Django templates: Get current URL in another language

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I’m not using language prefixes, but translated urls instead. However, this template tag should also help you:

# This Python file uses the following encoding: utf-8

from django import template
from django.core.urlresolvers import reverse # from django.urls for Django >= 2.0
from django.core.urlresolvers import resolve # from django.urls for Django >= 2.0
from django.utils import translation

register = template.Library()

class TranslatedURL(template.Node):
    def __init__(self, language):
        self.language = language
    def render(self, context):
        view = resolve(context['request'].path)
        request_language = translation.get_language()
        translation.activate(self.language)
        url = reverse(view.url_name, args=view.args, kwargs=view.kwargs)
        translation.activate(request_language)
        return url

@register.tag(name="translate_url")
def do_translate_url(parser, token):
    language = token.split_contents()[1]
    return TranslatedURL(language)

It returns the current url in the desired language. Use it like this: {% translate_url de %}

Comments and suggestions for improvements are welcome.

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