如何使用django login_required装饰器进行自定义身份验证后端

Question

我创建了一个身份验证后端，允许用户使用其用户名，密码和机构ID登录。尽管用户可以登录，但无法使用login_required装饰访问视图。当我登录该站点时，它会重定向到以下URL：“ http://xxx.xx.xx.x:xxxx/accounts/login/?next=/accounts/rhome/”。此外，我无法在html模板中获取{{user.username}}。在这种情况下，如何在特定视图上设置身份验证限制（或login_requied装饰）？任何建议将不胜感激。

这是我尝试过的。 backends.py：

class AuthBackend(object):
    supports_object_permissions = True
    supports_anonymous_user = False
    supports_inactive_user = False

def get_user(self, user_id):
   try:
      return User.objects.get(pk=user_id)
   except User.DoesNotExist:
      return None

def authenticate(self, username=None, password=None, institute_id=None):
    try:
        userid = User.objects.get(username=username)
        profile = Profile.objects.get(
            Q(user_id=userid.id) & Q(institute_id=institute_id)
        )
        user = User.objects.get(id = profile.user_id)
        if user.check_password(password):
            return user
    except ObjectDoesNotExist:
        return None

View.py：

from django.shortcuts import render, redirect, get_object_or_404
from django.contrib.auth import login as auth_login, logout, authenticate
from django.contrib.auth.models import User
from django.contrib.auth.decorators import login_required
from django.http import HttpResponse, HttpResponseRedirect
from .backends import AuthBackend


def user_login_view(request):
    if request.method == 'POST':
        institute_id = request.POST.get('institute_id')
        username = request.POST.get('username')
        password = request.POST.get('password')
        user = AuthBackend.authenticate(request, username=username, password=password, institute_id=institute_id)
        if user:
            if user.is_active:
                auth_login(request, user, backend='fileupload_project.accounts.backends.AuthBackend')
                return redirect("accounts:rhome")

            else:
                return HttpResponse("Your account is disabled.")
        else:
            messages.error(request, 'Invalid login details supplied')
            return HttpResponseRedirect(reverse('accounts:login'))
    else:
        return render(request, 'accounts/login.html', {}) 

@login_required
def home(request):
    return render(request, 'accounts/index.html')

urls.py：

app_name = 'accounts'
urlpatterns = [
    url(r'^login/$', views.user_login_view, name='login'),
    url(r'^rhome/$', views.home, name='rhome'),]

Settings.py：

LOGIN_URL  = '/accounts/login'
LOGIN_REDIRECT_URL = '/accounts/rhome/'
LOGOUT_REDIRECT_URL = '/accounts/logout/'

#Authentication backends
AUTHENTICATION_BACKENDS = (
        'accounts.backends.AuthBackend',
        'django.contrib.auth.backends.ModelBackend',)

Template / login.html：

<form id="login_form" method="post" action="{% url 'accounts:login' %}">
            {% csrf_token %}
        <br><br>
        <div class="avatar">
            <img alt="Avatar" height="180" src="{% static 'accounts/images/avatar.jpg' %}" width="180">
        </div>
        <h2 class="text-center">User Login</h2>
        <div class="form-group">
            <input id="institute_id" type="text" class="form-control" name="institute_id" placeholder="Center ID" required="required">
        </div>
        <div class="form-group ">
            <input id="username" type="text" class="form-control" name="username" placeholder="Username" required="required">
        </div>
        <div class="form-group">
            <input id="password" type="password" class="form-control" name="password" placeholder="Password" required="required">
        </div>

        <div class="form-group">
            <button type="submit" class="btn btn-primary btn-lg btn-block">Sign in</button>
            {% if messages %}
                {% for message in messages %}
                    <p class="alert alert-warning" >{{ message }}</p>
                {% endfor %}
            {% endif %}
        </div>
        <div class="clearfix">
            <label class="pull-left checkbox-inline"><input type="checkbox"> Remember me</label>
            <a href="#" class="pull-right">Forgot Password?</a>
        </div>
      </form>