1 set cookie s
In this case, the application name is cookie
Model model
from django.db import models
from django.db import models class UserInfo(models.Model): username = models.CharField(max_length=64) password = models.CharField(max_length=64)
Database migration
python manage.py makemigrations
python manage.py migrate
Add data to database
Routing urls
from django.contrib import admin from django.urls import path from cookie import views urlpatterns = [ path('admin/', admin.site.urls), path('login/', views.login), path('index/', views.index), ]
View function
from django.shortcuts import render, redirect, HttpResponse from cookie import models def login(request): ret = "" if request.method == "POST": user = request.POST.get("user") pwd = request.POST.get("pwd") # Query user name and password in database user_obj = models.UserInfo.objects.filter(username=user, password=pwd).first() if user_obj: """ //If the validation passes, redirect to index and set the cookie """ obj = redirect("/index/") obj.set_cookie("is_login", True, 30) # cookie Valid for 30 seconds obj.set_cookie("username", user_obj.username) return obj else: ret = "Wrong user name or password" return render(request, "login.html", {"ret": ret}) def index(request): is_login = request.COOKIES.get("is_login") username = request.COOKIES.get("username") if not is_login: return redirect("/login/") return render(request, "index.html", { "user": username })
Template page
login.html
<body> <h3>User login page</h3> <form action="/login/" method="post"> {% csrf_token %} <p>User name:<input type="text" name="user"></p> <p>Password:<input type="password" name="pwd"></p> <p><span>{{ ret }}</span></p> <input type="submit" value="Sign in" class="sub_btn"> </form> </body>
Homepage index.html
<body> <h3>This is index Page. Hello {{ user }}</h3> </body>
Let's visit and test
Click login
As you can see, you have jumped to the index page as expected
Let's take a look at the cookie s set up
Take another look at the cookie value when redirecting access
2 set session
Create application
python manage.py startapp session
Registration application
settings.py
INSTALLED_APPS = [ ... 'cookie.apps.CookieConfig', 'session.apps.SessionConfig' ]
Routing urls
..... from session import views as session_views urlpatterns = [ ...... path('session_login', session_views.session_login), path('session_index', session_views.session_index), path('session_logout', session_views.session_logout), ]
View function
from django.shortcuts import render, redirect from cookie import models # Because we need data, we need to eat cookie Import in app def session_login(request): ret = "" if request.method == "POST": user = request.POST.get("user") pwd = request.POST.get("pwd") user_obj = models.UserInfo.objects.filter(username=user, password=pwd).first() if user_obj: """ //If the verification passes, set the session and return the session [index] """ request.session["is_login"] = True request.session["username"] = user_obj.username obj = redirect("/session_index/") return obj else: ret = "Wrong user name or password" return render(request, "session_login.html", {"ret": ret})
def session_index(request): is_login = request.session.get("is_login") username = request.session.get("username") if not is_login: """If not, go to the login page""" return redirect("/session_login") return render(request, "session_index.html", {"user": username}) def session_logout(request): request.session.flush() return redirect("/session_login/")
Template page
session_index.html
<h3>Be based on session User login for</h3> <form action="/session_login/" method="post"> {% csrf_token %} <p>User name:<input type="text" name="user"></p> <p>Password:<input type="password" name="pwd"></p> <p><span>{{ ret }}</span></p> <input type="submit" value="Sign in" class="sub_btn"> </form>
session_index.html
<body> <h3>This is session_index Page.</h3> <h3>Hello {{ user }}</h3> <a href="/session_logout/">Cancellation</a> </body>
Down test
You can see that the session table in the database already has data. The session key is randomly generated, which is the cookie key carried during the request. The session data is
request.session["is_login"] = True
request.session["username"] = user_obj.username, the number encrypted by some algorithm
Let's take a look at the page
