{％url％}给了我NoReverseMatch错误，而reverse（）返回的url很好。为什么？ [英] {% url %} gives me NoReverseMatch error while reverse() returns the url just fine. Why?

问题描述

我不知道这个这个问题与我即将描述的同样的问题，但它确实有同样的症状。不幸的是，在写我的时候，它仍然没有得到解决。

I don't know if this SO question is of the same problem that I am about to describe, but it does share the same symptoms. Unfortunately, it still remains unresolved as I am writing.

所以这里是我的问题。我正在尝试将James Bennett的 django-registration app 添加到我的django项目中。我几乎完成了配置我的需要 - 自定义模板和网址。就在我以为一切都很好的时候我使用 {％url'testing'item_id = 123％} 中的 NoReverseMatch （我也尝试使用视图在django注册所需的自定义模板之一中，名称 myapp.views.test 而不是运气）。有趣的是，我在shell中尝试了 reverse（'testing'，kwargs = {'item_id'：123}），并且返回的url很好。我认为在后端， {％url％} 使用 reverse（），但为什么会得到不同的结果？

So here is my problem. I am trying to add James Bennett's django-registration app to my django project. I have pretty much finished configuring it to my needs - custom templates and urls. Just when I thought everything was good to go. I got NoReverseMatch error from using {% url 'testing' item_id=123 %} (I also tried using the view name, myapp.views.test, instead but no luck) in one of the custom templates required by django-registration. Interestingly, I tried reverse('testing', kwargs={'item_id':123}) in the shell and the url was returned just fine. I thought {% url %} uses reverse() in the back-end but why did I get different outcomes?

urls.py：（我网站的URLconf）

urls.py: (the URLconf of my site)

urlpatterns = patterns('myapp.views',
    url(r'^test/(?P<item_id>\d+)/$', 'test', name='testing'),
)

activate_email.txt：说明模板，请注意，django注册要求的是 .txt 扩展名，这不应该是问题的原因。）

activation_email.txt: (the said template. Note it's intentionally in .txt extension as required by django-registration and that shouldn't be the cause of the problem.)

{% comment %}Used to generate the body of the activation email.{% endcomment %}
Welcome to {{ site }}! Please activate your account by clicking on the following link:

{% url 'testing' item_id=123 %}

Note the activation link/code will be expired in {{ expiration_days }} days.

我不知道是否重要，但只是想我应该提到 activation_email.txt 存储在 myapp 的模板目录中，尽管它由 django-registration 。

I don't know if it matters but just thought I should mention activation_email.txt is stored in the templates directory of myapp though it is used by django-registration.

此外，我使用django 1.4

Also, I am using django 1.4

我有一种感觉，这个问题与url命名空间，一个我从来没有理解的主题，但这只是一个天真的猜测。 （IMO，django文档很好地解释了关于django的所有内容，除了涉及url的命名空间）

I have a feeling that the problem has something to do with the url namespaces, a topic that I have never understood, but it's just a naive guess. (IMO, the django documentation is great in explaining everything about django, except when it comes to url namespaces)

推荐答案

在这里没有专家，但是在目前我正在使用的Django项目中，我使用没有引号的url的名称。我刚刚在我的一个模板中添加了一个类似行的引号，并产生与错误相同的错误。

I'm no expert here, but in a Django project I'm working on at the moment I use the name of the url without quotes. I just added quotes around a similar line in one of my templates and it produced the same error as your error.

尝试：

{% url testing item_id=123 %}

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