】"%self.class_name

class Student(Base):
    "学生"
    __tablename__ ="student"
    stu_id = Column(Integer, primary_key=True)
    stu_name = Column(String(32), nullable=False, unique=True)
    QQ =  Column(Integer(), nullable=False)

    def __repr__(self):
        return "学生名：【%s】"%self.stu_name

class Lesson(Base):
    "课节"
    __tablename__ = "lesson"
    lesson_id = Column(Integer, primary_key=True)
    lesson_name = Column(String(32), nullable=False, unique=True)

    def __repr__(self):
        return "节次名：【%s】"%self.lesson_name


Base.metadata.create_all(engine)

表结构

from sqlalchemy import desc
from .models import Teacher,Class,Student,Lesson,Class_m2m_Lesson,Study_record
import random

class  Student_Center(object):
    "学生视图"
    def __init__(self,session):
        self.session = session
        self.authentication()
        self.handler()

    def handler(self):
        while True:
            print(\'\'\'\\n\\33[35;1m———欢迎来【%s】进入学员管理系统————\\33[0m \\n
            \\33[34;0mup_homework 上传作业
            show_homework 查看作业成绩
            show_rank 查看班级排名
            exit 退出管理系统
            \\33[0m\'\'\' % self.student_obj.stu_name)
            user_func = input("\\033[34;0m请输入进行操作的命令:\\033[0m").strip()
            if hasattr(self, user_func):
                getattr(self, user_func)()

    def authentication(self):
        \'\'\'认证\'\'\'
        while True:
            student_name = input("\\033[34;0m请输入学生名:\\033[0m").strip()
            self.student_obj = self.session.query(Student).filter_by(stu_name=student_name).first()
            if not self.student_obj:
                print("\\33[31;1m输入错误：请输入有效的学生名\\33[0m")
                continue
            else:
                # print(self.teacher_obj)
                break

    def up_homework(self):
        "上传作业"
        class_name = input("\\033[34;0m请输入班级名:\\033[0m")

        for class_obj in self.student_obj.classes:
            print(class_obj.class_name)
            if class_name == class_obj.class_name:
                lesson_name = input("\\033[34;0m请输入的课节名（lesson）:\\033[0m")
                lesson_obj = self.session.query(Lesson).filter_by(lesson_name=lesson_name).first()

                if lesson_obj:  # 输入的lesson名字存在
                    class_m2m_lesson_obj = self.session.query(Class_m2m_Lesson).filter(
                        Class_m2m_Lesson.class_id == class_obj.class_id). \\
                        filter(Class_m2m_Lesson.lesson_id == lesson_obj.lesson_id).first()
                    if class_m2m_lesson_obj:  # 班级对应的课lesson表数据存在
                        study_record_obj = self.session.query(Study_record).filter(
                            Study_record.class_m2m_lesson_id == class_m2m_lesson_obj.id).filter(
                            Study_record.stu_id == self.student_obj.stu_id).first()

                        if study_record_obj:  # 上课记录存在
                            score = random.randint(10,100)
                            study_record_obj.score = score
                            self.session.commit()
                            print("上传成功")
                        else:
                            print("\\33[31;1m系统错误：当前上课记录已经创建\\33[0m")
                else:
                    print("\\33[31;1m系统错误：lesson未创建\\33[0m")

    def show_homework(self):
        \'\'\'查看作业成绩\'\'\'
        class_name = input("\\033[34;0m请输入学习记录的班级名:\\033[0m")
        class_obj = self.session.query(Class).filter_by(class_name=class_name).first()

        if class_obj:
            lesson_name = input("\\033[34;0m请输入学习记录的课节名（lesson）:\\033[0m")
            lesson_obj = self.session.query(Lesson).filter_by(lesson_name=lesson_name).first()

            if lesson_obj:  # 输入的lesson名字存在
                class_m2m_lesson_obj = self.session.query(Class_m2m_Lesson).filter(
                    Class_m2m_Lesson.class_id == class_obj.class_id). \\
                    filter(Class_m2m_Lesson.lesson_id == lesson_obj.lesson_id).first()

                if class_m2m_lesson_obj:  # 班级对应的课lesson表数据存在
                    study_record_objs = self.session.query(Study_record).filter(
                        Study_record.class_m2m_lesson_id == class_m2m_lesson_obj.id).all()
                    for obj in study_record_objs:
                        if obj.stu_id == self.student_obj.stu_id:
                            print(obj)

    def show_rank(self):
        \'\'\'查看排名\'\'\'

        class_name = input("\\033[34;0m请输入学习记录的班级名:\\033[0m")
        class_obj = self.session.query(Class).filter_by(class_name=class_name).first()

        if class_obj:
            lesson_name = input("\\033[34;0m请输入学习记录的课节名（lesson）:\\033[0m")
            lesson_obj = self.session.query(Lesson).filter_by(lesson_name=lesson_name).first()

            if lesson_obj:  # 输入的lesson名字存在
                class_m2m_lesson_obj = self.session.query(Class_m2m_Lesson).filter(
                    Class_m2m_Lesson.class_id == class_obj.class_id). \\
                    filter(Class_m2m_Lesson.lesson_id == lesson_obj.lesson_id).first()

                if class_m2m_lesson_obj:  # 班级对应的课lesson表数据存在
                    score_rank_obj = self.session.query(Study_record).order_by(desc(Study_record.score))
                    for obj in score_rank_obj:
                        if obj.class_m2m_lesson_id == class_m2m_lesson_obj.id:
                            print(obj)

学生视图

from .models import Teacher,Class,Student,Lesson,Class_m2m_Lesson,Study_record,class_m2m_student

class  Teacher_Center(object):
    "讲师视图"
    def __init__(self,session):
        self.session = session
        self.authentication()
        self.handler()

    def handler(self):
        while True:
            print(\'\'\'\\n\\33[35;1m———欢迎来【%s】进入讲师管理系统————\\33[0m \\n
        \\33[34;0mshow_classes 显示可管理的班级
        add_class 创建班级
        add_student 添加学员
        add_lesson 添加课程节次
        add_studyrecord 创建上课记录
        modify_scores 修改学员成绩
        exit 退出管理系统
        \\33[0m\'\'\' % self.teacher_obj.teacher_name)
            user_func = input("\\033[34;0m请输入进行操作的命令:\\033[0m").strip()
            if hasattr(self, user_func):
                getattr(self, user_func)()


    def authentication(self):
        \'\'\'认证\'\'\'
        while True:
            teacher_name = input("\\033[34;0m请输入讲师名:\\033[0m").strip()
            self.teacher_obj = self.session.query(Teacher).filter_by(teacher_name=teacher_name).first()
            if not self.teacher_obj:
                print("\\33[31;1m输入错误：请输入有效的讲师名\\33[0m")
                continue
            else:
                #print(self.teacher_obj)
                break


    def add_class(self):
        \'\'\'创建班级\'\'\'
        class_name = input("\\033[34;0m请输入创建班级的名称:\\033[0m")
        course = input("\\033[34;0m请输入创建班级的类型:\\033[0m")
        class_obj = self.session.query(Class).filter_by(class_name=class_name).first()
        if not class_obj:
            class_new = Class(class_name=class_name,course=course)
            self.teacher_obj.classes.append(class_new)
            self.session.add(class_new)
            self.session.commit()
            print("\\033[34;1m班级创建成功\\033[0m")
        else:
            print("\\33[31;1m系统错误：班级已经存在\\33[0m")


    def show_classes(self):
        \'\'\'查看所有的班级\'\'\'
        print(self.teacher_obj)
        for class_obj in self.teacher_obj.classes:
            print("讲师：【%s】\\t班级：【%s】\\t类型：【%s】" % (class_obj.teachers[0].teacher_name,
                                                 class_obj.class_name,class_obj.course))


    def add_student(self):
        \'\'\'添加学员\'\'\'
        class_name = input("\\033[34;0m请输入要添加学员的班级名:\\033[0m")
        class_obj = self.session.query(Class).filter_by(class_name=class_name).first()

        if class_obj and class_obj.teachers[0] == self.teacher_obj:
            stu_name = input("\\033[34;0m请输入学员的姓名:\\033[0m")
            QQ = input("\\033[34;0m请输入学员的QQ号:\\033[0m")
            student_obj = self.session.query(Student).filter_by(QQ = QQ).first()

            if student_obj:
                if student_obj.stu_name not in class_obj.students:
                    class_obj.students.append(student_obj)
                    self.session.add(class_obj)
                    self.session.commit()
                    print("\\033[34;1m学员添加成功\\033[0m")
                else:
                    print("\\33[31;1m系统错误：学员已经存在此班中\\33[0m")

            elif not student_obj:
                student_new = Student(stu_name=stu_name, QQ=QQ)
                class_obj.students.append(student_new)
                self.session.add(student_new)
                self.session.commit()
                print("\\033[34;1m学员添加成功\\033[0m")
            else:
                print("\\33[31;1m系统错误：学员已经存在\\33[0m")
        else:
            print("\\33[31;1m输入错误：班级不存在或没有权限管理此班级\\33[0m")


    def add_lesson(self):
        \'\'\'添加课程节次\'\'\'
        class_name = input("\\033[34;0m请输入要添加lesson的班级名:\\033[0m")
        class_obj = self.session.query(Class).filter_by(class_name=class_name).first()

        if class_obj and class_obj.teachers[0] == self.teacher_obj:     #输入的班级名存在且在属于当前老师管理
            lesson_name = input("\\033[34;0m请输入添加的lesson名（类day1）:\\033[0m")
            lesson_obj = self.session.query(Lesson).filter_by(lesson_name=lesson_name).first()
            if not lesson_obj:                                          #输入的lesson名字不存在
                print("lesson  不存在")
                lesson_obj = Lesson(lesson_name=lesson_name)                #增加lesson表数据
                self.session.add(lesson_obj)
                self.session.commit()

            rest = self.session.query(Class_m2m_Lesson).filter(Class_m2m_Lesson.class_id==class_obj.class_id).\\
                filter(Class_m2m_Lesson.lesson_id==lesson_obj.lesson_id).first()
            if not rest:                                                #如果class_m2m_lesson没有存储班级和课节的对应关系
                print("class:%s----lesson:%s"%(class_obj.class_id,lesson_obj.lesson_id))
                class_m2m_lesson_new = Class_m2m_Lesson(class_id=class_obj.class_id,lesson_id=lesson_obj.lesson_id)
                self.session.add(class_m2m_lesson_new)                  #创建class_m2m_lesson对应关系
                self.session.commit()

        else:
            print("\\33[31;1m输入错误：班级不存在或没有权限管理此班级\\33[0m")


    def add_studyrecord(self):
        \'\'\'添加学习记录\'\'\'
        class_name = input("\\033[34;0m请输入要添加学习记录的班级名:\\033[0m")
        class_obj = self.session.query(Class).filter_by(class_name=class_name).first()

        if class_obj and class_obj.teachers[0] == self.teacher_obj:  # 输入的班级名存在且在属于当前老师管理
            lesson_name = input("\\033[34;0m请输入添加学习记录的课节名（lesson）:\\033[0m")
            lesson_obj = self.session.query(Lesson).filter_by(lesson_name=lesson_name).first()
            if lesson_obj:                                       # 输入的lesson名字存在
                class_m2m_lesson_obj = self.session.query(Class_m2m_Lesson).filter(Class_m2m_Lesson.class_id == class_obj.class_id). \\
                    filter(Class_m2m_Lesson.lesson_id == lesson_obj.lesson_id).first()
                if class_m2m_lesson_obj:                                            # 班级对应的课lesson表数据存在

                    study_record_obj = self.session.query(Study_record).filter_by(class_m2m_lesson_id=class_m2m_lesson_obj.id).first()
                    if not study_record_obj:                                                    # 上课记录为创建
                        for student_obj in class_obj.students:
                            status = input("输入学生 %s 的上课状态（yes/no）："%student_obj.stu_name)
                            study_record_new = Study_record(class_m2m_lesson_id=class_m2m_lesson_obj.id,
                                                            stu_id=student_obj.stu_id,
                                                            status=status)
                            self.session.add(study_record_new)
                            self.session.commit()
                    else:
                        print("\\33[31;1m系统错误：当前上课记录已经创建\\33[0m")
                else:
                     print("\\33[31;1m系统错误：当前班级的lesson课节未创建\\33[0m")
            else:
                print("\\33[31;1m系统错误：lesson未创建\\33[0m")
        else:
            print("\\33[31;1m输入错误：班级不存在或没有权限管理此班级\\33[0m")


    def modify_scores(self):
        \'\'\'修改成绩\'\'\'
        class_name = input("\\033[34;0m请输入学习记录的班级名:\\033[0m")
        class_obj = self.session.query(Class).filter_by(class_name=class_name).first()

        if class_obj and class_obj.teachers[0] == self.teacher_obj:  # 输入的班级名存在且在属于当前老师管理
            lesson_name = input("\\033[34;0m请输入学习记录的课节名（lesson）:\\033[0m")
            lesson_obj = self.session.query(Lesson).filter_by(lesson_name=lesson_name).first()

            if lesson_obj:  # 输入的lesson名字存在
                class_m2m_lesson_obj = self.session.query(Class_m2m_Lesson).filter(
                    Class_m2m_Lesson.class_id == class_obj.class_id). \\
                    filter(Class_m2m_Lesson.lesson_id == lesson_obj.lesson_id).first()

                if class_m2m_lesson_obj:  # 班级对应的课lesson表数据存在
                    while True:
                        study_record_objs = self.session.query(Study_record).filter(
                                Study_record.class_m2m_lesson_id==class_m2m_lesson_obj.id).all()
                        for obj in  study_record_objs:
                            print(obj)

                        student_name = input("\\033[34;0m输入要修改成绩的学生名：[Q 退出]\\33[0m")
                        if student_name == "q" or student_name == "Q":break
                        student_obj = self.session.query(Student).filter_by(stu_name=student_name).first()
                        if student_obj:
                            study_record_obj = self.session.query(Study_record).filter(
                                Study_record.class_m2m_lesson_id==class_m2m_lesson_obj.id).filter(
                                Study_record.stu_id == student_obj.stu_id).first()

                            if study_record_obj:                            # 上课记录存在
                                score = input("\\033[34;0m输入修改后的成绩\\33[0m")
                                study_record_obj.score= score
                                self.session.commit()

                    else:
                        print("\\33[31;1m系统错误：当前上课记录已经创建\\33[0m")
                else:
                    print("\\33[31;1m系统错误：当前班级的lesson课节未创建\\33[0m")
            else:
                print("\\33[31;1m系统错误：lesson未创建\\33[0m")
        else:
            print("\\33[31;1m输入错误：班级不存在或没有权限管理此班级\\33[0m")


    def exit(self):
        exit()

教师视图

不足

1. readme文件写的不够详细，测试环境没有写详细
2. 入口文件路径不对
3. 代码存在现实逻辑缺陷（因为完成作业需求，暂时不计较）

完整代码

https://github.com/lixiaoliuer1229/work_demo/tree/master/day12