Django urls.py Regex Not Working Like I Expected

Question

I want to have a URL like these --

/chart/2012
/chart/2009
/chart/1996

...each #, is a year. So I added this line into my app's urls.py --

url(r'^chart/(?P<year>\d+)$',views.chart,name="chart"),

but it turns in a 404 when I go to the URL's. Shouldn't the \d+ capture the digits into the year variable?

(and yes, I do have a chart function defined in my views.py & it works when I don't try to use a variable with it)

UPDATE:

Here's the full urls.py --

from django.conf.urls import patterns,url
from musichart import views

urlpatterns = patterns('',
    url(r'^$', views.index, name="index"),
    url(r'^chart/(?P<year>\d+)$',views.chart,name="chart"),
)

Here's my views.py --

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponseRedirect, HttpResponse
from django.template import RequestContext, loader #Context
from musichart.models import Station,Song,Album,Related,Artist


def index(request):
    template = loader.get_template('chart/index.htm')
    context = RequestContext(request, {
        'title': "Here is the title",
        'testvar': "blah blah blah testing 1 2 3",
        'numero': 17,
    })
    return HttpResponse(template.render(context))


def chart(request, year):
    template = loader.get_template('chart/chart.htm')
    context = RequestContext(request, {
        'title': "Here is the title",
        'testvar': "blah blah blah testing 1 2 3",
        'numero': 17,
    })
    return HttpResponse(template.render(context))

As you can see, it's bare bones at the moment and just sort of testing to make sure things go through before I go any further. And the 404 page says --

Using the URLconf defined in msite.urls, Django tried these URL patterns, in this order:
^admin/
^accounts/
^chart/ ^$ [name='index']
^chart/ ^chart/(?P<year>\d+)$ [name='chart']
^health/
The current URL, chart/2010, didn't match any of these.

Even if it didn't, he wouldn't get a 404 error, as a 404 indicates a mismatch of the URL. — Mike Pelley
– Mike Pelley, Commented May 29, 2013 at 19:54
The 404 gives a list of urls that could be matched along with the actual URL. Could you post the actual URL as reported by the 404 page? — Mike Pelley
– Mike Pelley, Commented May 29, 2013 at 19:56

technivore · Accepted Answer · 2013-05-29 20:54:37Z

1

My guess is you're including the "chart" URI component already in the project-level (IE, root) urlconf, so including it again the app's urlconf is throwing off the resolver. Basically try removing the "chart/" from the chart url, like so:

from django.conf.urls import patterns,url
from musichart import views

urlpatterns = patterns('',
    url(r'^$', views.index, name="index"),
    url(r'^(?P<year>\d+)$',views.chart,name="chart"),
)

And in addition, double check that you don't have a trailing space after "chart" when including the app-level urlconf from the root urlconf.

answered May 29, 2013 at 20:54

technivore

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1 Comment

Zamphatta Over a year ago

Oh my goodness, I can't believe that I didn't catch that. I was so caught up in thinking it must've been a regex mistake 'cause I've never really done that before, that I totally missed the real issue. Thanks!!

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