HttpResponse对象错误

Question

我得到的错误视图registration.views.login没有返回HttpResponse对象。

我正在创建一个登录应用程序，我希望当我点击登录按钮主页显示给我。

给出然后我得到的页面错误未找到本地主机当我运行view.py：8000 /注册/ home.html的

from django.template import loader 
from django.shortcuts import render 
from registration.models import Registration 
from django.http import HttpResponse 
from django.template import RequestContext 


def login(request): 
    t = loader.get_template('registration/login.html') 

    return render(request, 'registration/login.html') 

的urls.py文件如下：

from django.conf.urls import patterns, include, url 
from django.contrib import admin 
admin.autodiscover() 

    urlpatterns = patterns('', 
     url(r'^polls/$', 'polls.views.index'), 
     url(r'^polls/(?P<poll_id>\d+)/$', 'polls.views.detail'), 
     url(r'^polls/(?P<poll_id>\d+)/results/$', 'polls.views.results'), 
     url(r'^polls/(?P<poll_id>\d+)/vote/$', 'polls.views.vote'), 
     url(r'^admin/', include(admin.site.urls)), 
     url(r'^registration/$', 'registration.views.login'), 

，当我尝试为运行view.py：

from django.template import loader 
from django.shortcuts import render 
from registration.models import Registration 
from django.http import HttpResponse 
from django.template import RequestContext 

def login(request): 
    t = loader.get_template('registration/login.html') 
    if request.method == "POST": 
    username = request.POST['user_name'] 
    password = request.POST['password'] 
    user = authenticate(username=username, password=password) 
    if user is not None: 
     if user.is_active: 
     login(request, user) 
     # success 
     return render_to_response(request,'registration/login.html') 

然后我得到错误视图registration.views.login没有返回HttpResponse对象。 的urls.py文件保持相同此view.py

Answer 1

您不需要在每种方法中加载模板; django会为你照顾的。 Django要求所有从urls.py调用的方法返回一个HttpResponse对象。

你的方法有很多条件，永远不会达到return语句。例如，如果用户不活跃？如果请求不是POST？

试试这个版本中，如果任何一个条件出现故障，用户会被重定向回到注册页面：`在

def login(request): 
    # t = loader.get_template('registration/login.html') - not needed 
    if request.method == "POST": 
    username = request.POST.get('user_name') 
    password = request.POST.get('password') 
    user = authenticate(username=username, password=password) 
    if user is not None: 
     if user.is_active: 
     login(request, user) 
     # success 
     return render(request,'registration/login.html') 
     else: 
     # user was not active 
     return redirect('registration/') 
    else: 
     # not a valid user 
     return redirect('registration/') 
    else: 
     # URL was accessed directly 
     return redirect('registration/') 

Answer 2

样品AUTH

view.py

def loginto(request): 
    if request.method == "POST": 
     username = request.POST['username'] 
     password = request.POST['password'] 
     user = authenticate(username=username, password=password) 
     if user is not None: 
     if user.is_active: 
      login(request, user) 
      return render_to_response('index1.html') 
     else: 
      return render_to_response('error1.html') 
     else: 
     return render_to_response('error2.html') 
    else: 
     return render_to_response('error2.html') 

url.py

url(r'^login', 'mytests.views.loginto', name='loginto'), 

的login.html

<form method="POST" action="{% url loginto %}"> 
    Username: <input type="text" name="username" size="15" /><br /> 
    Password: <input type="password" name="password" size="15" /><br /> 
    <div align="center"> 
    <p><input type="submit" value="Login" /></p> 
    </div> 
</form>