On Mon, 2006-06-05 at 19:26 -0700, John M wrote: > Ok, so im gong through the turtorial and trying to adopt it to my own > project, and I see this in urlpatterns: > > (r`^polls/$'....), > (r'^polls/(\d+)/$'....) > > how does that differ from > > (r'^polls/'....), > (r'^polls/(\d+)/$'....) > > Note the $ is missing from the first line of the second example. > > When you don't have a $ in the polls/ setup, it doesn't scan down to > the other entries. > > Since I'm so new to python and web stuff, was wondering if anyone could > explain this. > > Sorry for such a noob question.
This is standard regular-expression syntax for "matches end of string". See http://docs.python.org/lib/re-syntax.html for all the gruesome details. The strings you are experimenting with here are compiled as Python regular expressions, so you have the full freedom (and power) of that module to do as you wish. The *reason* you want to use '$' in some patterns is so that you can differentiate between URLs like /polls/1234/foo/bar and /polls/1234/ The first one will not match '^polls/(\d+)/$', since it does not end immediately after the second slash. So you can use the '$' to weed out any URLs with trailing garbage. Similarly, the reg-exp '^polls/$' is used to match (only) the URL '/polls/' so that we can handle that specially -- such as by going to the latest poll, whereas '^polls/' (without the '$') would also match '/polls/1234/', which may not be what you want. Cheers, Malcolm --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users -~----------~----~----~----~------~----~------~--~---
