Question

我正在构建我的第一个使用用户身份验证的django应用程序，我正在使用它我在网上找到的一些例子可供参考。我的示例使用方法'direct_to_template' 问题是，当我使用它时，我得到一个空白的屏幕。我知道的模板位于我的模板目录中。

为什么我在登录时出现空白屏幕？我该如何解决这个问题？

我正在使用的例子：

示例＃1：https://docs.djangoproject.com/en/dev/topics/auth/ 示例＃2： http://www.nerdydork.com/django-login-form-on-every-page.html

我的代码如下：

------------- ------------- base.html文件

Here is the trigger it's in the header bar.
<li><a href="/login">Log-In</a></li>

--------- views.py -----------------------

from django.template import Context, loader
from django.conf.urls import patterns, url, include
from django.views.generic.simple import direct_to_template
from django.http import HttpResponse

VER = "1a"  # Global I like to print; making sure my latest code is running.

def mylogin(request):
    print "mylogin called [%s] " % VER
    if request.method == 'POST':
    user = authenticate(username=request.POST['username'],
    password=request.POST['password'])
    if user is not None:
        if user.is_active:
            login(request, user)
            # success
            return HttpResponseRedirect('/')
        else:
            # disabled account
            return direct_to_template(request, 'inactive_account.html')
    else:
        # invalid login
        return direct_to_template(request, 'invalid_login.html')

# User just clicked login
#  *** I know this is getting called and I get a blank screen here ***
print "calling: direct_to_template('login.html')"
return direct_to_template(request, 'login.html')

def mylogout(request):
    print "mylogout called"
    logout(request)
    return direct_to_template(request, 'logged_out.html')

--------- urls.py -----------------------

from django.conf.urls import patterns, include, url
from django.views.generic.simple import direct_to_template
from django.contrib import admin

admin.autodiscover()

urlpatterns = patterns('',
    (r'^customers/$', 'jim.views.index'),
    (r'^customers/(?P<customer_id>\d+)/$', 'jim.views.detail'),
    (r'^media/(?P<path>.*)$', 'django.views.static.serve', {'document_root': '/media'}),
    (r'^static/(?P<path>.*)$', 'django.views.static.serve', {'document_root': '/static'}),
    (r'^login/$', 'jim.views.mylogin'),
    (r'^logout/$', 'jim.views.mylogout'),
    (r'^site_media/(?P<path>.*)$', 'django.views.static.serve', {'document_root': '/media'}),
    url(r'^admin/doc/', include('django.contrib.admindocs.urls')),
    url(r'^admin/', include(admin.site.urls)),
)

urlpatterns += patterns('django.views.generic.simple', (r'^accounts/login/$', 'direct_to_template', {'template': 'login_required.html'}),
)

--------- templates / login.html -----------------------

{% if user.is_authenticated %}
    <!-- Authenticate account menu -->
{% else %}
    <h3>Login</h3>
    <form action="/login/" method="post" accept-charset="utf-8">
    <label for="username">Username</label><input type="text" name="username" value="" id="username" />
    <label for="password">Password</label><input type="password" name="password" value="" id="password" />
    <p><input type="submit" value="Login"></p>
    </form>
    {% endif %}

Answer 1

如果你的模板是这样的话，那就错误了

{% if user.is_authenticated %}
    <!-- Authenticate account menu -->
{% else %}
    stuff
{% endif %}

您的模板空白似乎很合乎逻辑 - _ -

更多.. 200不是HTTP错误，它意味着200 OK：成功HTTP请求的标准响应。

Answer 2

我已经为您提出了一条评论，要求您提供更多详情。但是如果没有这些细节，我猜测你需要一个视图来显示你的“login.html”模板。

您可以为此编写一个单独的视图并将其放在urls.py中。您可以在urls.py中使用通用的direct_to_template视图。或者您可以修改当前的“mylogin”视图，例如：

def mylogin(request):
    print "mylogin called [%s] " % VER
    if request.method == 'POST':
        user = authenticate(username=request.POST['username'],
        password=request.POST['password'])
        if user is not None:
            if user.is_active:
                login(request, user)
                # success
                return HttpResponseRedirect('/')
            else:
                # disabled account
                return direct_to_template(request, 'inactive_account.html')
    else:
        # display login form
        return direct_to_template(request, 'login.html')

区别在于压力和最后一行（没有POST数据，意味着它是显示登录表单的GET请求）。但正如我所说，有几种方法可以处理它，我的只是一个建议，我不会做任何你的设计决定:)）

Django身份验证：获取空白屏幕

2 个答案: