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
- readme文件写的不够详细，测试环境没有写详细
- 入口文件路径不对
- 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
时间： 2024-09-30 14:44:27