fnpdjango/templatetags/fnp_lang.py

   1 from django.conf import settings
   2
   3 try:
   4     from django.urls import resolve, reverse, Resolver404
   5 except ImportError:
   6     from django.core.urlresolvers import resolve, reverse, Resolver404
   7
   8 from django import template
   9 from django.utils import translation
  10 from ..utils.views import get_current_object
  11
  12 register = template.Library()
  13
  14
  15 @register.inclusion_tag('fnpdjango/lang_switcher.html', takes_context=True)
  16 def lang_switcher(context):
  17     """Context-aware language switcher.
  18
  19     Use ..utils.views.set_current_object to provide the context.
  20     """
  21     request = context['request']
  22     obj = get_current_object(request)
  23     languages = settings.LANGUAGES
  24     if hasattr(obj, 'get_available_languages'):
  25         available_languages = set(obj.get_available_languages())
  26         languages = [lang for lang in languages if lang[0] in available_languages]
  27     return {
  28         'request': request,
  29         'languages': languages,
  30     }
  31
  32
  33 @register.filter
  34 def get_here_url(request, lang):
  35     obj = get_current_object(request, for_url=True)
  36     if hasattr(obj, 'get_absolute_url'):
  37         with translation.override(lang):
  38             url = obj.get_absolute_url()
  39     else:
  40         try:
  41             match = resolve(request.get_full_path())
  42         except Resolver404:
  43             match = resolve('/')
  44         view = match.func
  45         if view is None:
  46             view = match.url_name
  47         if lang is None:
  48             lang = translation.get_language()
  49         with translation.override(lang):
  50             url = reverse(view, args=match.args, kwargs=match.kwargs)
  51     return url
  52
  53