Django--model模型绑定

1、创建model类

app01/models.py

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

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

1 2	`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

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

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

<!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

<form action="/index/" method="post">

<input type="text" name="em" />

<input type="text" name="pw" />

<input type="submit" value="添加" />

</form>

views.py

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

<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

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

<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

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)

9、页面验证：

来自为知笔记(Wiz)