Time machine mode [Z#23129725] (#3961)

Allows organizers to test their shop as if it were a different date and time.

Implemented using a time_machine_now() function which is used instead of regular now(), which can overlay the real date time with a value from a ContextVar, assigned from a session value in EventMiddleware.

For more information, see doc/development/implementation/timemachine.rst

---------

Co-authored-by: Richard Schreiber <schreiber@rami.io>
Co-authored-by: Raphael Michel <michel@rami.io>

src/pretix/control/context.py

@@ -46,11 +46,11 @@ from pretix.base.settings import GlobalSettingsObject
 from pretix.control.navigation import (
     get_event_navigation, get_global_navigation, get_organizer_navigation,
 )
-
-from ..helpers.i18n import (
+from pretix.helpers.i18n import (
     get_javascript_format, get_javascript_output_format, get_moment_locale,
 )
-from ..multidomain.urlreverse import get_event_domain
+from pretix.multidomain.urlreverse import get_event_domain
+
 from .signals import html_head, nav_topbar
 
 SessionStore = import_module(settings.SESSION_ENGINE).SessionStore
@@ -106,7 +106,7 @@ def _default_context(request):
         else:
             ctx['complain_testmode_orders'] = False
 
-        if not request.event.live and ctx['has_domain']:
+        if (request.event.testmode or not request.event.live) and ctx['has_domain']:
             child_sess = request.session.get('child_session_{}'.format(request.event.pk))
             s = SessionStore()
             if not child_sess or not s.exists(child_sess):
@@ -114,10 +114,8 @@ def _default_context(request):
                 s.create()
                 ctx['new_session'] = s.session_key
                 request.session['child_session_{}'.format(request.event.pk)] = s.session_key
-                request.session['event_access'] = True
             else:
                 ctx['new_session'] = child_sess
-                request.session['event_access'] = True
 
         if request.GET.get('subevent', ''):
             # Do not use .get() for lazy evaluation

src/pretix/control/templates/pretixcontrol/event/live.html

@@ -46,7 +46,7 @@
                             {% endfor %}
                         </ul>
                     </div>
-                    <div class="test-right">
+                    <div class="text-right">
                         <button type="submit" class="btn btn-primary btn-lg btn-save" disabled>
                             {% trans "Go live" %}
                         </button>
@@ -82,10 +82,10 @@
                     <p>
                         {% trans "Your shop is currently in test mode. All orders are not persistent and can be deleted at any point." %}
                     </p>
-                    <div class="form-inline">
-                        <label class="checkbox">
+                    <div class="checkbox">
+                        <label>
                             <input type="checkbox" name="delete" value="yes" />
-                            {% trans "Permanently delete all orders created in test mode" %}
+                            <b>{% trans "Permanently delete all orders created in test mode" %}</b>
                         </label>
                     </div>
                     <div class="text-right">

src/pretix/control/templates/pretixcontrol/event/transfer_session.html

@@ -0,0 +1,9 @@
+{% load eventurl %}
+{% load static %}
+<form action="{% eventurl request.event "presale:event.auth" %}{% if request.GET.next %}?next={{ request.GET.next }}{% endif %}" method="post">
+    <input type="hidden" value="{{ new_session }}" name="session">
+    <button type="submit">
+        Continue
+    </button>
+</form>
+<script src="{% static "pretixcontrol/js/send_form.js" %}"></script>

src/pretix/control/urls.py

@@ -247,6 +247,7 @@ urlpatterns = [
         re_path(r'^widgets.json$', dashboards.event_index_widgets_lazy, name='event.index.widgets'),
         re_path(r'^logs/embed$', dashboards.event_index_log_lazy, name='event.index.logs'),
         re_path(r'^live/$', event.EventLive.as_view(), name='event.live'),
+        re_path(r'^transfer_session/$', event.EventTransferSession.as_view(), name='event.transfer_session'),
         re_path(r'^logs/$', event.EventLog.as_view(), name='event.log'),
         re_path(r'^delete/$', event.EventDelete.as_view(), name='event.delete'),
         re_path(r'^comment/$', event.EventComment.as_view(),

src/pretix/control/views/event.py

@@ -1017,6 +1017,11 @@ class EventLive(EventPermissionRequiredMixin, TemplateView):
         })
 
 
+class EventTransferSession(EventPermissionRequiredMixin, TemplateView):
+    permission = 'can_change_event_settings'
+    template_name = 'pretixcontrol/event/transfer_session.html'
+
+
 class EventDelete(RecentAuthenticationRequiredMixin, EventPermissionRequiredMixin, FormView):
     permission = 'can_change_event_settings'
     template_name = 'pretixcontrol/event/delete.html'