登录功能

模板页面

sign/templates/index.html

<!DOCTYPE html>
<html>
<head>
  <title>Login Page</title>
</head>
<body>
  <h1>发布会管理</h1>
  <form action="/login/" method="post">
    <label for="username">Username:</label>
    <input type="text" id="username" name="username" required><br><br>

    <label for="password">Password:</label>
    <input type="password" id="password" name="password" required><br><br>

    <button id="btn" type="submit">登录</button>
      {% csrf_token %}
  </form>
</body>

</html>

备注：

CSRF verification failed. Request aborted.

表格需要加一个 {% csrf_token %} 的标签。csrf 全称是 Cross Site Request Forgery。这是 Django 提供的防止伪装提交请求的功能。POST 方法提交的表格，必须有此标签。

再次使用POST请求，可以看到客户端提交带有一个token值

登录视图

from django.http import HttpResponse, Http404
from django.shortcuts import render

# Create your views here.
def index(request):
    return render(request,"index.html")

def login(request):
    if request.method=='POST':
        username=request.POST.get("username",'')
        password=request.POST.get("password",'')
        if username=='admin' and password=="admin123":
            return HttpResponse("登录成功")
        else:
            return render(request,'index.html',context={'error':'username or password error!'})

向服务器提交请求时，服务器可以通过request获取用户提交值

如获取POST请求中提交的name为username的值

<input type="text" id="username" name="username" required><br><br>

request.POST["username"]

或者 request.POST.get('username','')

获取请求名称：request.method

这里用返回了一个字符串

return HttpResponse("登录成功")

事件管理

模板页面

sign/templatesevent_manage.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Event Manage Page</title>
</head>
<body>
<h1>嗨 {{user}} 欢迎</h1>

</body>
</html>

视图函数

from django.http import HttpResponse, Http404,HttpResponseRedirect
from django.shortcuts import render

# Create your views here.
def index(request):
    return render(request,"index.html")

def login(request):
    if request.method=='POST':
        username=request.POST.get("username",'')
        password=request.POST.get("password",'')
        if username=='admin' and password=="admin123":
            response=HttpResponseRedirect('/event_manage/')
            response.set_cookie('user',username,3600)
            return response
        else:
            return render(request,'index.html',context={'error':'username or password error!'})

def event_manage(request):
    username=request.COOKIES.get('user','')
    return render(request,'event_manage.html',{"user":username})

httpresponserediect为重定向，登录后页面被重定向至实践管理页面