Provide page offset

src/pretix/control/templates/pretixcontrol/items/questions.html

@@ -39,7 +39,10 @@
                     <th class="action-col-2"></th>
                 </tr>
                 </thead>
-                <tbody data-dnd-url="{% url "control:event.items.questions.reorder" organizer=request.event.organizer.slug event=request.event.slug %}">
+                <tbody data-dnd-url="{% url "control:event.items.questions.reorder" organizer=request.event.organizer.slug event=request.event.slug %}"
+                       {% if is_paginated %}
+                       data-dnd-offset="{{ page_obj.start_index }}"
+                       {% endif %}>
                 {% for q in questions %}
                     <tr data-dnd-id="{{q.id}}">
                         <td><strong><a href="

src/pretix/static/pretixcontrol/js/ui/dragndroplist.js

@@ -3,6 +3,7 @@ $(function () {
     $("[data-dnd-url]").each(function(){
         var container = $(this),
             url = container.data("dnd-url"),
+            offset = container.data("dnd-offset"),
             up = container.find("a:has(.fa-arrow-up)"),
             handle = $('<span class="btn btn-default btn-sm dnd-sort-handle"><i class="fa fa-arrows"></i></span>');
 
@@ -33,7 +34,8 @@ $(function () {
                         'url': url,
                         'headers': {'X-CSRFToken': $("input[name=csrfmiddlewaretoken]").val()},
                         'data': JSON.stringify({
-                            ids: ids
+                            ids: ids,
+                            offset: offset
                         }),
                         'contentType': "application/json",
                         'timeout': 30000