Django 使用 cookie 實現簡單的用戶管理

時間 2019-12-09

標籤 django 使用 cookie 實現簡單用戶管理欄目 Python 简体版

原文原文鏈接

1.保存在用戶瀏覽器
2.能夠主動清除
3.能夠被僞造
4.跨域名 Cookie 不共享html

建立一個項目：user_manager 和應用： app01python

建立數據庫，添加 models.py

from django.db import models

# Create your models here.


class Classes(models.Model):
    caption = models.CharField(max_length=32)


class Student(models.Model):
    name = models.CharField(max_length=32)
    cls = models.ForeignKey(Classes, on_delete=models.CASCADE)


class Teacher(models.Model):
    name = models.CharField(max_length=32)
    cls = models.ForeignKey(Classes, on_delete=models.CASCADE)


class Administrator(models.Model):
    username = models.CharField(max_length=32)
    password = models.CharField(max_length=32)

修改 urls.py

from django.contrib import admin
from django.urls import path

from app01 import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('login.html', views.login),
    path('index.html', views.index),
]

在 templates 文件夾下建立兩個 html 文件

# login.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="login.html" method="post">
    {% csrf_token %}
    <div>
        <label for="user">用戶名: </label>
        <input id="user" type="text" name="user">
    </div>
    <div>
        <label for="pwd">密碼: </label>
        <input id="pwd" type="password" name="pwd">
    </div>
    <div>
        <label></label>
        <input type="submit" value="登陸">
        <span style="color: red;">{{ msg }}</span>
    </div>
</form>

</body>
</html>

# index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1> Hello {{ username }} </h1>

</body>
</html>

添加 views.py

from django.shortcuts import render, redirect


# Create your views here.
from app01 import models


def login(req):
    # models.Administrator.objects.create(
    #     username='klvchen',
    #     password='klvchen'
    # )

    message = ""
    if req.method == "POST":
        user = req.POST.get('user')
        pwd = req.POST.get('pwd')
        c = models.Administrator.objects.filter(username=user, password=pwd).count()
        if c:
            rep = redirect('index.html')
            rep.set_cookie('username', user)
            return rep
        else:
            message = "用戶名或密碼錯誤"
    return render(req, 'login.html', {'msg': message})


def index(req):
    username = req.COOKIES.get('username')
    if username:
        return render(req, 'index.html', {'username': username})
    else:
        return redirect('/login.html')

初始化數據庫

python manage.py makemigrations
python manage.py migrate

啓動

python manage.py runserver 8000

訪問 http://127.0.0.1:8000/index.html

輸入錯誤的用戶名或密碼

輸入正確的用戶名和密碼

數據庫

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