反向{％url％}：反向为“”未找到。 ''不是有效的视图函数或模式名称 [英] Reverse {% url %}: Reverse for '"' not found. '' is not a valid view function or pattern name

问题描述

我已经坚持了一段时间，似乎无法解决该错误。我不在视图的任何地方使用 reverse（）。

I've been stuck on this for a while, can't seem to fix the error. I do not use reverse() anywhere in the view.

urls.py

urlpatterns = [
    url(r"^book/", include("bookings.urls")),
]

bookings.urls.py

from django.conf.urls import url
from . import views

app_name = 'bookings'

urlpatterns = [
    url(r'^charge/$', views.charge, name='charge'),
    url(r'^booking/$', views.booking, name='booking'),
]

views.py

def booking(request):
     # some code
     render(request, 'bookings/template.html', {'listing': listing,})
def charge(request):
    # some code

template.html

<form action="{% url 'bookings:charge' %}" method="post">

我尝试了所有不同的更改和名称空间，例如尝试仅使用 charge ，urls.py中的其他命名空间等。

I tried all different alterations and namespaces, e.g. trying to use just charge, different namespaces in urls.py etc.

当我渲染 book / booking / ，出现以下错误：

When I render the book/booking/, I get the following error:

未找到费用的相反内容。 'charge'不是有效的视图函数
或模式名称。

Reverse for 'charge' not found. 'charge' is not a valid view function or pattern name.

推荐答案

如果要以这种方式使用URL标记，则需要在urls.py中添加命名空间。

If you want to use URL tag on that way, you need a namespace in your urls.py.

url(r"^book/", include("bookings.urls", namespace="bookings")),

然后，您的模板中可以包含 {％url'bookings：charge'％} 。

Then you can have {% url 'bookings:charge' %} in your template.

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