Django教程：完成第一页后出现无法解释的404错误 [英] Django Tutorial: unexplained 404 error after completing first page

问题描述

我完成了 https://docs.djangoproject.com/en/1.9/intro / tutorial01 /

预期的行为有效。我的民意测验索引正在显示。但是有一个我不明白的意外结果。当我转到 localhost：8000 时，找不到页面。为什么？

The intended behaviour works. My polls index is showing. But there is one unintended consequence that I don't understand. When I go to localhost:8000 I get a page not found. Why?

这是我的 mysite / mysite / urls.py ，如本教程所述。

This is my mysite/mysite/urls.py as the tutorial explained.

from django.conf.urls import include, url
from django.contrib import admin

urlpatterns = [
    url(r'^polls/', include('polls.urls')),
    url(r'^admin/', admin.site.urls),
]

服务器说：

Not Found: /
[11/Feb/2016 04:25:46] "GET / HTTP/1.1" 404 2010

当我删除投票行时，404消失了。即：

When I delete the polls line, the 404 disappears. I.e.:

from django.conf.urls import include, url
from django.contrib import admin

urlpatterns = [
    url(r'^admin/', admin.site.urls),
]

现在服务器说：

Not Found: /
[11/Feb/2016 04:24:23] "GET / HTTP/1.1" 200 1767

所以我猜想这是一些默认的怪癖，但我仍然不完全知道自己是在犯错误还是行为已定义。我的其他代码与本教程的代码段相同。

So I guess it is some default quirk but I still don't fully know if I am making a mistake or if this is defined behaviour. My other code is the same as in the code snippets of the tutorial.

推荐答案

本教程没有定义当您转到您的网站根目录，它仅处理民意调查应用。如果要在浏览到 http：// localhost：8080 / 时看到一些内容，则必须添加url映射。

The tutorial does not define what will happen when you go to your site root, it only deals with the polls app. You have to add a url mapping if you want to see something when you browse to http://localhost:8080/.

作为一个简单示例，请尝试在您的 mysite / urls.py 中进行以下更改：

As a simple example, try making the following changes in your mysite/urls.py:

from polls import views

urlpatterns = [
    url(r'^$', views.index, name='site_index'),
    ...
]

从现在，当您浏览到站点根目录时，应该会看到民意调查应用程序的索引视图。

From now on you should see the index view of polls app when you browse to your site root.

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