下面小编就为大家带来一篇python django 增删改查操作 数据库mysql。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧
下面介绍一下django增删改查操作：
1、view.py
# -*- coding: utf-8 -*-from __future__ import unicode_literalsfrom django.http import HttpResponsefrom polls.models import Testfrom django.shortcuts import render# Create your views here.# 解决乱码import sysreload(sys)sys.setdefaultencoding('utf-8')# 数据库操作def testdb(request): test1 = Test(name='温鸿雨2') test1.save() return HttpResponse("数据添加成功！
")# 查询数据库def selectDB(request): # 通过objects这个模型管理器的all()获得所有数据行，相当于SQL中的SELECT * FROM list = Test.objects.all() returnvalue = [] for v in list: returnvalue.append(v.name) print v.name print "++++++++++++获取单个对象++++++++++++++++++" # 获取单个对象 response1 = Test.objects.filter(id=1) print response1 for v1 in response1: returnvalue2 = "id : ", v1.id, " 姓名：", v1.name print returnvalue2 print "++++++++++++限制返回的数据 相当于 SQL 中的 OFFSET 0 LIMIT 2;++++++++++++++++++" response2 = Test.objects.order_by('name')[0:2] returnvalue3 = {} for v2 in response2: returnvalue3[v2.id] = v2.name print returnvalue3.items() print "+++++++++++输出结果：++++++++++++++++++++++++++++++" return HttpResponse(returnvalue3.items())#修改数据可以使用 save() 或 update():def updateDB(request): # 修改其中一个id=1的name字段，再save，相当于SQL中的UPDATE test1 = Test.objects.get(id=1) test1.name = 'Google' test1.save() # 另外一种方式 #Test.objects.filter(id=1).update(name='Google') # 修改所有的列 # Test.objects.all().update(name='Google') return HttpResponse("更新数据成功")def deleteDB(request): # 删除id=1的数据 test1 = Test.objects.get(id=3) test1.delete() return HttpResponse("删除数据成功")
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2、urls.py
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"""pythondjango URL ConfigurationThe `urlpatterns` list routes URLs to views. For more information please see: https://docs.djangoproject.com/en/1.11/topics/http/urls/Examples:Function views 1. Add an import: from my_app import views 2. Add a URL to urlpatterns: url(r'^$', views.home, name='home')Class-based views 1. Add an import: from other_app.views import Home 2. Add a URL to urlpatterns: url(r'^$', Home.as_view(), name='home')Including another URLconf 1. Import the include() function: from django.conf.urls import url, include 2. Add a URL to urlpatterns: url(r'^blog/', include('blog.urls'))"""from django.conf.urls import urlfrom django.contrib import adminfrom BlogDjango import viewsfrom polls import views as pollsviews, search, search2urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^hello/+d', views.hello), url(r'^base/', views.base), url(r'^testdb$', pollsviews.testdb), url(r'^querydb$', pollsviews.selectDB), url(r'^updateDB$', pollsviews.updateDB), url(r'^deleteDB$', pollsviews.deleteDB),]
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3、models.py
# -*- coding: utf-8 -*-from __future__ import unicode_literalsfrom django.db import models# Create your models here.class Test(models.Model): name = models.CharField(max_length=20)
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