登陸頁面開發

form表單　action默認當前頁

from django.contrib.auth import authenticate　自帶驗證

用戶登陸後，會把用戶對象封裝到request

AnonymousUser   匿名用戶

login(request,user)　將user封裝到request.user　　至關於  request.user=user

logout(request)　　退出清空信息

settings.py　　LOGIN_URL=' / login / '　　未登陸訪問網頁會跳轉登陸頁面

from django.shortcuts import render,redirect
from django.contrib.auth import authenticate,login,logout


# Create your views here.


def acc_login(request):
    error_msg = ''
    if request.method == "POST":
        username = request.POST.get('username')
        password = request.POST.get('password')

        user = authenticate(username=username,password=password)
        if user:
            print("passed authencation",user)
            login(request,user)
            #request.user = user

            return  redirect( request.GET.get('next','/') )
        else:
            error_msg = "Wrong username or password!"
    return render(request, 'login.html', {'error_msg':error_msg})


def acc_logout(request):
    logout(request)
    return redirect("/login/")

views

{% extends 'index.html' %}
{% block extra-css %}


        <link href="/static/css/signin.css" rel="stylesheet">

{% endblock %}


{% block body %}
<div class="container">

      <form class="form-signin" method="post">{% csrf_token %}
        <h2 class="form-signin-heading">Oldboy PerfectCRM</h2>
        <label for="inputEmail" class="sr-only">Username</label>
        <input type="text" id="" name="username" class="form-control" placeholder="Username" required autofocus>
        <label for="inputPassword" class="sr-only">Password</label>
        <input type="password" name="password" class="form-control" placeholder="Password" required>
         <span style="color: red">{{ error_msg }}</span>
        <div class="checkbox">
          <label>
            <input type="checkbox" value="remember-me"> Remember me
          </label>
        </div>
        <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
      </form>

</div> <!-- /container -->



{% endblock %}

login.html