带有关键字参数uidb64和Django 2.0的NoReverseMatch

Question

我无法理解为什么我的代码不起作用.在它运行之前,但现在,当我运行服务器并进行测试时,代码不起作用.

当用户注册时,我发送激活邮件,如下所示:

def send_activation_email(serializer, request, user):
    current_site = get_current_site(request)
    message = render_to_string('acc_active_email.html', {
        'user': user,
        'domain': current_site.domain,
        'uid': urlsafe_base64_encode(force_bytes(user.pk)),
        'token': account_activation_token.make_token(user),
    })
    mail_subject = 'Activate your blog account.'
    to_email = serializer.data['email']

    email = EmailMessage(mail_subject, message, to=[to_email])
    email.send()

acc_active_email.html

{% autoescape off %}
Hi {{ user.username }},
Please click on the link to confirm your registration,

http://{{ domain }}{% url 'activate' uidb64=uid token=token %}
{% endautoescape %}

和我的网址文件

.
.
    url(r'^activate/(?P<uidb64>[0-9A-Za-z_\-]+)/(?P<token>[0-9A-Za-z]{1,13}-[0-9A-Za-z]{1,20})/$',
        views.activate_account, name='activate'),
.
.

但我有这个错误:

Exception Type:     NoReverseMatch
Exception Value:    

Reverse for 'activate' with keyword arguments '{'uidb64': b'NDM', 'token': '4qz-8f770502bd8b02786da9'}' not found. 1 pattern(s) tried: ['activate/(?P<uidb64>[0-9A-Za-z_\\-]+)/(?P<token>[0-9A-Za-z]{1,13}-[0-9A-Za-z]{1,20})/$']

突出这一行 http://{{ domain }}{% url 'activate' uidb64=uid token=token %}

Answer 1

在Django 2.0中,您应该decode()在base64编码后调用uid,将其转换为字符串:

message = render_to_string('acc_active_email.html', {
    'user': user,
    'domain': current_site.domain,
    'uid': urlsafe_base64_encode(force_bytes(user.pk)).decode(),
    'token': account_activation_token.make_token(user),
})

有关详细信息,请参阅Django 2.0发行说明中的​​注释.

Answer 2

对于较新版本的 Django，您可以使用 slug 语法。例如：

path(
    'activate/<slug:uidb64>/<slug:token>/',
    views.activate_account, 
    name='activate'
)