数据库表的增删改查学生信息管理

使用post方法，csrf必须注释掉

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    #'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

models

from django.db import models

# Create your models here.
class Classes(models.Model):#班级表
    title=models.CharField(max_length=32)
    m=models.ManyToManyField('Teacheres')#加上引号，全执行完后才来执行，表的多对多

class Teacheres(models.Model):#教师表
    name=models.CharField(max_length=32)

class Student(models.Model):
    username=models.CharField(max_length=32)
    age=models.IntegerField()
    #gender=models.BooleanField()布尔值
    gender = models.NullBooleanField()#可以为空的布尔值
    cs=models.ForeignKey(Classes)#这个classes不用加引号，因为在上面，顺序执行

urls,^这个必须加，记住

from django.conf.urls import url
from django.contrib import admin
from app.views import classes
urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^classes.html$',classes.get_classes),#不加^访问点击页面没反应
    url(r'^add_classes.html$',classes.add_classes),
    url(r'^del_classes.html$', classes.del_classes),
    url(r'^edit_classes.html$',classes.edit_classes),

]

views.py删除，新建文件夹，views里面建classes.py文件，内容如下

from django.shortcuts import render
from django.shortcuts import redirect
from app import models
def get_classes(request):

    cls_list=models.Classes.objects.all()

    return render(request,'get_classes.html',{'cls_list':cls_list})

def add_classes(request):
    if request.method == 'GET':
        return render(request, 'add_classes.html')
    elif request.method == 'POST':
        title1=request.POST.get("title")
        models.Classes.objects.create(title=title1)
        return redirect('/classes.html')
         #url路径不是html文件

def del_classes(request):
    nid=request.GET.get("nid")
    models.Classes.objects.filter(id=nid).delete()
    return redirect("/classes.html")

def edit_classes(request):
    if request.method=="GET":
        nid=request.GET.get('nid')
        obj=models.Classes.objects.filter(id=nid).first()
        return render(request,'edit_classes.html',{'obj':obj})
    elif request.method=="POST":
        nid = request.GET.get('nid')
        title=request.POST.get('abc')
        models.Classes.objects.filter(id=nid).update(title=title)
        return redirect("/classes.html")

get_classes.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div><a href="/add_classes.html">添加</a></div>
<div> <table border="1">
    <thead>
    <tr>
        <th>ID</th>
        <th>名称</th>
        <th>操作</th>
    </tr>
</thead>
    <tbody>
    {% for row in cls_list %}
        <tr>
        <td>{{ row.id }}</td>
        <td>{{ row.title }}</td>
        <td><a href="del_classes.html?nid={{ row.id }}">删除</a>
            |
        <a href="edit_classes.html?nid={{ row.id }}">修改</a>
        </td>
        </tr>
    {% endfor %}
    </tbody>
</table></div>
</body>
</html>

add_class.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="add_classes.html" method="POST">
    {% csrf_token %}<!--提交数据-->
    <input type="text"name="title">
    <input type="submit"value="提交">
</form>
</body>
</html>

edit_classes.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="edit_classes.html?nid={{ obj.id }}"method="POST">
    {% csrf_token %}
<input type="text"name="abc"value="{{ obj.title }}">
<input type="submit"value="提交"></form>
</body>
</html>

数据库表的增删改查学生信息管理

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