def set_lang(request):
"""Set current language
"""
lang = request.matchdict['lang'].lower()
langs = dict(request.registry.settings['available_langs'])
if lang not in langs:
raise HTTPBadRequest('Not supported language %r' % lang)
referrer = request.referer
my_url = request.route_url('front.set_lang', lang=lang)
if referrer == my_url or not referrer:
# never use the set_lang itself as came_from
# which could lead to a infinite loop
referrer = '/'
came_from = request.params.get('came_from', referrer)
response = HTTPFound(location=came_from)
response.set_cookie('_LOCALE_', normalize_locale_name(lang))
return response
