数组去重

@@ -682,6 +682,8 @@ class TableManagerModelOrReserve with ChangeNotifier {
     rdate = start + '-' + end;
 
     String tableSelectInfo = '';
+   
+   selectTablesOrReserve = selectTablesOrReserve.toSet().toList();
     for (TableListReserve item in selectTablesOrReserve) {
       // if (item.selected) {
       tableSelectInfo += ',${item.id}';