add data field edit link

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

@@ -26,6 +26,9 @@
     {{ request.event.settings.locales|json_script:"event_locales" }}
     {{ questionnaire_type_choices|json_script:"questionnaire_type_choices" }}
 
+    {% url "control:event.items.questions.edit" organizer=request.event.organizer.slug event=request.event.slug question=0 as datafield_edit_url %}
+    {{ datafield_edit_url|json_script:"datafield_edit_url" }}
+
     <div id="questionnaires-editor">
         <!-- Vue app mount point -->
     </div>

src/pretix/static/pretixcontrol/js/ui/questionnaires/QuestionElement.vue

@@ -4,6 +4,7 @@ import NativeDialog from './NativeDialog.vue';
 import I18nTextField from './I18nTextField.vue';
 import { useId, ref } from 'vue'
 import { DragHandle } from 'vue-slicksort';
+import {get_datafield_edit_url} from "./api";
 
 const id = useId();
 const props = defineProps(['question', 'datafields', 'editable'])
@@ -86,8 +87,13 @@ const editor = ref();
           </label>
           <div class="col-md-9">
             <p class="form-control-static">
-							{{ question.question }}
-							<a href="" target="_blank">Manage data field details</a>
+							<template v-if="typeof question.question === 'number'">
+								{{ df.internal_name }}
+								<a :href="get_datafield_edit_url(df.id)" target="_blank">Manage data field details</a>
+							</template>
+							<template v-else>
+								{{ question.question }}
+							</template>
 						</p>
           </div>
         </div>

src/pretix/static/pretixcontrol/js/ui/questionnaires/api.ts

@@ -57,3 +57,7 @@ function get_json_script_value(id) {
 export function get_event_locales() {
 	return get_json_script_value('event_locales');
 }
+
+export function get_datafield_edit_url(datafield_id) {
+	return get_json_script_value('datafield_edit_url').replace('/0/', `/${datafield_id}/`);
+}