fix: test if status.index route exists

ckanext/nhm/lib/helpers.py

@@ -19,6 +19,7 @@
 from beaker.cache import cache_region
 from jinja2.filters import do_truncate
 from lxml import etree, html
+from werkzeug.routing import BuildError
 
 from ckan import model
 from ckan.lib import helpers as core_helpers
@@ -1627,3 +1628,17 @@ def get_status_indicator():
  amber_status = [r for r in status_reports if r['state'] == 'ok']
  if len(amber_status) > 0:
  return 'amber'
+
+
+def route_exists(route):
+ """
+ Simple helper for checking if a flask route exists.
+
+ :param route: endpoint name, as passed to url_for
+ :return: bool
+ """
+ try:
+ url = toolkit.url_for(route)
+ return True
+ except BuildError:
+ return False

ckanext/nhm/theme/templates/header.html

@@ -9,6 +9,7 @@
 
 {% set status_indicator = h.get_status_indicator() %}
 {% macro status_icon() %}
+{% if h.route_exists('status.index') %}
 <div>
  <a href="{{ h.url_for('status.index') }}"
  title="{{ _('System status') }}">
@@ -22,6 +23,7 @@
  <i class="fas fa-heartbeat fa-lg"></i>
  </a>
 </div>
+{% endif %}
 {% endmacro %}