Django URL 映射？

Question

django 和 python 新手。尝试启动并运行一些示例日历代码，但在 URL 映射方面遇到问题。当我尝试运行管理页面（或任何页面）时，我得到：

ViewDoesNotExist at /

Tried main in module cal. Error was: 'module' object has no attribute 'main'

Request Method:     GET
Request URL:    http://127.0.0.1:8000/
Django Version:     1.3.1
Exception Type:     ViewDoesNotExist

这是我的网址模式：

(r"^(\d+)/$", "main"),
(r"", "main"),
url(r'^admin/doc/', include('django.contrib.admindocs.urls')),
url(r'^admin/', include(admin.site.urls)),

不过我很困惑，因为在我看来，函数“main”确实存在于views.py中，如下所示。非常感谢任何帮助：

import time
from django.contrib.auth.decorators import login_required
from django.http import HttpResponseRedirect, HttpResponse
from django.shortcuts import get_object_or_404, render_to_response

from dbe.cal.models import *

mnames = "January February March April May June July August September October November December"
mnames = mnames.split()


@login_required
def main(request, year=None):
"""Main listing, years and months; three years per page."""
# prev / next years
if year: year = int(year)
else:    year = time.localtime()[0]

nowy, nowm = time.localtime()[:2]
lst = []

# create a list of months for each year, indicating ones that contain entries and current
for y in [year, year+1, year+2]:
    mlst = []
    for n, month in enumerate(mnames):
        entry = current = False   # are there entry(s) for this month; current month?
        entries = Entry.objects.filter(date__year=y, date__month=n+1)

        if entries:
            entry = True
        if y == nowy and n+1 == nowm:
            current = True
        mlst.append(dict(n=n+1, name=month, entry=entry, current=current))
    lst.append((y, mlst))

return render_to_response("cal/main.html", dict(years=lst, user=request.user, year=year,
                                               reminders=reminders(request)))

Answer 1

错误消息告诉您 main 函数不存在于 cal 模块中 - 这是正确的，它存在于 cal.views 中> 模块。

如果您将 url 模式更改为以下内容，它应该可以工作：

(r"^(\d+)/$", "cal.views.main"),
# (r"", "cal.views.main"),

我已注释掉上面的 r"" url，因为它是一个包罗万象的 url。它出现在登录 URL 模式上方，因此您的 main 视图正在处理日志 URL /accounts/login/。 main 视图使用 login_required 装饰器，导致重定向循环。

Answer 2

阿拉斯代尔的回答是正确的。
我只想添加以下内容： https://docs .djangoproject.com/en/1.3/intro/tutorial03/#simplifying-the-urlconfs

您可以这样声明它以方便:)：

urlpatterns = patterns('cal.views',
                       (r'^(\d+)/
, 'main'),
                       (r'', 'main'),
)