I am brand new to Django, so bare with me.
I am a little confused with this example shown in the Django book:
Here is my urls.py:
from django.conf.urls.defaults import *from mysite.views import hello,
current_datetime, hours_ahead
urlpatterns = patterns('',
url(r'^hello/$', hello),
url(r'^time/$', current_datetime),
url(r'^time/plus/(\d{1,2})/$', hours_ahead),)
And here is my View function associated with hours_ahead
from django.http import Http404, HttpResponseimport datetime
def hours_ahead(request, offset):
try:
offset = int(offset)
except ValueError:
raise Http404()
dt = datetime.datetime.now() + datetime.timedelta(hours=offset)
html = "<html><body>In %s hour(s), it will be %s.</body></html>" % (offset,
dt)
return HttpResponse(html)
Now what is throwing me off is how 'offset' is a second argument to the
hours_ahead function. Yet I am not quite sure how it being the second
argument makes it the case that it is associated with whatever is entered
as a URL. Let me use an example to illustrate my confusion.
Say I request the URL: http://127.0.0.1:8000/time/plus/2/ . Why is it the
case that offset is '2'? I am not seeing why '2' is plucked out? What
happened with 'time' and 'plus'? How does python/django know that the '2'
is referring to offset?
Thanks for any help in advance.
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