1、创建model类
app01/models.py
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from django.db import models
# Create your models here.class UserInfo(models.Model): #创建model类，必须继承自models.Model类
# 设计表结构和字段，最大长度,默认表名app01_userinfo
email = models.CharField(max_length=16)
pwd = models.CharField(max_length=20)
2、注册app
settings.py
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INSTALLED_APPS = [ 'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'app01',
]3、执行命令创建表
cmd> python manage.py makemigrations 生成源信息，一个字典，位置：app01/migrations/0001_initial.py
cmd> python manage.py migrate 读取生成的源信息，去生成数据库表
4、查看
4.1、用navicat-SQLite工具查看
4.2、用程序查看
app01/admin.py
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from app01 import models
admin.site.register(models.UserInfo) #把UserInfo创建的表注册进admin页面浏览器访问http://127.0.0.1:8000/admin/
点进去后就可以添加用户
5、现在有一个用户user1，登录成功后跳转到index页面,列出数据库表里的所有用户信息。
app01/views.py
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from django.shortcuts import render
from django.shortcuts import redirect
def login(request):
if request.method == 'POST':
input_email = request.POST['email']
input_pwd = request.POST['pwd']
if input_email == 'user1@qq.com' and input_pwd == '123':
return redirect("/index/") #登录成功后跳转到index页面
else:
return render(request,"login.html",{"status":"用户名密码错误"})
return render(request,'login.html')
def index(request):
#从数据库中获取数据，并和html渲染
from app01 import models
#获取表中所有数据
user_info_list = models.UserInfo.objects.all()
return render(request,'index.html',{"user_info_list":user_info_list,})
urls.py
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from django.conf.urls import url
from django.contrib import admin
from app01 import views
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^login/', views.login),
url(r'^index/', views.index),
]templates/index.html
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<!DOCTYPE html><html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div>
<table>
<thead>
<tr>
<th>邮箱</th>
<th>密码</th>
</tr>
</thead>
<tbody>
{% for line in user_info_list %}
<tr>
<td>{{ line.email }}</td>
<td>{{ line.pwd }}</td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
</body>
</html>
浏览器访问 http://127.0.0.1:8000/login/
登录成功后跳转到 http://127.0.0.1:8000/index/，列出所有的刚才手动在页面创建的用户。
6、model添加数据
index.html
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<form action="/index/" method="post">
<input type="text" name="em" />
<input type="text" name="pw" />
<input type="submit" value="添加" />
</form>
views.py
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def index(request): #从数据库中获取数据，并和html渲染
from app01 import models
#添加数据
if request.method=='POST':
input_em = request.POST['em']
input_pw = request.POST['pw']
models.UserInfo.objects.create(email=input_em,pwd=input_pw)
#获取表中所有数据
user_info_list = models.UserInfo.objects.all()
return render(request,'index.html',{"user_info_list":user_info_list,})
7、model删除数据
index.html
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<form action="/index/" method="post">
<input type="text" name="email_del">
<input type="text" name="pwd_del">
<input type="submit" value="删除">
</form>
views.py
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def index(request):
from app01 import models
#删除数据
if request.method=='POST':
input_email = request.POST['email_del']
models.UserInfo.objects.filter(email=input_email).delete()
8、model更新数据
index.html
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<form action="/index/" method="post">
<input type="text" name="email_update">
<input type="text" name="pwd_update">
<input type="submit" value="更新">
</form>views.py
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def index(request):
#更新数据
if request.method=='POST':
input_em = request.POST['email_update']
input_pw = request.POST['pwd_update']
models.UserInfo.objects.filter(email=input_em).update(pwd=input_pw)
