Add warning to backend if cronjob is not running (#4550)

src/pretix/base/management/commands/runperiodic.py

@@ -36,6 +36,7 @@ import time
 import traceback
 
 from django.conf import settings
+from django.core.cache import cache
 from django.core.management.base import BaseCommand
 from django.dispatch.dispatcher import NO_RECEIVERS
 
@@ -57,6 +58,8 @@ class Command(BaseCommand):
     def handle(self, *args, **options):
         verbosity = int(options['verbosity'])
 
+        cache.set("pretix_runperiodic_executed", True, 3600 * 12)
+
         if not periodic_task.receivers or periodic_task.sender_receivers_cache.get(self) is NO_RECEIVERS:
             return
 

src/pretix/control/context.py

@@ -36,6 +36,7 @@ import sys
 from importlib import import_module
 
 from django.conf import settings
+from django.core.cache import cache
 from django.db.models import Q
 from django.urls import Resolver404, get_script_prefix, resolve
 from django.utils.translation import get_language
@@ -152,6 +153,8 @@ def _default_context(request):
             ctx['warning_update_available'] = True
         if not gs.settings.update_check_ack and 'runserver' not in sys.argv:
             ctx['warning_update_check_active'] = True
+        if not cache.get('pretix_runperiodic_executed') and not settings.DEBUG:
+            ctx['warning_cronjob'] = True
 
     ctx['ie_deprecation_warning'] = 'MSIE' in request.headers.get('User-Agent', '') or 'Trident/' in request.headers.get('User-Agent', '')
 

src/pretix/control/templates/pretixcontrol/base.html

@@ -421,6 +421,14 @@
                             </a>
                         </div>
                     {% endif %}
+                    {% if warning_cronjob %}
+                        <div class="alert alert-warning">
+                            {% blocktrans trimmed %}
+                                The cronjob component of pretix was not executed in the last hours. Please check that
+                                you have completed all installation steps and your cronjob is executed correctly.
+                            {% endblocktrans %}
+                        </div>
+                    {% endif %}
 
                     {% if debug_warning %}
                         <div class="alert alert-danger">