Is there a way to add context to Django reverse function?-CodePudding

Is it possible to pass context through the reverse function in Django in some way like reverse('foo', context={'bar':'baz'})? Or is there a better workaround?

CodePudding user response：

As already described by Sir WillemVanOnsem in the above comment.

You can't provide context in reverse as it only produces a string: a path, eventually it goes to view.

reverse() can only take args and kwargs, see Reversing namespaced URLs for more detail.

CodePudding user response：

Reverse generates an URL. The URL can parse or supply extra context. In urls.py,

path( 'action/<str:context>/', MyView.as_view(), name='foo' )

then

reverse('app:foo', kwargs={'context':'bar:baz quux:help'} )

will generate the URL ending

.../appname/action/bar:baz quux:help

and your view will parse context:

context = self.kwargs.get( context, '')
context_dir = {}
for kv in context.split(' '):
   keyval = kv.split(':')
   context_dir[ keyval[0].strip() ] = keyval[1].strip()

or something like this, ending with context_dir as {'bar':'baz', 'quux':'help'}

Alternatively you can append a querystring to the URL returned by reverse and retrieve that in the view you redirect to via request.GET

url = reverse('foo')   '?bar=baz&quux=help'

redirect, and then in that view request.GET.get('bar') will return "baz" etc.

Finally you can stuff an almost arbitrarily complex context into the user's session (which gets stored either as a cookie in his browser, or an object in your database). This is the most general but also the most complex. See the doc for using Django sessions