Django URL syntax error

Question

I am creating a wiki app. And when I create url for my app in urls.py I get syntax error message. I am not good at regular expressions.

Here is my code,

(r'wikicamp/(?<page_name>[^/]+)/edit/$', 'wikicamp.wiki.views.edit_page'),
(r'wikicamp/(?<page_name>[^/]+)/save/$', 'wikicamp.wiki.views.save_page'),
(r'wikicamp/(?<page_name>[^/]+)/$', 'wikicamp.wiki.views.view_page'),

And my error is,

error at /
syntax error
Request Method: GET
Request URL:    http://127.0.0.1:8000/
Django Version: 1.2.5
Exception Type: error
Exception Value:    
syntax error
Exception Location: /usr/lib/python2.6/re.py in _compile, line 245
Python Executable:  /usr/bin/python
Python Version: 2.6.6
Python Path:    ['/home/ztron/wikicamp', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', '/usr/lib/python2.6/lib-dynload', '/usr/local/lib/python2.6/dist-packages', '/usr/lib/python2.6/dist-packages', '/usr/lib/python2.6/dist-packages/PIL', '/usr/lib/python2.6/dist-packages/gst-0.10', '/usr/lib/pymodules/python2.6', '/usr/lib/python2.6/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.6/gtk-2.0']
Server time:    Wed, 13 Apr 2011 15:21:18 -0500

Is there anything wrong in the regular expression? I did read django documentation but still have no idea.

Thanks!

ridgerunner · Accepted Answer · 2011-04-13 20:28:23Z

4

Your named capture groups are missing the 'P'. Do it like so:

(r'wikicamp/(?P<page_name>[^/]+)/edit/$', 'wikicamp.wiki.views.edit_page'),
(r'wikicamp/(?P<page_name>[^/]+)/save/$', 'wikicamp.wiki.views.save_page'),
(r'wikicamp/(?P<page_name>[^/]+)/$', 'wikicamp.wiki.views.view_page'),

answered Apr 13, 2011 at 20:28

ridgerunner

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2 Comments

Soviut Over a year ago

The P is a python specific bit of syntax that indicates that this is "python named group", as I recall.

ridgerunner Over a year ago

@Soviut: You can use this syntax with PHP as well (and any other tool which uses the excellent PCRE library).

armonge · Accepted Answer · 2011-04-13 20:30:34Z

0

According to http://docs.python.org/library/re.html the syntax for named groups is

(?P<name>...)

That means you should have

(r'wikicamp/(?P<page_name>[^/]+)/edit/$', 'wikicamp.wiki.views.edit_page'),

answered Apr 13, 2011 at 20:30

armonge

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