Cookie-based and session-based logon verification and cookiesession Verification

Cookie-based and session-based logon verification and cookiesession Verification

Settings. py

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',]

Generally, you do not need to modify settings. py, but you need to modify the template as follows: (Change DIRS in TEMPLATES to [OS. path. join (BASE_DIR, 'templates')])

TEMPLATES = [    {        'BACKEND': 'django.template.backends.django.DjangoTemplates',        'DIRS':  [os.path.join(BASE_DIR, 'templates')],        'APP_DIRS': True,        'OPTIONS': {            'context_processors': [                'django.template.context_processors.debug',                'django.template.context_processors.request',                'django.contrib.auth.context_processors.auth',                'django.contrib.messages.context_processors.messages',            ],        },    },]

 

Urls. py

from django.urls import pathfrom cookie import viewsurlpatterns = [    path('admin/', admin.site.urls),    path('login/',views.login),    path('index/',views.index),]

Models. py

from django.db import models# Create your models here.class User(models.Model):    user=models.CharField(max_length=20,unique=True,db_index=True)    pwd=models.CharField(max_length=20,db_index=True)    def __str__(self):        return self.user

Views. py

From django. shortcuts import render, redirect
From. models import User


# Create your views here.
Def login (request ):
Msg =''
If request. method = 'post ':
Name = request. POST. get ("user ")
Pwd = request. POST. get ("pwd ")
C = User. objects. filter (user = name, pwd = pwd). count ()
If c:
Request. session ['is _ log'] = 111
Request. session ['username'] = name
Return redirect ('/index /')
Else:
Msg = 'incorrect user name or password'
Return render (request, 'login.html ', {'msg': msg })
Else:
Return render (request, 'login.html ', {'msg': msg })


Def index (request ):
Print (request. session. get ('is _ log '))
If request. session. get ('is _ log', None ):
User = request. session. get ('username ')
Return render (request, 'index.html ', {'user': user })
Else:
Return redirect ('/login /')


Def bb (request ):
Return redirect ('/login /')

Index.html

<! DOCTYPE html> 
Login.html
<! DOCTYPE html> 
Note: Because we store sessions in the database, we need to execute python manage. py makemigrations and then execute python manage. py migrate to create a data table.