> If i have a URL such as:
>
> (r'^(?P<username>\w+)/blog/', include('foo.urls.blog')),
>
> what are the whats the purpose of the w and the +? i'm having some
> problems with 2 of my urls and i think it may have something to do
> with this.
You'll want to read up on regular expressions. There are a
number of good tutorials and books on the subject. In short, in
this case the "\w" is "any 'word' character" (usually
[a-zA-Z0-9_] and if the regexp is compiled with unicode support,
I believe it supports unicode "letter/digit" type characters).
Note that this *doesn't* include things like the minus sign, the
"@", and a variety of other characters you might wish to include
in a username.
The "+" is the "one-or-more of the previous atom [the '\w']"
repetition operator. So your regexp is "one or more 'word'
characters, followed by a slash, followed by the literal 'blog',
followed by another slash".
Regexps are very powerful, though the regexp-reversing code in
Django doesn't gracefully handle some of the more complex cases
because it's a non-trivial problem.
-tkc
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