fix broken url on language toggle

ckan/lib/helpers.py

@@ -357,6 +357,9 @@ def full_current_url():
     for sharing etc '''
     return (url_for(request.environ['CKAN_CURRENT_URL'], qualified=True))
 
+def current_url():
+    ''' Returns current url unquoted'''
+    return urllib.unquote(request.environ['CKAN_CURRENT_URL'])
 
 def lang():
     ''' Return the language code for the current locale eg `en` '''
@@ -2224,6 +2227,7 @@ def get_translated(data_dict, field):
     'debug_inspect',
     'dict_list_reduce',
     'full_current_url',
+    'current_url',
     'popular',
     'debug_full_info_as_list',
     'get_facet_title',

ckan/templates/snippets/language_selector.html

@@ -1,10 +1,9 @@
-{% set current_url = request.environ.CKAN_CURRENT_URL %}
 {% set current_lang = request.environ.CKAN_LANG %}
 <form class="form-inline form-select lang-select" action="{% url_for controller='util', action='redirect' %}" data-module="select-switch" method="POST">
   <label for="field-lang-select">{{ _('Language') }}</label>
   <select id="field-lang-select" name="url" data-module="autocomplete" data-module-dropdown-class="lang-dropdown" data-module-container-class="lang-container">
     {% for locale in h.get_available_locales() %}
-      <option value="{% url_for current_url, locale=locale %}" {% if locale == current_lang %}selected="selected"{% endif %}>
+      <option value="{% url_for h.current_url(), locale=locale %}" {% if locale == current_lang %}selected="selected"{% endif %}>
         {{ locale.display_name or locale.english_name }}
       </option>
     {% endfor %}