How do you use Django URL namespaces?

Question

I\'m trying to get the hang of Django URL namespaces. But I can\'t find any examples or documentation.

Here is what I have tried.

urls.py:

from d         


        

Answer 1

Here is one solution I came up with.

views.py:

from django.shortcuts import render_to_response
from django.template import RequestContext

def render_response_context(view, locals):
    request = locals["request"]
    app = "bar" if request.META["PATH_INFO"].lower().startswith("/bar") else "foo"
    return render_to_response(view, locals, 
        context_instance=RequestContext(request, current_app=app))

def view1(request, view_id):    
    return render_response_context('view1.html', locals())

view1.html:

{% load extras %}
{% namespace_url view1 3 %}

extras.py:

from django import template
from django.core.urlresolvers import reverse

register = template.Library()

@register.tag
def namespace_url(parser, token):
    tag_name, view_string, arg1 = token.split_contents()
    return NamespaceUrlNode(view_string, arg1)

class NamespaceUrlNode(template.Node):
    def __init__(self, view_string, arg1):
        self.view_string = view_string
        self.arg1 = arg1
    def render(self, context):
        return reverse("%s:%s" % (context.current_app, self.view_string), args=[self.arg1])

Basically I made sure to always pass the current_app context as either "foo" or "bar", which I calculate manually by looking at the request URL. Then I use a custom tag that resolves a URL based on current_app.

It's not very generic; "foo" and "bar" are hard-coded, and the tag can only take exactly one argument. Even with those issues fixed, this seems like a hack.