Make sure we actually edit the selected items

src/pretix/control/templates/pretixcontrol/vouchers/bulk_edit.html

@@ -15,6 +15,11 @@
     </h1>
     <form action="" method="post" class="form-horizontal">
         {% csrf_token %}
+        <div class="hidden">
+            {% for v in vouchers %}
+                <input type="hidden" name="voucher" value="{{ v.pk }}">
+            {% endfor %}
+        </div>
         {% bootstrap_form_errors form %}
             <fieldset>
                 <legend>{% trans "Voucher details" %}</legend>

src/pretix/control/templates/pretixcontrol/vouchers/index.html

@@ -99,6 +99,9 @@
         </p>
         <form action="{% url "control:event.vouchers.bulkaction"  organizer=request.event.organizer.slug event=request.event.slug %}" method="post">
             {% csrf_token %}
+            {% for field in filter_form %}
+                {{ field.as_hidden }}
+            {% endfor %}
             <div class="table-responsive">
                 <table class="table table-hover table-quotas">
                     <thead>