增加、修改、删除

第一;,models.py建表

from django.db import models# Create your models here.class Book(models.Model): #必须继承models.Model这个类，jango才能识别Book是一张表name=models.CharField(max_length=20)#charfield字符串类型，长度20#price=models.FloatField()price=models.IntegerField ()pub_date=models.DateField()author=models.CharField(max_length=32,null=False)class Author(models.Model):name=models.CharField(max_length=32)

第二 urls.py 建立连接

from django.conf.urls import url
from django.contrib import adminfrom app import viewsurlpatterns = [url(r'^admin/', admin.site.urls),url(r'index',views.index),url(r'addbook',views.addbook),url(r'update',views.update),url(r'delete',views.delete),]

第三：views.py 写处理函数

from django.shortcuts import render,HttpResponse
from app.models import *# Create your views here.
def index(request):return render(request,"index.html")
def addbook(request):#Book，使用导入from app.models import *b=Book(name="java",price=99,author="qiqi",pub_date="1456-12-12")b.save()#save执行，则上面语句成功#Book.objects.create(name="",。。。)另一种添加数据，不需要savereturn HttpResponse("添加成功")#要想此句需要from django.shortcuts import render,HttpResponse
def update(request):Book.objects.filter(name="java").update(price="990")#修改方法一# #修改方法二# b=Book.objects.get(name="java")#拿到的b是列表类型是queryset集合的# b[0].price=100# b[0].save()return HttpResponse("修改成功")
def delete(request):Book.objects.filter(name="java").delete()return HttpResponse("删除成功")

输入python manage.py rnserver 8800 访问127.0.0.1：8800/index

第四部：index.html

"en">
"UTF-8">


class="outer">
class="head">标题
class="content">"/addbook/">添加书籍"delete">删除书籍"update">修改书籍