问题
this is my view.py
from django.http import HttpResponse
import datetime
def current_datetime(request):
now = datetime.datetime.now()
html = "<html><body>It is now %s.</body></html>" % now
return HttpResponse(html)
def hours_ahead(request, offset):
offset = int(offset)
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)
this is my urls.py
from django.conf.urls import patterns, url, include
from mysite.view import current_datetime, hours_ahead
urlpatterns = patterns('',
# Examples:
# url(r'^$', 'mysite.views.home', name='home'),
# url(r'^blog/', include('blog.urls')),
# url(r'^admin/', include(admin.site.urls)),
(r'^time/$', current_datetime),
#(r'^time/plus/\d{1,2}/$', hours_ahead),
url(r'$', 'mysite.view.hours_ahead', name='hours_ahead'),
)
when i try to go to this localhost:8000/time/plus/24/ I have the error hours_ahead() takes exactly 2 arguments (1 given)
回答1:
You need to capture the offset from the url:
url(r'^time/plus/(\d+)/$', 'mysite.view.hours_ahead', name='hours_ahead'),
where (\d+) is a capturing group that would capture one or more digits. In case of localhost:8000/time/plus/24/ it would capture 24.
回答2:
offset is missing here:
url(r'$', 'mysite.view.hours_ahead', name='hours_ahead'),
来源：https://stackoverflow.com/questions/26113260/django-1-7-some-name-takes-exactly-2-arguments-1-given