allow event trip_type update

src/tera/admin/event.rs

@@ -49,6 +49,7 @@ struct UpdateEventForm<'r> {
     notes: Option<&'r str>,
     always_show: bool,
     is_locked: bool,
+    trip_type: Option<i64>,
 }
 
 #[put("/planned-event", data = "<data>")]
@@ -64,6 +65,7 @@ async fn update(
         notes: data.notes,
         always_show: data.always_show,
         is_locked: data.is_locked,
+        trip_type_id: data.trip_type,
     };
     match Event::find_by_id(db, data.id).await {
         Some(planned_event) => {