def change_lang(request):
"""
Change current documentation language.
"""
lang = request.GET.get('lang_code', 'en')
# By default, intend to redirect to the home page.
response = redirect('/')
# Needs to set the preferred language first in case the following code reads lang from portal_helper.
portal_helper.set_preferred_language(request, response, lang)
# Use the page the user was on, right before attempting to change the language.
# If there is a known page the user was on, attempt to redirect to it's root contents.
from_path = urllib.unquote(request.GET.get('path', None))
if from_path:
# Get which content the user was reading.
content_id = request.GET.get('content_id')
if content_id:
# Get the proper version.
docs_version = portal_helper.get_preferred_version(request)
# Grabbing root_navigation to check if the current lang supports this book
# It also makes sure that all_links_cache is ready.
root_navigation = sitemap_helper.get_sitemap(docs_version, lang)
if content_id in root_navigation:
all_links_cache = cache.get(
sitemap_helper.get_all_links_cache_key(docs_version, lang),
None)
key = url_helper.link_cache_key(from_path)
if all_links_cache and key in all_links_cache:
response = redirect(all_links_cache[key])
else:
# There is no translated path. Use the first link in the contents instead
response = _redirect_first_link_in_contents(
request, docs_version, content_id)
# If the user happens to be coming from the blog.
elif from_path.startswith('/blog'):
# Blog doesn't a content_id and translated version. Simply redirect back to the original path.
response = redirect(from_path)
portal_helper.set_preferred_language(request, response, lang)
return response
def _transform_urls(version, sitemap, node, all_links_cache, language):
all_node_links = []
if sitemap and node:
if 'link' in node and language in node['link']:
transformed_path = node['link'][language]
if not transformed_path.startswith('http'):
# We only append the document root/version if this is not an absolute URL
path_with_prefix = url_helper.append_prefix_to_path(
version, transformed_path)
if path_with_prefix:
transformed_path = path_with_prefix
if transformed_path:
node['link'][language] = transformed_path
all_node_links.append(transformed_path)
if all_links_cache != None:
key = url_helper.link_cache_key(transformed_path)
all_links_cache[key] = transformed_path
if 'sections' in node:
for child_node in node['sections']:
child_node_links = _transform_urls(version, sitemap,
child_node, all_links_cache,
language)
all_node_links.extend(child_node_links)
node['links'] = all_node_links
if ('link' not in node or not node['link'][language]):
# After we process the node's children, we check if the node has a default link.
# If not, then we set the node's first link
if len(all_node_links) > 0:
node['link'] = {language: all_node_links[0]}
return all_node_links