完善功能

app/admin/controller/life/FarmLandController.php

@@ -30,6 +30,8 @@ class FarmLandController extends Curd
     {
         [$where, $format, $limit, $field, $order] = $this->selectInput($request);
         $where['land_is_del'] = 0;
+        $order = $request->get('order', 'desc');
+        $field = $field ?? 'land_add_time';
         $query = $this->doSelect($where, $field, $order);
         return $this->doFormat($query, $format, $limit);
     }