Add a custom text to explain usage of vouchers

src/pretix/base/settings.py

@@ -523,6 +523,10 @@ Your {event} team"""))
         'default': '',
         'type': LazyI18nString
     },
+    'voucher_explanation_text': {
+        'default': '',
+        'type': LazyI18nString
+    },
     'organizer_info_text': {
         'default': '',
         'type': LazyI18nString

src/pretix/control/forms/event.py

@@ -981,6 +981,14 @@ class DisplaySettingsForm(SettingsForm):
         required=False,
         widget=I18nTextarea
     )
+    voucher_explanation_text = I18nFormField(
+        label=_("Voucher explanation"),
+        required=False,
+        widget=I18nTextarea,
+        widget_kwargs={'attrs': {'rows': '2'}},
+        help_text=_("This text will be shown next to the input for a voucher code. You can use it e.g. to explain "
+                    "how to obtain a voucher code.")
+    )
     show_variations_expanded = forms.BooleanField(
         label=_("Show variations of a product expanded by default"),
         required=False

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

@@ -11,6 +11,7 @@
             <legend>{% trans "Event page" %}</legend>
             {% bootstrap_field form.logo_image layout="control" %}
             {% bootstrap_field form.frontpage_text layout="control" %}
+            {% bootstrap_field form.voucher_explanation_text layout="control" %}
             {% bootstrap_field form.show_variations_expanded layout="control" %}
             {% bootstrap_field form.meta_noindex layout="control" %}
             {% if form.frontpage_subevent_ordering %}

src/pretix/presale/templates/pretixpresale/event/index.html

@@ -458,6 +458,11 @@
     {% if show_vouchers %}
         <section class="front-page">
             <h3>{% trans "Redeem a voucher" %}</h3>
+            {% if event.settings.voucher_explanation_text %}
+                <div>
+                    {{ event.settings.voucher_explanation_text|rich_text }}
+                </div>
+            {% endif %}
             <form method="get" action="{% eventurl event "presale:event.redeem" cart_namespace=cart_namespace %}">
                 <div class="row-voucher">
                     <div class="col-md-8 col-sm-6 col-xs-12">