diff --git a/doc/development/api/general.rst b/doc/development/api/general.rst
index 4a9b9d1d52..31a2a260a0 100644
--- a/doc/development/api/general.rst
+++ b/doc/development/api/general.rst
@@ -25,7 +25,7 @@ Frontend
--------
.. automodule:: pretix.presale.signals
- :members: html_head, footer_links, front_page_top, front_page_bottom
+ :members: html_head, footer_links, front_page_top, front_page_bottom, checkout_confirm_messages
.. automodule:: pretix.presale.signals
diff --git a/src/pretix/presale/checkoutflow.py b/src/pretix/presale/checkoutflow.py
index 50cc341715..c8f44195b9 100644
--- a/src/pretix/presale/checkoutflow.py
+++ b/src/pretix/presale/checkoutflow.py
@@ -2,7 +2,7 @@ from django.conf import settings
from django.contrib import messages
from django.core.exceptions import ValidationError
from django.core.validators import EmailValidator
-from django.http import HttpResponseNotAllowed
+from django.http import HttpResponseNotAllowed, JsonResponse
from django.shortcuts import redirect
from django.utils import translation
from django.utils.functional import cached_property
@@ -15,7 +15,9 @@ from pretix.base.services.orders import perform_order
from pretix.base.signals import register_payment_providers
from pretix.multidomain.urlreverse import eventreverse
from pretix.presale.forms.checkout import ContactForm, InvoiceAddressForm
-from pretix.presale.signals import checkout_flow_steps, order_meta_from_request
+from pretix.presale.signals import (
+ checkout_confirm_messages, checkout_flow_steps, order_meta_from_request,
+)
from pretix.presale.views import CartMixin, get_cart_total
from pretix.presale.views.async import AsyncAction
from pretix.presale.views.questions import QuestionsViewMixin
@@ -307,8 +309,17 @@ class ConfirmStep(CartMixin, AsyncAction, TemplateFlowStep):
ctx['payment'] = self.payment_provider.checkout_confirm_render(self.request)
ctx['payment_provider'] = self.payment_provider
ctx['addr'] = self.invoice_address
+ ctx['confirm_messages'] = self.confirm_messages
return ctx
+ @cached_property
+ def confirm_messages(self):
+ msgs = {}
+ responses = checkout_confirm_messages.send(self.request.event)
+ for receiver, response in responses:
+ msgs.update(response)
+ return msgs
+
@cached_property
def payment_provider(self):
responses = register_payment_providers.send(self.request.event)
@@ -335,6 +346,20 @@ class ConfirmStep(CartMixin, AsyncAction, TemplateFlowStep):
def post(self, request):
self.request = request
+
+ if self.confirm_messages:
+ for key, msg in self.confirm_messages.items():
+ if request.POST.get('confirm_{}'.format(key)) != 'yes':
+ msg = str(_('You need to check all checkboxes on the bottom of the page.'))
+ messages.error(self.request, msg)
+ if "ajax" in self.request.POST or "ajax" in self.request.GET:
+ return JsonResponse({
+ 'ready': True,
+ 'redirect': self.get_error_url(),
+ 'message': msg
+ })
+ return redirect(self.get_error_url())
+
meta_info = {}
for receiver, response in order_meta_from_request.send(sender=request.event, request=request):
meta_info.update(response)
diff --git a/src/pretix/presale/signals.py b/src/pretix/presale/signals.py
index 03647faffb..1ecd495655 100644
--- a/src/pretix/presale/signals.py
+++ b/src/pretix/presale/signals.py
@@ -21,6 +21,16 @@ are expected to return a dictionary containing the keys ``label`` and ``url``.
As with all plugin signals, the ``sender`` keyword argument will contain the event.
"""
+checkout_confirm_messages = EventPluginSignal()
+"""
+This signal is sent out to retrieve short messages that need to be acknowledged by the user before the
+order can be completed. This is typically used for something like "accept the terms and conditions".
+Receivers are expected to return a dictionary where the keys are globally unique identifiers for the
+message and the values can be arbitrary HTML.
+
+As with all plugin signals, the ``sender`` keyword argument will contain the event.
+"""
+
checkout_flow_steps = EventPluginSignal()
"""
This signal is sent out to retrieve pages for the checkout flow
diff --git a/src/pretix/presale/templates/pretixpresale/event/checkout_confirm.html b/src/pretix/presale/templates/pretixpresale/event/checkout_confirm.html
index f235288cc4..8740245242 100644
--- a/src/pretix/presale/templates/pretixpresale/event/checkout_confirm.html
+++ b/src/pretix/presale/templates/pretixpresale/event/checkout_confirm.html
@@ -115,6 +115,25 @@
+ {% if confirm_messages %}
+