django学习_学生信息管理后台

一、功能：

1. 实现对学生对个人信息的增删查改
2. 实现后台对所有学生信息的操作

二、此后台采用的是MVC的风格模式进行编码

1.VIEWS部分

from django.http import HttpResponse
from django.shortcuts import render
from .models import Student, OneClass

# from django.http import request
# Create your views here.
def index(request):
    return render(request, 'index.html')

def add(request):
    name = request.GET.get('name')
    age = request.GET.get('age')
    learn = request.GET.get('learn')
    type1 = request.GET.get('type1')
    # type 为1表示执行数据库操作，否则只是跳转页面
    if type1 == '1':
        Student.objects.create(name=name, age=age, learn=learn)  # 在student 表里新建一条记录
        # return render(request, 'add.html',)
    return render(request, 'add.html')

def delete(request):
    name = request.GET.get('name')
    type1 = request.GET.get('type1')
    # type 为 1 表示执行数据库查询操作
    # if type1 == '1':
    #     # 查询所在记录
    #     try:
    #         stu: Student = Student.objects.filter(name=name).get()
    #     except Exception:
    #         return HttpResponse("无此记录")
    #     return render(request, 'delete.html', {'stu': stu})
    # type 为 2 表示执行数据库确认删除操作
    if type1 == '2':
        try:
            Student.objects.filter(name=name).get()
        except Exception:
            return HttpResponse("无此记录")
        Student.objects.filter(name=name).delete()   # 按照姓名， 进行过滤
        return render(request, 'delete.html', {'msg': '删除成功'})
    return render(request, 'delete.html')

def update(request):
    name = request.GET.get('name')
    age = request.GET.get('age')
    learn = request.GET.get('learn')
    type1 = request.GET.get('type1')
    # type 为1表示执行数据库操作，否则只是跳转页面
    if type1 == '1':
        try:
            stu = Student.objects.get(name=name)
            stu.name = name
            stu.age = age
            stu.learn = learn
            stu.save()
            return render(request, "update.html", {'msg': '修改成功'})
        except Exception:
            return HttpResponse("无此记录")
    return render(request, 'update.html')

def query(request):
    name = request.GET.get('name')
    type1 = request.GET.get('type1')
    # type 为1表示执行数据库操作，否则只是跳转页面
    if type1 == '1':
        if name == 'all':
            stu_list = Student.objects.all()
            return render(request, 'query.html', {'stu_list': stu_list})
        try:
            Student.objects.filter(name=name).get()
        except Exception:
            return HttpResponse("无此记录")
        stu = Student.objects.get(name=name)  # 在student 表里查询一条记录
        return render(request, 'query.html', {'stu': stu})

    return render(request, 'query.html')

2.MODELS 部分

from django.db import models

# Create your models here.
# 学生类模板
class Student(models.Model):
    name = models.CharField(max_length=20)
    age = models.IntegerField()
    learn = models.CharField(max_length=20)

# 教师类模板
class Teacher(models.Model):
    name = models.CharField(max_length=20)
    age = models.IntegerField()
    teach = models.CharField(max_length=20)
    student = models.ManyToManyField(Student, through="OneClass")

# 班级类模板
class OneClass(models.Model):
    name = models.CharField(max_length=50)
    teacher = models.ForeignKey('Teacher', on_delete=models.CASCADE)
    student = models.ForeignKey('Student', on_delete=models.CASCADE)

　　

3.CONTROLLER部分

• URL配置

from django.conf.urls import url
from . import views

urlpatterns=[
    url(r'^index', views.index),
    url(r'^add', views.add),
    url(r'^delete', views.delete),
    url(r'^query', views.query),
    url(r'^update', views.update)
]

　　

五、功能展示 
1.主界面（功能选择）

2.增加学生信息

3.查询学生信息

4.删除学生信息

作者：含笑半步颠√

博客链接：https://www.cnblogs.com/lixy-88428977

声明：本文为博主学习感悟总结，水平有限，如果不当，欢迎指正。如果您认为还不错，欢迎转载。转载与引用请注明作者及出处。