Django Reverse的使用

reverse()¶

If you need to use something similar to the url template tag inyour code, Django provides the following function:

reverse(viewname,urlconf=None, args=None, kwargs=None, current_app=None)[source]¶

viewname can be aURL pattern name or thecallable view object. For example, given the followingurl:

from news import viewsurl(r'^archive/$', views.archive, name='news-archive')

you can use any of the following to reverse the URL:

# using the named URLreverse('news-archive')# passing a callable object# (This is discouraged because you can't reverse namespaced views this way.)from news import viewsreverse(views.archive)

If the URL accepts arguments, you may pass them in args. For example:

from django.urls import reversedef myview(request):    return HttpResponseRedirect(reverse('arch-summary', args=[1945]))

You can also pass kwargs instead ofargs. For example:

>>> reverse('admin:app_list', kwargs={'app_label': 'auth'})'/admin/auth/'

args and kwargs cannot be passed to reverse() at the same time.

If no match can be made, reverse() raises aNoReverseMatch exception.

The reverse() function can reverse a large variety of regular expressionpatterns for URLs, but not every possible one. The main restriction at themoment is that the pattern cannot contain alternative choices using thevertical bar ("|") character. You can quite happily use such patterns formatching against incoming URLs and sending them off to views, but you cannotreverse such patterns.

The current_app argument allows you to provide a hint to the resolverindicating the application to which the currently executing view belongs.Thiscurrent_app argument is used as a hint to resolve applicationnamespaces into URLs on specific application instances, according to thenamespaced URL resolution strategy.

The urlconf argument is the URLconf module containing the URL patterns touse for reversing. By default, the root URLconf for the current thread is used.

更多关于Reverse的说明，参见django.urls utility functions：https://docs.djangoproject.com/en/1.10/ref/urlresolvers/